<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   FORM 10-Q


[X]    QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
       EXCHANGE ACT OF 1934

For the quarterly period ended December 31, 1995

                                      OR

[_]    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
       EXCHANGE ACT OF 1934

For the transition period from _____________ to ______________  

Commission file number 1-5560
                       ------

                            Alpha Industries, Inc.
            (Exact name of registrant as specified in its charter)

           Delaware                                          04-2302115
(State or other jurisdiction of                           (I.R.S. Employer
 incorporation or organization)                          Identification No.)

 20 Sylvan Road, Woburn, Massachusetts                         01801
(Address of principal executive offices)                     (Zip Code)

Registrant's telephone number, including area code:        (617) 935-5150

     Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.

        Yes      X             No   
               -----                 -----

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.

             Class                               Outstanding at January 28, 1996
Common Stock, par value $.25 per share                        9,671,771

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

                               Table of Contents

- --------------------------------------------------------------------------------


                                                                          Page


Part 1   Financial Information


  Item 1 - Financial Statements

    Consolidated Balance Sheets - December 31, 1995 and April 2, 1995....   3

    Consolidated Statements of Income - Quarters and Nine Months Ended
    December 31, 1995 and January 1, 1995................................   4

    Consolidated Statements of Cash Flows -  Nine Months Ended 
    December 31, 1995 and January 1, 1995................................   5

    Notes to Consolidated Financial Statements...........................   6


  Item 2 - Management's Discussion and Analysis of Financial Condition
    and Results of Operations............................................   7

Part 2   Other Information


  Item 1 - Legal Proceedings.............................................   9


  Item 6 - Exhibits and Reports on Form 8-K..............................   9

- --------------------------------------------------------------------------------

Statement of Fair Presentation

The financial information included herein is unaudited. In addition, the
financial information does not include all disclosures required under generally
accepted accounting principles because certain note information included in the
Company's annual report to shareholders has been omitted and such information
should be read in conjunction with the prior year's annual report. However, the
financial information reflects all adjustments (consisting solely of normal
recurring adjustments) which are, in the opinion of management, necessary to a
fair statement of the results for the interim periods. The Company considers the
disclosures adequate to make the information presented not misleading.

                                       2

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

Consolidated Balance Sheets
(In thousands except share and per share amounts)


<TABLE>
<CAPTION>
                                                                                  Dec. 31,       April 2,
                                                                                   1995           1995
                                                                                (unaudited)     (audited)
- --------------------------------------------------------------------------------------------------------
<S>                                                                             <C>             <C>
Assets
  Current assets
    Cash and cash equivalents at cost (approximates market)..................     $21,247        $ 3,510
    Accounts receivable......................................................      16,522         13,548
    Inventories (Note 1).....................................................      11,834          9,370
    Prepayments and other current assets.....................................         816            756
                                                                                  -------        -------
       Total current assets..................................................      50,419         27,184
                                                                                  -------        -------
  Property, plant and equipment, less accumulated depreciation and
   amortization of $56,768 and $53,283.......................................      23,911         20,489
  Other assets...............................................................         692            594
  Property held for resale...................................................           -          1,900
                                                                                  -------        -------
                                                                                  $75,022        $50,167
                                                                                  =======        =======
Liabilities And Stockholders' Equity
  Current liabilities
    Notes payable, bank......................................................     $     -        $ 3,000

    Current maturities of long-term debt.....................................         268            339
    Current maturities of capital lease obligations..........................         404            370
    Accounts payable.........................................................       5,681          5,206
    Payroll, commissions and related expenses................................       5,304          4,777
    Repositioning reserve....................................................         238            991
    Other accrued liabilities................................................       1,700          1,518
                                                                                  -------        -------
       Total current liabilities.............................................      13,595         16,201
                                                                                  -------        -------
  Long-term debt.............................................................       2,709          4,744
                                                                                  -------        -------
  Long-term capital lease obligations........................................         710            754
                                                                                  -------        -------
  Other long-term liabilities................................................         933            794
                                                                                  -------        -------
  Commitments and contingencies (Note 4)
  Stockholders' equity
    Common stock par value $.25 per share: authorized
     30,000,000 shares; issued 9,908,575 and 7,994,495 shares (Note 2).......       2,477          1,999
    Additional paid-in capital  (Note 2).....................................      53,195         27,921
    Retained earnings (deficit)..............................................       1,894         (1,738)
    Less - Treasury shares 246,053 and 262,886 shares at cost................         311            330
           Unearned compensation-restricted stock............................         180            178
                                                                                  -------        -------
       Total stockholders' equity............................................      57,075         27,674
                                                                                  -------        -------
                                                                                  $75,022        $50,167
                                                                                  =======        =======
- --------------------------------------------------------------------------------------------------------
</TABLE>


The accompanying notes are an integral part of these financial statements.

                                       3

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

Consolidated Statements of Income
(Unaudited)
(In thousands except per share data)


<TABLE>
<CAPTION>
                                             Third Quarter Ended           Nine Months Ended
                                           Dec. 31,        Jan. 1,       Dec. 31,       Jan. 1,
                                             1995           1995           1995           1995
- -----------------------------------------------------------------------------------------------
<S>                                        <C>            <C>            <C>            <C>
  Net sales..............................  $25,237        $19,359        $71,404        $56,287
    Cost of sales........................   16,684         13,494         47,572         39,407
    Research and development expenses....    2,366            924          6,281          2,722
    Selling and administrative expenses..    4,384          3,917         13,121         11,254
    Repositioning credit.................        -              -           (320)             -
                                           -------        -------        -------        -------
  Operating income.......................    1,803          1,024          4,750          2,904
  Interest expense.......................     (211)          (170)          (652)          (555)
  Interest income and other, net.........       98            (15)           175             46
                                           -------        -------        -------        -------
  Income before income taxes.............    1,690            839          4,273          2,395
  Provision for income taxes.............      253             65            641            359
                                           -------        -------        -------        -------
  Net income.............................  $ 1,437        $   774        $ 3,632        $ 2,036
                                           =======        =======        =======        =======
  Net income per share...................  $  0.16        $  0.10        $  0.43        $  0.26
                                           =======        =======        =======        =======
  Weighted average common shares and
   common share equivalents (Note 3).....    8,870          7,815          8,391          7,754
                                           =======        =======        =======        =======
- -----------------------------------------------------------------------------------------------
</TABLE>


The accompanying notes are an integral part of these financial statements.

                                       4

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

Consolidated Statements Of Cash Flows
(Unaudited)
(In thousands)


<TABLE>
<CAPTION>
                                                                            Nine Months Ended
                                                                           Dec. 31,     Jan. 1,
                                                                            1995          1995
- -----------------------------------------------------------------------------------------------
<S>                                                                       <C>           <C>
  Cash flows from operating activities:
    Net income.........................................................   $ 3,632       $ 2,036
    Adjustments to reconcile net income to net cash provided from
     (used for) operations:
      Depreciation and amortization of property, plant and equipment...     3,485         3,390
      Contribution of treasury shares to Savings and Retirement Plan...       220             -
      Amortization of unearned compensation - restricted stock, net....        45            32
      Repositioning credit.............................................      (320)            -
      Increase in other liabilities and long-term benefits.............       139           314
      Increase in other assets.........................................      (349)         (491)
      Change in assets and liabilities:
        Accounts receivable............................................    (2,974)          (41)
        Inventories....................................................    (2,464)       (1,693)
        Other current assets...........................................       (60)           97
        Accounts payable...............................................       475          (284)
        Other accrued liabilities and expenses.........................       709          (133)
        Repositioning reserve..........................................      (753)         (730)
                                                                          -------       -------
          Net cash provided from operations............................     1,785         2,497
                                                                          -------       -------
  Cash flows from investing activities:
    Proceeds from sale of building.....................................     2,465             -
    Additions to property, plant and equipment.........................    (6,592)       (3,407)
                                                                          -------       -------
          Net cash used in investing activities........................    (4,127)       (3,407)
                                                                          -------       -------
  Cash flows from (used in) financing activities:
    Proceeds from sale of common stock.................................    25,286             -
    Proceeds from debt.................................................       624         2,016
    Repayment of debt..................................................    (5,730)         (246)
    Deferred charges related to long-term debt.........................         6           (18)
    Payments on capital lease obligations..............................      (325)         (265)
    Proceeds from sale of stock under stock purchase plan..............        64            42
    Exercise of stock options..........................................       154           330
                                                                          -------       -------
          Net cash from financing activities...........................    20,079         1,859
                                                                          -------       -------
  Net increase in cash and cash equivalents............................    17,737           949
  Cash and cash equivalents, beginning of period.......................     3,510         1,691
                                                                          -------       -------
  Cash and cash equivalents, end of period.............................   $21,247       $ 2,640
                                                                          =======       =======
- -----------------------------------------------------------------------------------------------
</TABLE>


Supplemental Disclosures:

Capital lease obligations of $315 thousand were incurred during the nine months 
ended December 31, 1995 when the Company entered into leases for new equipment.

The accompanying notes are an integral part of these financial statements.

                                       5

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

Notes To Consolidated Financial Statements
(unaudited)


Note 1   Inventories


<TABLE> 
<CAPTION> 
                                                          Dec. 31,    April 2,
  Inventories consist of the following (in thousands):      1995        1995
- --------------------------------------------------------------------------------
<S>                                                       <C>         <C> 
    Raw materials ....................................    $ 4,579     $ 3,186
    Work-in-process ..................................      5,541       4,950
    Finished goods ...................................      1,714       1,234
                                                          -------     -------
                                                          $11,834     $ 9,370
                                                          =======     =======
- --------------------------------------------------------------------------------
</TABLE>
 

Note 2   Common Stock

During the quarter the Company successfully completed a secondary stock
offering, which raised $25.3 million net of expenses, on the sale of 1,840,000
shares of common stock.

Note 3   Earnings Per Share

Earnings per common share for the nine months ended December 31, 1995 and
January 1, 1995 were computed using the weighted average number of common shares
and common equivalent shares outstanding during the periods of 8,390,910 and
7,754,486 shares, respectively.

Note 4   Commitments and Contingencies

The Company is party to suits and claims arising in the normal course of
business. Management believes these are adequately provided for or will result
in no significant additional liability to the Company.

                                       6

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

 
                               PART I - ITEM 2


Management's Discussion And Analysis of Financial Condition And Results Of 
Operations

Results of Operations

Sales for the nine months ended December 31, 1995 were $71.4 million, an
increase of 27% compared with $56.3 million for the comparable period last year.
Sales for the third quarter of fiscal 1996 totaled $25.2 million, an increase of
30% compared with sales of $19.4 million for the same period last year. The year
and quarter-to-date sales increases were attributable to increased shipments for
wireless communications products, particularly ceramic components, Gallium
Arsenide Monolithic Integrated Circuits (GaAs MMICs) and discrete
semiconductors.

New orders received for the third quarter of fiscal 1996 were $26.6 million, an
increase of 26% compared with $21.1 million for the comparable period last year.
Year-to-date orders totaled $79.1 million, an increase of 30% compared with
$60.7 million for the same period last year, with demand particularly strong in
the ceramic components, GaAs MMICs and discrete semiconductor product areas.

Gross profit for the first nine months of fiscal 1996 increased 41% to $23.8
million or 33.4% of sales as compared to $16.9 million or 30% of sales, for the
comparable period in fiscal 1995. Gross profit for the third quarter of fiscal
1996 increased 45.8% to $8.6 million or 33.9% of sales as compared to $5.9
million or 30.3% of sales, for the comparable period last year. The improvement
in gross profit is due mainly to higher capacity utilization at the Company's
Woburn, Massachusetts manufacturing facility.

While sales and profits have achieved substantial growth, there are indications
that this rate of growth may be slowed over the next one or two quarters. The
Company's ceramics operation continues to experience demand that outpaces its
ability to add capacity, due to equipment lead times and facility constraints.
However, the Company continues to invest heavily in capital equipment and people
and is moving ahead with a new 60,000 square foot manufacturing facility.

The Company's ability to improve operating margins by leveraging Gallium
Arsenide capacity is highly dependent on securing volume production design wins
and on the overall subscriber market demand. The Company's new GaAs MMIC designs
and prototypes are being well received by the Company's targeted customers, as
evidenced by year-to-date sales to the top four wireless original equipment
manufacturers (OEMs) and their suppliers having increased by approximately 75%
over last year, but the timing of the production ramp will not substantially
increase until early fiscal year 1997.

Research and development expenses increased 130.8% to $6.3 million, or 8.8% of
sales for the first nine months of fiscal 1996 as compared to $2.7 million or
4.8% of sales for the comparable period last year. For the third quarter ended
December 31, 1995, research and development expenses increased 156.1% to $2.4
million or 9.4% of sales as compared to $924 thousand or 4.8% of sales for the
comparable quarter last year. These increases in research and development are
due to continued investment by the Company in the ceramic and GaAs MMIC product
lines. The Company will continue to invest in product and process development in
order to address the demands of its targeted wireless markets.

Selling and administrative expenses increased 16.6% to $13.1 million or 18.4% of
sales for the first nine months of fiscal 1996, as compared to $11.3 million or
20.0% of sales for the comparable period last year. For the third quarter of
fiscal 1996 selling and administrative expenses increased 11.9% to $4.4 million
or 17.4% of sales as compared to $3.9 million or 20.2% of sales for the third
quarter last year. Selling and administrative expenses increased primarily as a
result of training and other costs related to the early phases of implementation
of a new 

                                       7

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

manufacturing and management information system, as well as increased
commissions related to higher sales volume.

The Company recorded a $320 thousand repositioning credit during the first
quarter of fiscal 1996, which resulted from the reversal of certain accruals for
estimated carrying costs as a result of an earlier than expected disposition of
the Methuen, Massachusetts facility.

Interest expense increased $97 thousand for the first nine months of fiscal 1996
and $41 thousand for the third quarter due to the Company's increased short-term
borrowings. These short-term borrowings were repaid in the third quarter after
the Company successfully completed a secondary public offering which raised
$25.3 million, net of expenses, on the sale of 1,840,000 shares of common stock.
The proceeds are being used to fund further capital expansion and to retire
certain bank debt.

The Company's effective tax rate for the first nine months of fiscal 1996 was
15.0% compared to the current combined federal, state and foreign rate of
approximately 40%. This rate differed from statutory rates primarily as a result
of the utilization of net operating loss carryforwards. At December 31, 1995,
the Company had available net operating loss carryforwards of approximately $23
million which expire commencing in 2004.

Year-to-date net income at December 31, 1995, totaled $3.6 million or $0.43 per
share compared with $2.0 million or $0.26 per share, a 78% increase over the
same period last year. Net income for the third quarter was $1.4 million or
$0.16 per share compared with $774 thousand or $0.10 per share, a 86% increase
compared with the comparable quarter. Per share data reflects the stock offering
completed in the third quarter.

Financial Condition

At December 31, 1995, working capital totaled $36.8 million and included $21.2
million in cash and cash equivalents, compared with $11 million at the end of
fiscal 1995. Cash and cash equivalents increased $17.7 million during the first
nine months of fiscal 1996 largely as a result of funds received from the
Company's secondary public offering.

During the first nine months of fiscal 1996, the Company recorded $6.6 million
of capital expenditures primarily for the expansion of its ceramic manufacturing
facilities, further automation of its semiconductor wafer fab operations, and
various information technology equipment. The Company plans capital expansion of
approximately $9 million over the next nine to twelve months in order to service
the increasing requirements for its products in the wireless markets. In
addition to the proceeds from the offering, the Company also has two lines of
credit available for a total of $12.5 million of which $1.0 million has been
borrowed under a long-term equipment line of credit.

In July, 1995, the Company sold its Methuen, Massachusetts plant and received
net proceeds of $2.5 million. In connection with the sale, using the net
proceeds and $1 million borrowed under its line of credit, the Company retired
$3.5 million of related debt.

During the quarter, the Company successfully completed a surveillance audit to
renew its ISO 9001 certification of its Woburn, Massachusetts facility.

With the funds raised from the secondary offering and the lines of credit
available the Company believes it has adequate funds to support its current
operating needs. However, the Company will continue to evaluate other available
financing such as low interest financing for the capital expansion of its
ceramic manufacturing business and any other sources that may become available.

                                       8

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries


 
                         PART II - OTHER INFORMATION


Item 1   Legal Proceedings

The Company does not have any material pending legal proceedings other than
routine litigation incidental to its business.

The Company has been notified by federal and state environmental agencies of its
potential liability with respect to the following two sites: the Spectron, Inc.
Superfund site in Elkton, Maryland; and the Seaboard Chemical Corporation site
in Jamestown, North Carolina. In each case several hundred other companies have
also been notified about their potential liability regarding these sites. The
Company continues to deny that it has any responsibility with respect to these
sites other than as a de minimis party. Management is of the opinion that the
                      -- -------
outcome of the aforementioned environmental matters will not have a material
effect on the Company's operations.


Item 6   Exhibits And Reports On Form 8-K

   (a)  Exhibits

        (3)  Certificate of Incorporation and By-laws.

             (a)  Restated Certificate of Incorporation (Filed as Exhibit 3 (a)
                  to Registration Statement on Form S-3 (Registration No. 33-
                  63857))*.

             (b)  Amended and restated By-laws of the Corporation dated April
                  30, 1992 (Filed as Exhibit 3(b) to the Annual Report on Form
                  10-K for the year ended March 29, 1992)*.

        (4)  Instruments defining rights of security holders, including
             indentures.

             (a)  Specimen Certificate of Common Stock (Filed as Exhibit 4(a) to
                  Registration Statement on Form S-3 (Registration No. 33-
                  63857))*.

             (b)  Frederick County Industrial Development Revenue Bond, Deed of
                  Trust, Loan Agreement and Guaranty and Indemnification
                  Agreement dated June 17, 1982 (Filed as Exhibit 4(g) to the
                  Registration Statement on Form S-8 filed July 29, 1982)*. Bond
                  and Loan Document Modification Agreement dated December 9,
                  1993 (Filed as Exhibit 4(c) to the Quarterly Report on Form 
                  10-Q for the quarter ended December 26, 1993)*.

             (c)  Amended and Restated Rights Agreement dated as of November 24,
                  1986, as amended and restated July 3, 1990 and as further
                  amended September 9, 1990 and September 24, 1990, between
                  Registrant and The First National Bank of Boston, as Rights
                  Agent (The July 3, 1990 restatement and the September 9, 1990
                  and September 24, 1990 amendments were filed as Exhibit 4 to
                  the Current Report on Form 8-K dated July 3, 1990 and Exhibits
                  4(a) and 4(b) to the Current Report on Form 8-K dated
                  September 18, 1990, respectively)*.

             (d)  Loan and Security Agreement dated December 15, 1993 between
                  Trans-Tech, Inc., and County Commissioners of Frederick County
                  (Filed as Exhibit 4(h) to the Quarterly Report on Form 10-Q
                  for the quarter ended July 3, 1994)*.

             (e)  Stock Purchase Warrant for 50,000 shares of the Registrant's
                  Common Stock issued to Silicon Valley Bank as of April 1, 1994
                  (Filed as Exhibit 4(i) to the Quarterly Report on Form 10-Q
                  for the quarter ended July 3, 1994)*.

             (f)  Credit Agreement dated September 29, 1995 between Alpha
                  Industries, Inc, and Trans-Tech Inc. and Fleet Bank of
                  Massachusetts, N.A. and Silicon Valley Bank. (Filed as Exhibit
                  4(j) to the Quarterly Report on Form 10-Q for the quarter
                  ended October 1, 1995)* and amended and restated promissory
                  notes dated as of October 31, 1995.

                                       9

<PAGE>
 
Alpha Industries, Inc. and Subsidiaries ----------------------------------------

       (10)  Material Contracts.

             (a)  Alpha Industries, Inc., 1986 Long-Term Incentive Plan as
                  amended (Filed as Exhibit 10(a) to the Quarterly Report on
                  Form 10-Q for the quarter ended October 2, 1994)*. (1)

             (b)  Alpha Industries, Inc., Employee Stock Purchase Plan as
                  amended October 22, 1992 (Filed as Exhibit 10(b) to the Annual
                  Report on Form 10-K for the fiscal year ended March 28,
                  1993)*. (1)

             (c)  SERP Trust Agreement between the Registrant and the First
                  National Bank of Boston as Trustee dated April 8, 1991 (Filed
                  as Exhibit 10(c) to the Annual Report on Form 10-K for the
                  fiscal year ended March 31, 1991)*. (1)

             (d)  Digital Business Agreement between Digital Equipment
                  Corporation and Registrant dated April 2, 1990. Master Lease
                  Addendum (Ref. No. 6260) to Digital Business Agreement No.
                  3511900 between Digital Equipment Corporation and Registrant
                  dated April 2, 1990 (Filed as Exhibit 10(g) to the Annual
                  Report on Form 10-K for the fiscal year ended March 29,
                  1992)*.

             (e)  Alpha Industries, Inc., Long-Term Compensation Plan dated
                  September 24, 1990 (Filed as Exhibit 10(i) to the Annual
                  Report on Form 10-K for the fiscal year ended March 29,
                  1992)*; amended March 28, 1991 (Filed as Exhibit 10 (a) to the
                  Quarterly Report on Form 10-Q for the quarter ended June 27,
                  1993)* and as further amended October 27, 1994 (Filed as
                  Exhibit 10(f) to the Annual Report on Form 10-K for the fiscal
                  year ended April 2, 1995)*. (1)

             (f)  Master Equipment Lease Agreement between AT&T Commercial
                  Finance Corporation and the Registrant dated June 19, 1992
                  (Filed as Exhibit 10(j) to the Annual Report on Form 10-K for
                  the fiscal year ended March 28, 1993)*.

             (g)  Employment Agreement dated October 1, 1990 between the
                  Registrant and Martin J. Reid, as amended March 26, 1992 and
                  amended January 19, 1993 (Filed as Exhibit 10(k) to the Annual
                  Report on Form 10-K for the fiscal year ended March 28, 1993)*
                  and amended August 10, 1993 (Filed as Exhibit 10(j) to the
                  Quarterly Report on Form 10-Q for the quarter ended July 3,
                  1994)*. (1)

             (h)  Employment Agreement dated October 1, 1990 between the
                  Registrant and George S. Kariotis, as amended May 15, 1991 and
                  amended January 22, 1993 (Filed as Exhibit 10(l) to the Annual
                  Report on Form 10-K for the fiscal year ended March 28, 1993)*
                  and amended August 10, 1993 (Filed as Exhibit 10(k) to the
                  Quarterly Report on Form 10-Q for the quarter ended July 3,
                  1994)*. (1)

             (i)  Employment Agreement dated October 1, 1990 between the
                  Registrant and Patrick Daniel Gallagher, as amended March 24,
                  1992 and amended by Second Amendment dated September 29, 1992
                  and Third Amendment dated January 20, 1993 (Filed as Exhibit
                  10(m) to the Annual Report on Form 10-K for the fiscal year
                  ended March 28, 1993)* and Fourth Amendment dated August 3,
                  1994 (Filed as Exhibit 10(l) to the Quarterly Report on Form
                  10-Q for the quarter ended October 2, 1994)*. (1)

             (j)  Employment Agreement dated April 28, 1994 between the
                  Registrant and Joseph J. Alberici. (Filed as Exhibit 10(o) to
                  the Annual Report on Form 10-K for the fiscal year ended April
                  3, 1994)*; and further amended August 3, 1994 (Filed as
                  Exhibit 10(n) to the Quarterly Report on Form 10-Q for the
                  quarter ended October 2, 1994)*. (1)

             (k)  Consulting Agreement dated August 13, 1992 between the
                  Registrant and Sidney Topol. (Filed as Exhibit 10(p) to the
                  Annual Report on Form 10-K for the fiscal year ended April 3,
                  1994)*. (1)

             (l)  Employment Agreement dated August 3, 1994 between the
                  Registrant and Thomas C. Leonard (Filed as Exhibit 10(p) to
                  the Quarterly Report on Form 10-Q for the quarter ended
                  October 2, 1994)*. (1)

                                       10

<PAGE>
 
- ---------------------------------------- Alpha Industries, Inc. and Subsidiaries

             (m)  Master Lease Agreement between Comdisco, Inc. and the
                  Registrant dated September 16, 1994 (Filed as Exhibit 10(q) to
                  the Quarterly Report on Form 10-Q for the quarter ended
                  October 2, 1994)*.

             (n)  Alpha Industries, Inc., 1994 Non-Qualified Stock Option Plan
                  for Non-Employee Directors (Filed as Exhibit 10(r) to the
                  Quarterly Report on Form 10-Q for the quarter ended October 2,
                  1994)*. (1)

             (o)  Alpha Industries Executive Compensation Plan dated January 1,
                  1995 and Trust for the Alpha Industries Executive Compensation
                  Plan dated January 3, 1995 (Filed as Exhibit 10(p) to the
                  Annual Report on Form 10-K for the fiscal year ended April 2,
                  1995)*. (1)

             (p)  Letter of Employment dated January 24, 1995 between the
                  Registrant and David J. Aldrich (Filed as Exhibit 10(q) to the
                  Annual Report on Form 10-K for the fiscal year ended April 2,
                  1995)*. (1)

             (q)  Alpha Industries, Inc. Savings and Retirement Plan dated March
                  31, 1995 (Filed as Exhibit 10(r) to the Annual Report on Form
                  10-K for the fiscal year ended April 2, 1995)*. (1)

       (11)  Statement re computation of per share earnings**.

       (27)  Financial Data Schedule.

             (b)  Reports on Form 8-K

                  No reports on Form 8-K were filed with the Securities and
                  Exchange Commission during the fiscal quarter ended December
                  31, 1995.



- ----------
*  Not filed herewith. In accordance with Rule 12b-32 promulgated pursuant to
   the Securities Exchange Act of 1934, as amended, reference is hereby made to
   documents previously filed with the Commission, which are incorporated by
   reference herein.
** Reference is made to Note 3 of the notes to Consolidated Financial Statements
   on Page 6 of this Quarterly Report on Form 10-Q, which Note 3 is hereby
   incorporated by reference herein.
(1) Management Contracts.

                                       11

<PAGE>
 

                                  Signatures
                                  ----------

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

Date: February 9, 1996
      ----------------

                                   Alpha Industries, Inc. and Subsidiaries
                                   ---------------------------------------
                                                  Registrant



                                   /s/ Martin J. Reid  
                                   -------------------------------------
                                   Martin J. Reid
                                   Chief Executive Officer
                                   President and Director 



                                   /s/ Paul E. Vincent   
                                   -------------------------------------
                                   Paul E. Vincent
                                   Corporate Controller
                                   Principal Accounting Officer    

                                       12





<PAGE>
                                                      Exhibit 4(f)



                     AMENDED AND RESTATED PROMISSORY NOTE
                    (Working Capital Line of Credit Loans)


$4,500,000                                            Woburn, Massachusetts
                                                      As of October 31, 1995
                                                      (Originally dated as of
                                                      September 29, 1995)


     For value received, the undersigned, ALPHA INDUSTRIES, INC., a Delaware 
corporation and TRANS-TECH, INC., a Maryland corporation (each a "Borrowers" and
collectively the "Borrowers"), jointly and severally promise to pay to SILICON 
                  ---------      
VALLEY BANK (the "Bank") at the office of the Bank located at 3000 Lakeside 
                  ----                         
Drive, P.O. Box 3762, Santa Clara, California 95054, or to its order, the lesser
of Four Million Five Hundred Thousand Dollars ($4,500,000) or the outstanding 
principal amount hereunder, on August 1, 1997 (the "Maturity Date"), together 
                                                    -------------
with interest on the principal amount hereof from time to time outstanding at a 
fluctuating rates per annum set forth in the Credit Agreement referred to below,
payable monthly in arrears on the first day of each calender month occurring 
after the date hereof and on the Maturity Date.

      Computations of interest shall be made by the Bank on the basis of a year 
of 360 days for the actual number of days occurring in the period for which such
interest is payable.

      This promissory note amends and restated the terms and conditions
 of the 
obligations of the Borrowers under the promissory note dated as of September 29,
1995 by the Borrowers to the Bank in the original principal amount of $4,000,000
(the "Original Note"). This note is one of the Working Capital Notes referred to
      -------------
in the credit agreement of even date herewith between the Bank, Fleet Bank of 
Massachusetts, N.A., and the Borrowers (together with all related schedules), as
the same may be amended, modified or supplemented from time to time (the "Credit
                                                                          ------
Agreement"), and is entitled to the benefits thereof and of the other Loan 
- ---------
Documents referred to therein, and is subject to optional and mandatory 
prepayment as provided therein. Except for the capitalized terms referred to 
herein, the terms used in this Note shall have the respective meanings set forth
in the Credit Agreement.  This note is secured inter alia by a Security 
                                               ----- ----
Agreement dated of even date herewith by each Borrower in favor of the Bank as 
Collateral Agent for the benefit of the Banks, as the same may be amended, 
modified or supplemented from time to time.

     Each reference in each Loan Document (as defined in the Credit Agreement) 
to the Working Capital Note of the Bank, "thereof," "therein," "thereunder," or 
words of like import referring to the Original Note, shall mean and be a 
reference to the Original Note, as amended and restated hereby.

     Upon the occurrence of any Event of Default under, and as defined in, the
Credit Agreement, at the option of the Bank, the principal amount then
outstanding of and the accrued interest on the advances under this note and all
other amounts payable under this note shall become immediately due and payable,
without notice (including, without limitation, notice of intent to accelerate),
presentment, demand, protest or other formalities of any kind, all of which are
hereby expressly waived by the Borrowers.

     The Bank shall keep a record of the amount and the date of the making of 
each advance pursuant to the Credit Agreement and each payment of principal with
respect thereto by


<PAGE>
                                      -2-

containing a computerized record of such information and printouts of such 
computerized record, which computerized record, and the printouts thereof, shall
constitute prima facie evidence of the accuracy of the information so endorsed.
           ----- -----
      The undersigned agrees to pay all reasonable costs and expenses of the 
Bank (including, without limitation, the reasonable fees and expenses of 
attorneys) in connection with the enforcement of this note and the other Loan 
Documents and the preservation of their respective rights hereunder and 
thereunder.

      No delay or omission on the part of the Bank in exercising any right 
hereunder shall operate as a waiver of such right or of any other right of the 
Bank, nor shall any delay, omission or waiver on any one occasion be deemed a 
bar to or waiver of the same or any other right on any future occasion.  The 
Borrowers and every endorser or guarantor of this note regardless of the time, 
order or place of signing waives presentment, demand, protest and notices of 
every kind and assents to any one or more extensions or postponements of the 
time of payment or any other indulgences, to any substitutions, exchanges or 
releases of collateral for this note, and to the additions or releases of any 
other parties or persons primarily or secondarily liable.

      THIS NOTE SHALL BE DEEMED DELIVERED TO THE BANK AND ACCEPTED BY THE BANK 
IN THE STATE OF CALIFORNIA.

      EACH BORROWER HEREBY EXPRESSLY WAIVES ANY RIGHT IT MAY NOW OR HEREAFTER 
HAVE TO A JURY TRIAL IN ANY SUIT, ACTION OR PROCEEDING WHICH ARISES OUT OF OR BY
REASON OF THIS NOTE, ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR
THE TRANSACTIONS CONTEMPLATED HEREBY.

     BY ITS EXECUTION AND DELIVERY OF THIS NOTE, EACH BORROWER ACCEPTS FOR
ITSELF AND IN CONNECTION WITH ITS PROPERTIES, GENERALLY AND UNCONDITIONALLY, THE
NON-EXCLUSIVE JURISDICTION OF ANY STATE OR FEDERAL COURT OF COMPETENT
JURISDICTION IN THE COMMONWEALTH OF MASSACHUSETTS (AND IN THE EVENT THE BANK IS
FOR ANY REASON DENIED ACCESS TO THE COURTS OF MASSACHUSETTS, THEN SOLELY IN SUCH
CASE, CALIFORNIA) IN ANY ACTION, SUIT OR PROCEEDING OF ANY KIND AGAINST IT WHICH
ARISES OUT OF OR BY REASON OF THIS NOTE, ANY LOAN DOCUMENT (AS DEFINED IN THE
CREDIT AGREEMENT), OR THE TRANSACTIONS CONTEMPLATED HEREBY, IN ADDITION TO ANY
OTHER COURT IN WHICH SUCH ACTION, SUIT OR PROCEEDING MAY BE BROUGHT, IRREVOCABLY
AGREES TO BE BOUND BY ANY FINAL JUDGMENT RENDERED BY ANY SUCH COURT IN ANY SUCH
ACTION, SUIT OR PROCEEDING IN WHICH IT SHALL HAVE BEEN SERVED WITH PROCESS IN
THE MANNER HEREINAFTER PROVIDED, SUBJECT TO EXERCISE AND EXHAUSTION OF ALL
RIGHTS OF APPEAL AND TO THE EXTENT THAT IT MAY LAWFULLY DO SO, WAIVES AND AGREES
NOT TO ASSERT, BY WAY OF MOTION, AS A DEFENSE OR OTHERWISE, IN SUCH ACTION, SUIT
OR PROCEEDING ANY CLAIMS THAT IT IS NOT PERSONALLY SUBJECT TO THE JURISDICTION
OF SUCH COURT, THAT ITS PROPERTY IS EXEMPT OR IMMUNE FROM ATTACHMENT OR
EXECUTION, THAT THE ACTION, SUIT OR PROCEEDING IS BROUGHT IN AN INCONVENIENT
FORUM OR THAT THE VENUE THEREOF IS IMPROPER, AND AGREES THAT PROCESS MAY BE
SERVED UPON IT IN ANY SUCH ACTION, SUIT OR PROCEEDING IN THE MANNER PROVIDED BY
CHAPTER 223A OF THE GENERAL LAWS OF MASSACHUSETTS, RULE 4 OF THE MASSACHUSETTS
RULE OF CIVIL PROCEDURE OR RULE 4 OF THE FEDERAL RULES OF CIVIL PROCEDURE.





<PAGE>
 
                                      -3-

     ALL RIGHTS AND OBLIGATIONS HEREUNDER SHALL BE GOVERNED BY THE LAW OF THE 
COMMONWEALTH OF MASSACHUSETTS AND THIS NOTE SHALL BE DEEMED TO BE UNDER SEAL.

Attest:                                ALPHA INDUSTRIES, INC.



/s/ Donald E. Paulson                  By: /s/ D J Aldrich
- -----------------------------             ------------------------------
Name: DONALD E. PAULSON                   Name: D J ALDRICH
Title: SECRETARY                          Title: V P & TREAS.


[Seal]


Attest:                                TRANS-TECH, INC.



/s/ N R Pitaro                         By: /s/ D J Aldrich
- -----------------------------             ------------------------------
Name: N R PITARO                          Name: D J ALDRICH
Title: ASST SCTY                          Title: TREASURER

[Seal]

<PAGE>
 
                                                                    Exhibit 4(f)

                     AMENDED AND RESTATED PROMISSORY NOTE
                    (Working Capital Line of Credit Loans)

$3,000,000                                               Woburn, Massachusetts
                                                         As of October 31, 1995
                                                         (Originally dated as of
                                                         September 29, 1995)


     For value received, the undersigned, ALPHA INDUSTRIES, INC., a Delaware 
corporation and TRANS-TECH, INC., a Maryland corporation (each a "Borrower" and 
                                                                  --------
collectively the "Borrowers"), jointly and severally promise to pay to FLEET 
                  ---------
BANK OF MASSACHUSETTS, N.A. (the "Bank") at the office of the Bank located at 
                                  ----
Fleet Center, 75 State Street, Boston, Massachusetts 02109-1810, or to its 
order, the lesser of Three Million Dollars ($3,000,000) or the outstanding 
principal amount hereunder, on August 1, 1997 (the "Maturity Date"), together
                                                    -------------
with interest on the principal amount hereof from time to time outstanding at a 
fluctuating rates per annum set forth in the Credit Agreement referred to 
below, payable monthly in arrears on the first day of each calendar month 
occurring after the date hereof and on the Maturity Date.

     Computations of interest shall be made by the Bank on the basis of a year
of 360 days for the actual number of days occurring in the period for which such
interest is payable.

     This promissory note amends and restates the terms and conditions of the
obligations of the Borrowers under the promissory note dated as of September 29,
1995 by the Borrowers to the Bank in the original principal amount of $2,500,000
(the "Original Note"). This note is one of the Working Capital Notes
      -------------
referred to in the credit agreement of even date herewith between the Bank,
Silicon Valley Bank, and the Borrowers (together with all related schedules), as
the same may be amended, modified or supplemented from time to time (the "Credit
                                                                          ------
Agreement"), and is entitled to the benefits thereof and of the
- ---------
other Loan Documents referred to therein, and is subject to optional and
mandatory prepayment as provided therein. Except for the capitalized terms
referred to herein, the terms used in this Note shall have the respective
meanings set forth in the Credit Agreement. This note is secured inter alia by a
                                                                 ----- ----
Security Agreement dated of even date herewith by each Borrower in
favor of Silicon Valley Bank as Collateral Agent for the benefit of the Banks,
as the same may be amended, modified or supplemented from time to time.

     Each reference in each Loan Document (as defined in the Credit Agreement) 
to the Working Capital Note of the Bank, "thereof," "therein," "thereunder," or 
words of like import referring to the Original Note, shall mean and be a 
reference to the Original Note, as amended and restated hereby.

     Upon the occurrence of any Event of Default under, and as defined in, the 
Credit Agreement, at the option of the Bank, the principal amount then 
outstanding of and the accrued interest on the advances under this note and all 
other amounts payable under this note shall become immediately due and payable, 
without notice (including, without limitation, notice of intent to accelerate), 
presentment, demand, protest or other formalities of any kind, all of which are 
hereby expressly waived by the Borrowers.





<PAGE>
                                      -2-

    The Bank shall keep a record of the amount and the date of the making of 
each advance pursuant to the Credit Agreement and each payment of principal 
with respect thereto by maintaining a computerized record of such information 
and printouts of such computerized record, which computerized record, and the 
printouts thereof, shall constitute prima facie evidence of the accuracy of the 
                                    ----- -----
information so endorsed.

    The undersigned agrees to pay all reasonable costs and expenses of the Bank 
(including, without limitation, the reasonable fees and expenses of attorneys) 
in connection with the enforcement of this note and the other Loan Documents and
the preservation of their respective rights hereunder and thereunder.

    No delay or omission on the part of the Bank in exercising any right 
hereunder shall operate as a waiver of such right or of any other right of the 
Bank, nor shall any delay, omission or waiver on any one occasion be deemed a 
bar to or waiver of the same or any other right on any future occasion.  The 
Borrowers and every endorser or guarantor of this note regardless of the time, 
order or place of signing waives presentment, demand, protest and notices of 
every kind and assents to any one or more extensions or postponements of the 
time of payment or any other indulgences, to any substitutions, exchanges or 
releases of collateral for this note, and to the additions or releases of any 
other parties or persons primarily or secondarily liable.

    EACH BORROWER HEREBY EXPRESSLY WAIVES ANY RIGHT IT MAY NOW OR HEREAFTER HAVE
TO A JURY TRIAL IN ANY SUIT, ACTION OR PROCEEDING WHICH ARISES OUT OF OR BY 
REASON OF THIS NOTE, ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR 
THE TRANSACTIONS CONTEMPLATED HEREBY.

    BY ITS EXECUTION AND DELIVERY OF THIS NOTE, EACH BORROWER ACCEPTS FOR ITSELF
AND IN CONNECTION WITH ITS PROPERTIES, GENERALLY AND UNCONDITIONALLY, THE 
NON-EXCLUSIVE JURISDICTION OF ANY STATE OR FEDERAL COURT OF COMPETENT 
JURISDICTION IN THE COMMONWEALTH OF MASSACHUSETTS IN ANY ACTION, SUIT OR 
PROCEEDING OF ANY KIND AGAINST IT WHICH ARISES OUT OF OR BY REASON OF THIS NOTE,
ANY LOAN DOCUMENT (AS DEFINED IN THE CREDIT AGREEMENT), OR THE TRANSACTIONS 
CONTEMPLATED HEREBY, IN ADDITION TO ANY OTHER COURT IN WHICH SUCH ACTION, SUIT 
OR PROCEEDING MAY BE BROUGHT, IRREVOCABLY AGREES TO BE BOUND BY ANY FINAL 
JUDGMENT RENDERED BY ANY SUCH COURT IN ANY SUCH ACTION, SUIT OR PROCEEDING IN 
WHICH IT SHALL HAVE BEEN SERVED WITH PROCESS IN THE MANNER HEREINAFTER PROVIDED,
SUBJECT TO EXERCISE AND EXHAUSTION OF ALL RIGHTS OF APPEAL AND TO THE EXTENT 
THAT IT MAY LAWFULLY DO SO, WAIVES AND AGREES NOT TO ASSERT, BY WAY OF MOTION, 
AS A DEFENSE OR OTHERWISE, IN SUCH ACTION, SUIT OR PROCEEDING ANY CLAIMS THAT IT
IS NOT PERSONALLY SUBJECT TO THE JURISDICTION OF SUCH COURT, THAT ITS PROPERTY 
IS EXEMPT OR IMMUNE FROM ATTACHMENT OR EXECUTION, THAT THE ACTION, SUIT OR 
PROCEEDING IS BROUGHT IN AN INCONVENIENT FORUM OR THAT THE VENUE THEREOF IS 
IMPROPER, AND AGREES THAT PROCESS MAY BE SERVED UPON IT IN ANY SUCH ACTION, SUIT
OR PROCEEDING IN THE MANNER PROVIDED BY CHAPTER 223A OF THE GENERAL LAWS OF 
MASSACHUSETTS, RULE 4 OF THE MASSACHUSETTS RULES OF CIVIL PROCEDURE OR RULE 4 OF
THE FEDERAL RULES OF CIVIL PROCEDURE.







<PAGE>
 
 
                                      -3-

     ALL RIGHTS AND OBLIGATIONS HEREUNDER SHALL BE GOVERNED BY THE LAW OF THE 
COMMONWEALTH OF MASSACHUSETTS AND THIS NOTE SHALL BE DEEMED TO BE UNDER SEAL.

Attest:                                ALPHA INDUSTRIES, INC.



/s/ Donald E Paulson                   By: /s/ D J Aldrich
- -----------------------------             ------------------------------
Name: DONALD E PAULSON                    Name: D J ALDRICH
Title: SECRETARY                          Title: V P & TREASURER


[Seal]


Attest:                                TRANS-TECH, INC.



/s/ N R Pitaro                         By: /s/ D J Aldrich
- -----------------------------             ------------------------------
Name: N R PITARO                          Name: D J ALDRICH
Title: ASST SCTY                          Title: TREASURER

[SEAL]

WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.


<TABLE> <S> <C>


<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED IN PART FROM THE
FINANCIAL STATEMENTS OF ALPHA INDUSTRIES, INC. AND SUBSIDIARIES AS OF AND FOR
THE NINE MONTHS ENDED DECEMBER 31, 1995 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                       MARCH 31, 1996
<PERIOD-END>                               DEC-31-1995
<CASH>                                          21,247
<SECURITIES>                                         0
<RECEIVABLES>                                   17,113
<ALLOWANCES>                                       591
<INVENTORY>                                     11,834
<CURRENT-ASSETS>                                50,419
<PP&E>                                          80,679
<DEPRECIATION>                                  56,768
<TOTAL-ASSETS>                                  75,022
<CURRENT-LIABILITIES>                           13,595
<BONDS>                                          3,419
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                         2,477
<OTHER-SE>                                      54,598
<TOTAL-LIABILITY-AND-EQUITY>                    75,022
<SALES>                                         71,404
<TOTAL-REVENUES>                                71,404
<CGS>                                           47,572
<TOTAL-COSTS>                                   66,974
<OTHER-EXPENSES>                                 (357)
<LOSS-PROVISION>                                    44
<INTEREST-EXPENSE>                                 514
<INCOME-PRETAX>                                  4,273
<INCOME-TAX>                                       641
<INCOME-CONTINUING>                              3,632
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     3,632
<EPS-PRIMARY>                                     0.43
<EPS-DILUTED>                                     0.43
        

</TABLE>