CONSENT AND WAIVER

         Consent to Assignment and Waiver of Rights ("Consent and Waiver"),
effective as of September 18, 2002, given by Merrimac Industries Inc. (the
"Company") to Ericsson Holding International B.V. ("Seller") and Infineon
Technologies AG ("Purchaser").

         WHEREAS, Seller has entered into an agreement with Purchaser whereby
Seller and its affiliated companies have agreed to sell the microelectronics
business (excluding opto-semiconductors and power modules, but including the RF
power business) of the Ericsson Group (the "Business") to Purchaser;

         WHEREAS, as part of the Business, Seller owns 475,000 shares of the
Company's common stock (the "Shares") and 475,000 common stock purchase rights
(the "Rights") issued under the Company's Rights Agreement, dated March 9, 1999,
as amended through the date hereof (the "Rights Agreement") and Seller has the
right to acquire 119,381 shares of the Company's common stock (and the
applicable Rights) at a Purchase Price of $17.80 per share (the "Warrant
Shares," and together with the Shares and the Rights, the "Securities") upon the
exercise of that certain Warrant, dated October 26, 2000 (the "Warrant");

         WHEREAS, Seller and the Company are parties to the following
agreements: (i) that certain Stock Purchase and Exclusivity Letter Agreement,
dated April 7, 2000, as amended by that certain letter agreement dated February
1, 2002 (the "Letter Agreement"), (ii) that certain Registration Rights
Agreement, dated April 7, 2000 (the "April Registration Rights Agreement"),
(iii) that certain Registration Rights Agreement, dated October 26, 2000 (the
"October Registration Rights Agreement") and (iv) that certain Subscription
Agreement, dated as of October 26, 2000 (the "Subscription Agreement," and
together with the Letter Agreement, the April Registration Rights Agreement and
the October Registration Rights Agreement, the "Agreements"); and

         WHEREAS, Purchaser is willing to purchase the Shares, the Rights and
the Warrant from Seller in connection with a purchase of the Business, subject
to, among other things: (i) Seller assigning to Purchaser, with the Company's
consent, the Agreements and the Warrant and all of Seller's rights, title and
interest in and to the Agreements and the Warrant and (ii) the waiver by the
Company of certain statutory rights under the Delaware General Corporation Law
(the "DGCL") and certain other rights in connection with the Rights Agreement;

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto agree as
follows:

         1. The Company hereby consents to the assignment by Seller to Purchaser
         (or its affiliate) of the Agreements and the Warrant and all of
         Seller's rights, title and interest in and to the Agreements and the
         Warrant, as modified in accordance with that certain modification
         agreement attached hereto as Exhibit A and incorporated by reference
         herein (the "Modification Agreement").

         2. Purchaser hereby agrees to assume, upon the assignment by Seller to
         Purchaser of the Agreements and the Warrant, as modified by the
         Modification Agreement, and all






         of Seller's rights, title and interest in and to the Agreements and the
         Warrant, all obligations of Seller under the Agreements and the
         Warrant, as modified by the Modification Agreement, arising after the
         effective date hereof. Seller and each of its affiliates are hereby
         released and discharged from any and all duties, liabilities and
         obligations arising under the Agreements after the effective date
         hereof.

         3. Subject to Section 2, the Company hereby acknowledges and agrees
         that except as expressly amended by Purchaser and the Company in
         writing in accordance with the Modification Agreement, each of the
         Agreements and the Warrant shall remain in full force and effect in
         accordance with its respective terms, without any waiver, amendment or
         modification of any term, condition or provision thereof. Nothing
         herein or otherwise is, or shall be deemed, a waiver of any right of
         Seller (or Purchaser (or its assignee) as assignee of Seller, as the
         case may be) or any obligation of the Company under any of the
         Agreements or the Warrant. The Company hereby acknowledges and agrees
         that the Agreements and the Warrant are in the form originally filed
         with the Securities and Exchange Commission and that there have been no
         amendments, modifications, supplements or other changes to any of the
         Agreements or the Warrant from such forms other than the February
         1,2002 amendment to the Letter Agreement, the number of Shares
         purchasable, and the Purchase Price (as defined in the Warrant)
         thereof, under the Warrant as set forth in the second recital hereof.

         4. The Company represents and warrants to Purchaser that the Company
         has, prior to the date hereof, amended the Rights Agreement in
         substantially the form attached hereto as Exhibit B and incorporated by
         reference herein. The Company hereby represents and warrants to
         Purchaser that the Company's board of directors has, prior to the date
         hereof, approved the acquisition by Purchaser of the Securities,
         including, without limitation, the Warrant Shares upon exercise, if
         any, of the Warrant, and the other transactions contemplated hereby,
         including, without limitation, the Modification Agreement. The Company
         represents and warrants to Purchaser that the restrictions in Section
         203(a) of the DGCL do not apply to the Company. The Company covenants
         and agrees that if, at any time after the date hereof, it is determined
         that Section 203(a) of the DGCL applies to Purchaser in connection with
         the Securities, including, without limitation, the Warrant Shares upon
         exercise, if any, of the Warrant as modified by the Modification
         Agreement, or otherwise in connection with the transactions
         contemplated hereby, then the Company shall take or cause to be taken
         all actions necessary to exempt Purchaser from such application.
         Attached hereto as Annex X is a certificate duly executed by the
         secretary of the Company certifying as to the incumbency of the
         president of the Company and attaching and certifying as authentic duly
         adopted minutes and resolutions of the Company's board of directors
         reflecting (1) the approval of the acquisition by the Purchaser of the
         Securities, (2) the adoption and approval of the amendment to the
         Rights Agreement attached hereto as Exhibit A, (3) the determination by
         the Company's board of directors to exempt each of the transactions
         contemplated hereby from the application of Section 203 of the DGCL,
         and (4) the adoption and approval of each of the other transactions
         contemplated hereby, including, without limitation, the Modification
         Agreement, with the incumbency of the secretary of the




         Company certified by the president of the Company. The Company
         represents and warrants, and such certificate shall certify, that the
         resolutions attached to Annex X have not been modified, replaced or
         supplemented since the date of their adoption, are in full force and
         effect and are all of the resolutions applicable to any of the
         foregoing. The Company further represents and warrants that this
         Consent and Waiver has been duly executed and delivered and constitutes
         the binding obligation of the Company, enforceable against the Company
         in accordance with its terms.

         5. This Consent and Waiver shall be governed by, and construed and
         interpreted in accordance with, the laws of the State of New York,
         without giving effect to any conflict of law provisions thereof. This
         Consent and Waiver may not be amended, supplemented or modified nor may
         the obligation of the parties hereto be waived, except by an instrument
         in writing signed by each of the parties hereto and by Purchaser. This
         Consent and Waiver may be executed in any number of counterparts each
         of which when so executed shall be deemed an original and all of which
         counterparts together shall constitute one and the same instrument.

                              [SIGNATURE TO FOLLOW]







         IN WITNESS WHEREOF, each of the parties has caused this Consent and
Waiver to be duly executed as of the date first written above.

                                                MERRIMAC INDUSTRIES INC.


                                                By:    /s/ Mason N. Carter
                                                       -------------------------
                                                Name:  Mason N. Carter
                                                Title: Chief Executive Officer



ACKNOWLEDGED AND AGREED:
ERICSSON HOLDING INTERNATIONAL B.V.


By:    /s/ CGJM Evers
- --------------------------
Name:  CGJM Evers
Title: Controller


ACKNOWLEDGED AND AGREED:
INFINEON TECHNOLOGIES AG

By:    /s/ Bogel
- --------------------------
Name:  Bogel
Title: Corporate Legal Counsel



                                    EXHIBIT A

                             Modification Agreement

                   (included as Exhibit 99.2 of this Form 8-K)

                                    EXHIBIT B

                       Amendment No. 6 to Rights Agreement

                   (included as Exhibit 99.3 of this Form 8-K)