Second Amendment to Revolving Credit Agreement dated September 25, 2008



 EXHIBIT 10.20.2 
 SECOND AMENDMENT TO REVOLVING CREDIT AGREEMENT 
 This Second Amendment to Revolving Credit Agreement
(this “Amendment”) is entered into as of September 25, 2008, by and among the financial institutions from time to time signatory hereto (individually a “Lender,” and any and all such financial institutions collectively the
“Lenders”), Comerica Bank, as Administrative Agent for the Lenders (in such capacity, the “Agent”), and Microsemi Corporation (“Parent”), Microsemi Corp. – Power Products Group, Microsemi Corp. – Analog Mixed
Signal Group, a Delaware corporation (fka Microsemi Corp. – Integrated Products), Microsemi Corp. – Massachusetts and Microsemi Corp. – Scottsdale (each, a “Borrower” and collectively with Parent, “Borrowers”).

 RECITALS 
 Borrowers,
Agent and Lenders are parties to that certain Revolving Credit Agreement dated as of December 29, 2006, as amended from time to time, including by that certain First Amendment to Revolving Credit Agreement dated as of July 25, 2007 (the
“Agreement”). The parties desire to amend the Agreement in accordance with the terms of this Amendment. 
 NOW, THEREFORE, the
parties agree as follows: 
 1. The following defined terms in Section 1.1 of the Agreement hereby are added, amended or restated as
follows: 
 “MDT” means Microwave Devices Technology Corporation, a Massachusetts corporation. 
 “MDT Acquisition” means the acquisition by Parent of substantially all of the assets of MDT for total consideration of
approximately Eight Million Dollars ($8,000,000) in November 2007. 
 “SEMICOA” means SEMICOA, a California
corporation. 
 “SEMICOA Acquisition” means the acquisition by Parent of SEMICOA for total consideration of
approximately Twenty-Seven Million Dollars ($27,000,000). 
 “TSI” means TSI Microelectronics Corporation, a
Massachusetts corporation. 
 “TSI Acquisition” means the acquisition by Parent of substantially all of the assets
of TSI for total consideration of approximately Two Million Dollars ($2,000,000) in December 2007. 
 2. Notwithstanding any provision of the
Agreement to the contrary, Bank hereby (i) consents to Parent’s consummation of the (x) the MDT Acquisition; (y) TSI Acquisition; and (z) the SEMICOA Acquisition (collectively, the “Permitted Transactions”);
(ii) agrees that consideration paid by Parent in connection with the Permitted Transactions shall not be included in calculating the limit on Permitted Acquisitions set forth in clause (g) of the defined term “Permitted
Acquisition;” and (iii) provides the foregoing consent and agreement in each case, provided that no default or Event of Default has occurred or is continuing prior to, or would result after giving effect to, any of the Permitted
Transactions. 
 3. No course of dealing on the part of Agent or any Lender, or their officers, nor any failure or delay in the exercise of
any right by Agent or any Lender, shall operate as a waiver thereof, and any single or partial exercise of any such right shall not preclude any later exercise of any such right. Agent’s or any Lender’s failure at any time to require
strict performance by Borrowers of any provision shall not affect any right of Agent and each Lender thereafter to demand strict compliance and performance. Any suspension or waiver of a right must be in writing signed by an officer of Agent.








 4. Unless otherwise defined, all initially capitalized terms in this Amendment shall be as defined in the
Agreement. The Agreement, as amended hereby, shall be and remain in full force and effect in accordance with its respective terms and hereby is ratified and confirmed in all respects. Except as expressly set forth herein, the execution, delivery,
and performance of this Amendment shall not operate as a waiver of, or as an amendment of, any right, power, or remedy of Agent or any Lender under the Agreement, as in effect prior to the date hereof. 
 5. Each Borrower represents and warrants that the Representations and Warranties contained in the Agreement are true and correct as of the date of this
Amendment, and that no Event of Default has occurred and is continuing. 
 6. As a condition to the effectiveness of this Amendment, Agent
shall have received, in form and substance satisfactory to Agent, the following: 
 (a) this Amendment, duly executed by Borrower;

 (b) all reasonable fees and expenses incurred through the date of this Amendment, which may be debited from any of Parent’s
accounts; and 
 (c) such other documents, and completion of such other matters, as Agent may reasonably deem necessary or appropriate.

 7. This Amendment may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall
constitute one instrument. 
 [Balance of Page Intentionally Left Blank] 







 IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the first date above written.

  

							
	COMERICA BANK,	    	MICROSEMI CORPORATION,
	as Administrative Agent	    	a Delaware corporation
				
	By:	 	 /s/ Jennifer S. Seto
	    	By:	 	 /s/ John W. Hohener

	Its:	 	Vice President	    	Its:	 	Vice President, Chief Financial Officer, Secretary and Treasurer
			
		 		    	MICROSEMI CORP. – POWER PRODUCTS GROUP, a Delaware corporation
				
		 		    	By:	 	 /s/ John W. Hohener

		 		    	Its:	 	Vice President, Chief Financial Officer, Secretary and Treasurer
			
		 		    	MICROSEMI CORP. - ANALOG MIXED SIGNAL GROUP, a Delaware corporation (fka MICROSEMI CORP. – INTEGRATED PRODUCTS)
				
		 		    	By:	 	 /s/ John W. Hohener

		 		    	Its:	 	Vice President, Chief Financial Officer, Secretary and Treasurer
			
		 		    	MICROSEMI CORP. - MASSACHUSETTS, a Delaware corporation
				
		 		    	By:	 	 /s/ John W. Hohener

		 		    	Its:	 	Vice President, Chief Financial Officer, Secretary and Treasurer

 [Signature Page to Second Amendment to Revolving Credit Agreement] 
 [Signatures Continued Next Page] 








			
	MICROSEMI CORP. - SCOTTSDALE, an Arizona corporation
		
	By:	 	 /s/ John W. Hohener

	Its:	 	Vice President, Chief Financial Officer, Secretary and Treasurer


  

			
	COMERICA BANK, as a Lender and as Issuing Lender
		
	By:	 	 /s/ Jennifer S. Seto

	Its:	 	Vice President

 [Signature Page to Second Amendment to Revolving Credit Agreement]