Exhibit 10.39 First Extension of Change of Control Agreement Dated July 21, 2004 The Change of Control Agreement "the Agreement" executed on the 21st day of July 2004 by and between Eric Zanin (the "Executive") and Parlex Corporation (the "Company") is hereby extended to the 30th day of June 2006. All of the terms and conditions of the Agreement remain unchanged. IN WITNESS WHEREOF, the parties hereto have each caused the Agreement to be duly executed and delivered as of the date set forth above. PARLEX CORPORATION /s/ Peter J. Murphy ------------------------------------ Peter J. Murphy President EXECUTIVE /s/ Eric Zanin ------------------------------------ Name: Eric Zanin Date: July 21, 2005