Continuing Focus on Defense, Security & Aerospace, Plexus Receives FAR 145 Repair Station Certification

Plexus Corp. (Nasdaq: PLXS) announced today that it has received FAR 145 Repair Station certification in Appleton, Wisconsin to support customers in the Defense, Security and Aerospace (D/S/A) industries. This certification compliments Plexus' facilities that are already compliant to AS9100 and the National Aerospace and Defense Contractors Accreditation Program (Nadcap), by allowing Plexus to repair, and return to service, aircraft components ranging from individual circuit card assemblies to line replaceable units.

Jim Anderson, Customer Management Vice President for the D/S/A Market Sector, commented, "Plexus is pleased to be a leading contract manufacturer of electronic products in the D/S/A sector. Feedback from our existing customers on this new certification has been positive. We have proactively aligned our certification activities to our customer's needs to provide seamless transitions into our engineering design centers and manufacturing sites."

Plexus has the following certifications in place to support the D/S/A industries:

* ITAR - In place at all United States based engineering design centers and manufacturing sites
* AS9100 - In place in three sites in Wisconsin, USA, two sites in Penang, Malaysia, and one site in Kelso, Scotland
* CAS Compliance
* Nadcap - In place in two sites in Wisconsin, USA, and one site in Penang, Malaysia
* FAR 145 - In place in one site in Wisconsin, USA, and working towards compliance in one site in Penang, Malaysia, with completion slated for CY2010

"Based on customer input and technology road mapping, we have increased our efforts in this market segment to support existing and future customer requirements," stated Brian Wilson, D/S/A Market Sector Vice President. "Achieving the FAR 145 Repair Station certification is a true testament to our dedication and vision to be best in the world at serving customers in the mid- to low-volume, higher mix segment of the EMS industry."

About Plexus Corp. - The Product Realization Company

Plexus (www.plexus.com) is an award-winning participant in the Electronics Manufacturing Services (EMS) industry, providing product design, supply chain and materials management, manufacturing, test, fulfillment and aftermarket solutions to branded product companies in the Wireline/Networking, Wireless Infrastructure, Medical, Industrial/Commercial and Defense/Security/Aerospace market sectors.

The Company's unique Focused Factory manufacturing model and global supply chain solutions are strategically enhanced by value-added product design and engineering services. Plexus specializes in mid- to low-volume, higher mix customer programs that require flexibility, scalability, technology and quality.

Plexus provides award-winning customer service to more than 100 branded product companies in North America, Europe and Asia Pacific.

Safe Harbor and Fair Disclosure Statement

The statements contained in this release which are guidance or which are not historical facts (such as statements in the future tense and statements including "believe," "expect," "intend," "plan," "anticipate," "goal," "target" and similar terms and concepts), including all discussions of periods which are not yet completed, are forward-looking statements that involve risks and uncertainties. These risks and uncertainties include, but are not limited to: the economic performance of the electronics, technology and defense industries; the risk of customer delays, changes or cancellations in both ongoing and new programs; the poor visibility of future orders, particularly in view of current economic conditions; the effects of the volume of revenue from certain sectors or programs on our margins in particular periods; our ability to secure new customers and maintain our current customer base and deliver product on a timely basis; the risks relative to new customers, including a recently announced customer in the Industrial/Commercial sector, which risks include customer delays, start-up costs, our potential inability to execute and lack of a track record of order volume and timing; the risks of concentration of work for certain customers; the risk that new program wins and/or customer demand may not result in the expected revenue or profitability; the fact that customer orders may not lead to long-term relationships; the weakness of the global economy and the continuing instability of the global financial markets and banking system, including the potential inability on our part or that of our customers or suppliers to access cash investments and credit facilities; material cost fluctuations and the adequate availability of components and related parts for production; the effect of changes in average selling prices; the effect of start-up costs of new programs and facilities, including our recent and planned expansions, such as our new facilities in Hangzhou, China and Oradea, Romania; the adequacy of restructuring and similar charges as compared to actual expenses; the degree of success and the costs of efforts to improve the financial performance of our Mexican operations; possible unexpected costs and operating disruption in transitioning programs; the potential effect of world events (such as drug-cartel related violence in Mexico, changes in oil prices, terrorism and war in the Middle East); the impact of increased competition; and other risks detailed in the Company's Securities and Exchange Commission filings (particularly in Part II, Item 1A of our quarterly report on Form 10-Q for the quarter ended July 4, 2009).