ES Design June 2023

DESIGN

SPONSORED

to support hermetic assembly services. Rochester is also registered to manufacture ITAR products. Rochester is also US DLA (Defence Logistics Agency) certi ed for in-house assembly, electrical test screening, burn-in, reliability testing, and QCI Groups A, B, C, and D. Rochester Electronics had inventory available of the required active devices in its facilities, ensuring sufficient materials to support the customer’s build. Rochester’s sales and engineering teams met with the customer to discuss its specific requirements. The design team developed a process flow that optimised the product performance, while supporting long-term manufacturing at Rochester’s US-based facility. Following detailed reviews, materials were received from the customer and an official design review was held. Prototype assembly commenced at Rochester’s facilities. 100 units of prototype hardware, which were radiation hard tested by the customer, successfully passed qualification, and met all program requirements. The prototypes required passing numerous technical specifications to meet the program’s

criteria:

• Polished thin film metalised alumina substrate • Four transistor attachments using 97/3 Au/ Si • Substrate attachment to packaging using 80/20 Au/Sn solder • Logic chip attachment using JM7000 adhesive • Wire bonding with 1 mil gold wire • Hermetically sealed hybrid packaging • Electrical testing to original protocols • Burn-in, reliability testing, and QCI Groups A, B, C, and D screening The hybrid module assembly is currently in full production with more than 3,000 parts delivered to date. Rochester Electronics was the program's ideal partner, not only because of the required experienced manufacturing skills, but also due to the necessary levels of component inventory needed for an ongoing ITAR certified program. The customer was saved from significant redesign and requalification costs and kept its reputation as a key US government supplier. Rochester Electronics provides assembly solutions extending the product lifecycle for critical devices.

For more information, visit: www.rocelec.com

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