Coining Cover Assemblies
Coining Cover Assemblies

COVER ASSEMBLIES & PACKAGE LIDS FOR MICROELECTRONIC DEVICES

Coining Cover Assemblies (package lids) offer many advantages for hermetic sealing processes of electronic packages over techniques using separate solder preforms and covers. The base material, either Kovar™ or Alloy 42, is electroplated with nickel for solderability and to prevent corrosion in the future. The base is then electroplated with gold to provide a highly solderable surface. Finally, the solder preform is welded to the base.

Cover Assembly Base Composition: Alloy: Typically Kovar™ or Alloy 42. Aluminum alloys, Titanium and Stainless Steel are available upon request.

Plating: Typically Nickel plating per QQ-N-290, 50 – 350 micro-inches thick followed by Gold electroplating per MIL-G-45204, Type III, Grade A, 50 micro-inches thick minimum. Alternate plating schemes, including four layer plating and customer specific thicknesses, are available upon request. Base will meet the requirements of MIL-M-38510.

Cover Assembly Processing Information: We recommend a typical clip force of 0.9-2 lbs. Clip force varies depending on lid cover size, preform thickness, lid flatness, and seal-ring flatness. Typical sealing profiles allow for 2-5 minutes above 280 C (melting temperature) with a peak temperature not exceeding 340 C in dry nitrogen, or hydrogen.

FURTHER INFORMATION & REQUEST FORM:

Contact Us

Tel: +44 (0)1264 334505

Email: enquiries@inseto.co.uk

Applications

Hybrid Packages Sealing, Ceramic Lid Attach, Hermetic Component Covers, Microelectronic Device Lids, High Reliability Devices

Industry Segments

Semiconductor Production, Military & Aerospace, Telecommunications, Medical Electronics, Photonics Components, Microwave Electronics, Microelectronics, Power Semiconductor Assembly, Semiconductor Back-end Assembly, PCB Assembly Industries, Universities, Passive Component Manufacturing, Medical Devices

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Available from Inseto in the United Kingdom, Ireland & Nordic Region

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Telephone:
+44 (0)1264 334505

Email:
enquiries@inseto.co.uk

ISO 9001 Certificate No. 12416