Compact package for electronic module

Details Compact package for electronic module Compact package for electronic module

1989-05-15

1992-02-25

Hille, Rolf

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361399, 235488, 235489, 235492, 368 87, 368 88, 365 52, 365228, 365229, 70278, H01L 2302

Patent

active

050917714

ABSTRACT:
A very compact package for an electronic data module, which includes battery-backed memory. A two-part metal container is used, which has two shallow concave pieces which fit together. The integrated circuit (in a low-height package, such as a flat-pack or SOIC) is mounted on a very small flexible printed circuit board, which fits inside the container. Laterally spaced from the integrated circuit, on the other end of the small flexible board, the board end is sandwiched between a battery and a piece of elastic conductive material (such as conductive plastic foam). Thus, the battery is connected between one face of the container and a power conductor on the board. The piece of elastic conductive material makes contact between a data trace on the board and the other face of the container. Another trace on the board makes contact directly to the container face on which the battery's ground terminal is connected. Thus, simple wiring on the small board, using through-hole vias, suffices to route power, ground, and data lines to the integrated circuit, while providing a sealed durable package with two external contacts.

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patent: 4426159 (1984-01-01), Kosaka et al.
patent: 4982371 (1991-01-01), Bolan et al.

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