IC package having replaceable backup battery

Details IC package having replaceable backup battery IC package having replaceable backup battery

1993-03-22

1994-02-22

James, Andrew J.

Active solid-state devices (e.g., transistors, solid-state diode

Housing or package

257666, 257691, 257692, 257787, 257924, 365228, 365229, H01L 2348, H01L 2302, H01L 2312, G11C 700

Patent

active

052890341

ABSTRACT:
A premolded battery package supports a volatile memory chip and a replaceable backup battery for preserving data in the event of loss of main power supply. The package includes an integrally formed external socket for receiving a replaceable backup battery which can be manually inserted into or removed from the socket after molding encapsulation and metal trim work have been completed. The socket assembly includes an interface battery cavity which permits the negative terminal of a backup battery to engage a negative power finger lead. The positive battery terminal is engaged by a resilient terminal contact portion of a positive finger lead which projects externally of the molded package. The terminal contact portion of the positive power lead serves as a retainer in combination with socket shoulder portions for retaining the backup battery within the socket.

REFERENCES:
patent: Re32200 (1986-07-01), Lee et al.
patent: 4511796 (1985-04-01), Aigo
patent: 4539660 (1985-09-01), Miyauchi et al.
patent: 4645943 (1987-02-01), Smith, Jr. et al.
patent: 4763308 (1988-08-01), Morata
patent: 4823323 (1989-04-01), Higuchi
patent: 5055704 (1991-10-01), Link et al.

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