Method and device for cooling an integrated circuit package

Details Method and device for cooling an integrated circuit package Method and device for cooling an integrated circuit package

1988-12-21

1990-05-08

Tolin, Gerald P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

29840, 165 803, 165185, 357 81, H05K 720

Patent

active

049243527

ABSTRACT:
The invention relates to cooling integrated circuit packages (14) for surface mounting in a hybrid circuit. The invention provides a cooling method which consists in soldering the bottom of the integrated circuit package (14) to one side of the hybrid circuit substrate (10) and in soldering a heat-dissipating peg (30) to its other side. In order to do this, the bottom of the package is provided with a tinnable area and the substrate (10) is provided with two overlying tinnable areas on opposite faces thereof, said areas being put into communication with each other by at least one plated-through hole (31). The peg (30) is pierced by a channel terminating in a capillary which opens out adjacent to the substrate and which leads to at least one solder receptacle (64, 67) opening out into a side wall of the peg, said channel serving to absorb any excess solder from beneath the bottom of the integrated circuit package (14) which might otherwise give rise to short circuiting solder bridges between connection pads or else prevent the integrated circuit package (14) from being pressed adequately against the substrate (10).

REFERENCES:
patent: 4420767 (1983-12-01), Hodge et al.
patent: 4628407 (1986-12-01), August
patent: 4682269 (1987-07-01), Pitasi
Integrated Circuit Package & Heat Sink, Tiffany, IBM Tech. Discl. Bull., vol. 13, No. 1, Jun. 1970, p. unknown.

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