Heat sinks with staked solderable studs

Details Heat sinks with staked solderable studs Heat sinks with staked solderable studs

1984-11-14

1985-10-01

Larkins, William D.

Electricity: conductors and insulators

Feedthrough or bushing

Compression

174 16HS, H01L 2334, H01L 2340, H01L 2336

Patent

active

045449422

ABSTRACT:
Heat sinks of the type which are fitted onto electronic solid-state devices to maintain acceptable thermal equilibrium conditions are provided with solderable sheet-metal appendages or studs staked onto their relatively cooler portions by way of punching which deforms and flows the heat-sink material into and through shaped openings so as to create sound mechanical interlocking. The studs are oriented for projection through a printed-circuit board, along with leads from the associated electronic device, for wave-soldering into rigidly-secured relation to the board.

REFERENCES:
patent: 3771480 (1973-11-01), Johnson
patent: 4054901 (1977-10-01), Edwards et al.
patent: 4388967 (1983-06-01), Breese
"IERC Transister Heat Dissipator"-Electronic Design-Jan. 4, 1961, p. 114.
IERC Technical Bulletin-"Vertical Mount Dissipators for Plastic Power Semiconductors Save Valuable Board Space", Bulletin 184.

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