Method of transfer molding electronic packages and packages prod

Semiconductor device manufacturing: process – Packaging or treatment of packaged semiconductor – Metallic housing or support

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438122, H01L 2160

Patent

active

057669864

ABSTRACT:
A printed wiring board with either a pin grid array, a ball grid array, a land grid array, etc. of electrical contacts is prepared with a heat sink in the usual manner. A passage is provided either in the printed wiring board or in the heat sink so that during the transfer molding process, fluid molding compound passes latitudinally under the heat sink into a cavity below the heat sink to encapsulate the package.

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