Structure and method for sealing electronic parts

Details Structure and method for sealing electronic parts Structure and method for sealing electronic parts

1978-07-26

1980-09-16

Envall, Jr., Roy N.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

84457, 174DIG8, 310344, 338184, H05K 500

Patent

active

042231779

ABSTRACT:
A base has means for mounting and holding an electronic component, and a plurality of lead-out terminals for establishing electric connection between the electronic component and an external circuit. With the electronic component mounted on the base, an inner casing adapted to cover the electronic component is placed on the base. A tube made of a synthetic resin which will contract when heated is applied to cover the junctions between the base and the inner casing over the entire perimeter of the base. In this condition, the tube is heated to shrink it, so that the junctions are sealed by the tube. Thereafter, an outer casing the bottom of which is fixed on the base as to cover the inner casing and the contracted tube, remaining in intimate contact with the tube.

REFERENCES:
patent: 3603720 (1971-09-01), Rabie
patent: 3609623 (1971-09-01), Zdanys
patent: 3697766 (1972-10-01), Ganter
patent: 3731130 (1973-05-01), Dutta

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