Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1989-10-27
1991-04-30
Tolin, Gerald P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
165185, 357 81, 361401, 361406, H05K 720
Patent
active
050123866
ABSTRACT:
A package for containing high performance electronic components, such as high speed integrated circuits (ICs). The package bears a substrate of multiple layers having a cavity therein. Leads may be placed within holes in the substrate and soldered or otherwise electrically connected to conductive patterns or layers in the substrate. A thermally conductive insert is attached to one side of the substate. The insert has a pedestal which protrudes through the cavity in the substrate. An electronic component, such as an IC may then be mounted on the pedestal and electrically connected to a conductive metal pattern on one of the layers of the substrate. This assembly may then be coated with a dielectric material to form the package body, leaving the distal ends of the leads and the back side of the insert exposed. Since the IC chip or other component is directly mounted on the insert, waste heat generated by the chip may be directly channeled outside the package through the insert which effectively forms one wall of the package. The exposed leads may be formed into the desired configuration, including shapes suitable for surface mount technology. The use of a multiple layer substate permits the inclusion of ground and power planes for high performance circuits, such as emitter coupled logic (ECL) gate arrays, within the package itself.
REFERENCES:
patent: 4628148 (1986-12-01), Endon
patent: 4630172 (1986-12-01), Stenerson
patent: 4654694 (1987-03-01), Val
patent: 4677526 (1987-06-01), Muehling
patent: 4860165 (1989-08-01), Cassinelli
patent: 4931908 (1990-06-01), Boucard
patent: 4939570 (1990-07-01), Bickford
Lin Paul
McShane Michael B.
Fisher John A.
Motorola Inc.
Tolin Gerald P.
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