Hermetically sealed printed circuit board

Details Hermetically sealed printed circuit board Hermetically sealed printed circuit board

1990-10-10

1991-08-20

Thompson, Gregory D.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

174 5051, 357 81, 361388, H05K 720

Patent

active

050419439

ABSTRACT:
The invention relates to an improvement in dielectric type printed circuit boards having wells for mounting active circuit components on a metal substrate for heat dissipation. The improvement resides in a hermetic seal for the printed circuit board which includes a lid hermetically sealed to the top surface of the circuit board, as well as a chemically vapor deposited coating on the dielectric around the active components to prevent seepage of water and oxyen through the lid edges and into the well regions which would otherwise be detrimental to the active components.

REFERENCES:
patent: 3777221 (1973-12-01), Tatusko et al.
patent: 3795975 (1974-03-01), Calhoun et al.
patent: 3918148 (1975-11-01), Magdo et al.
patent: 4197633 (1980-04-01), Lorenze, Jr. et al.
patent: 4554229 (1985-11-01), Small, Jr.
patent: 4630172 (1986-12-01), Stenerson et al.
patent: 4640010 (1987-02-01), Brown
patent: 4773955 (1988-09-01), Mabuchi et al.

Affiliated with

Also associated with

Rating

Hermetically sealed printed circuit board does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hermetically sealed printed circuit board, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hermetically sealed printed circuit board will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1012438