Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1993-03-22
1994-12-20
Reynolds, Bruce A.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361309, 361310, 361774, 361782, 174260, H01G 1035
Patent
active
053750357
ABSTRACT:
A capacitor mounting structure for printed circuit boards wherein the capacitor includes first and second terminals which are connected to first and second conductor planes in the printed circuit board. Three vias are mounted in the printed circuit board in a position to be aligned with the middle of the capacitor. A first conductor pad is mounted underneath one end of the capacitor and includes spaced apart extension portions which electrically attach to the first and third via. A second conductor pad is mounted under the other end of the capacitor and includes a central extension portion which attaches to the second or middle via. In this manner, the region available for generation of parasitic inductance is minimized thereby increasing the operating efficiency of the capacitor.
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John Sisler, Eliminating Capacitor From Multilayer PCBS, (7 pages), Jul. 1991-Reprinted from Printed Circuit Design vol. 8, No. 7, Jul. 1991.
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IBM Technical Disclosure Bulletin, vol. 19, No. 8, Jan. 1977 pp. 3046-3047.
Japanese Abstract, vol. 16 No. 554 (E-1293)25, Nov. 1992 & JP-A-03 211 191, Hitachi Ltd. Aug. 3. 1992.
Compaq Computer Corporation
Mills Greogory L.
Reynolds Bruce A.
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