Browse Prior Art Database

Four Voltage Low Inductance Ceramic Chip Capacitor

IP.com Disclosure Number: IPCOM000042544D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Feinberg, I: AUTHOR [+3]

Abstract

A ceramic chip capacitor is described which decouples among four different voltages on a substrate and has bidirectional mounting capability. The capacitor has two identical sections, each having 25 internal voltage plates with each voltage plate capable of decoupling between one of four separate voltages. Each plate has at least one tab which is electrically connected to the tabs of identical voltage plates. The orientation of the tabs is such that the capacitor will properly mate with the substrate even if it is rotated 180 degrees from its normal orientation. The separation of the capacitor into two sections improves manufactureability and reliability. As shown in Fig. 1A, capacitor 1 is divided into sections 2 and 3.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 2

Four Voltage Low Inductance Ceramic Chip Capacitor

A ceramic chip capacitor is described which decouples among four different voltages on a substrate and has bidirectional mounting capability. The capacitor has two identical sections, each having 25 internal voltage plates with each voltage plate capable of decoupling between one of four separate voltages. Each plate has at least one tab which is electrically connected to the tabs of identical voltage plates. The orientation of the tabs is such that the capacitor will properly mate with the substrate even if it is rotated 180 degrees from its normal orientation. The separation of the capacitor into two sections improves manufactureability and reliability. As shown in Fig. 1A, capacitor 1 is divided into sections 2 and 3. The letters C, R, T, and E refer to the four different voltage levels that capacitor 1 is used to provide decoupling for. The letters C, R, T, and E represent voltages VCC, VR, VT, and VEE, respectively. The hatched areas in sections 2 and 3, which are directly adjacent to the letters C, R, T, and E, are shorting bars. These shorting bars electrically connect tabs of identical voltage plates. Fig. 1B is a section along line 1B-1B and indicates that each of sections 2 and 3 contain 25 individual internal voltage plates. Fig. 1C, which is a view along section 1C-1C, shows tabs 4, 5, 6, and 7, corresponding to the plates which decouple voltages VCC, VR, VT, and VEE, respectively. Tabs of identical v...