Terminal electrodes for multilayer ceramic capacitor and method

Details Terminal electrodes for multilayer ceramic capacitor and method Terminal electrodes for multilayer ceramic capacitor and method

1992-04-23

1993-10-05

Reynolds, Bruce A.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361310, 29 2542, H01G 700, H01G 114

Patent

active

052510948

ABSTRACT:
There is provided terminal electrodes and methods of manufacture thereof which overcome the drawbacks of the prior art multilayer ceramic capacitor, namely, thickened terminal electrodes and size variation (low size precision) thereof. A ceramic main body (11) is provided with internal electrodes (12) therein, and terminal electrodes (13) on a front and a rear sides, and at least one of adjacent four sides. The terminal electrode (13) is formed as a three-layer structure consisting of a first external electrode layer (14) of metal highly adhesive to ceramic, a second external electrode layer (15) of metal having solderability, and a third external electrode layer (16) of metal having solder wettability. The three-layer structure of the terminal electrode is approximately 1 to 3 .mu.m thick.

REFERENCES:
patent: 4584629 (1986-04-01), Garcia et al.
patent: 4811162 (1989-03-01), Maher et al.
patent: 4819128 (1989-04-01), Florian et al.

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