Tantalum capacitor and method of making same

Details Tantalum capacitor and method of making same Tantalum capacitor and method of making same

1989-11-30

1990-07-31

Griffin, Donald A.

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

29 2503, H01G 900

Patent

active

049454528

ABSTRACT:
A method of manufacturing a tantalum capacitor includes compacting tantalum powder about a tantalum anode rod in such manner than the tantalum powder in a region in registry with the tantalum rod is compacted to a density of from about 8 to 10 grams per cc or more, whereas the density of the remaining portions of the tantalum powder mass are compacted to a density of from about 4 to 7 grams per cc. The disclosure further relates to a improved capacitor formed in accordance with the method, as well as to an improved capacitor preform, the capacitor and preform being characterized in that a higher reliability mechanical and electrical connection is effected between the anode rod and the tantalum materials surrounding the rod.

REFERENCES:
patent: 4520430 (1985-05-01), Long et al.
patent: 4791532 (1988-12-01), Gouvernelle et al.

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