Process for manufacturing tantalum capacitors

Details Process for manufacturing tantalum capacitors Process for manufacturing tantalum capacitors

1992-03-18

1993-02-02

Griffin, Donald

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

29 2503, 419 2, H01G 905, B22F 100

Patent

active

051842866

ABSTRACT:
A process for manufacturing tantalum capacitors in which microwave energy is used to sinter a tantalum powder compact in order to achieve higher surface area and improved dielectric strength. The process comprises cold pressing tantalum powder with organic binders and lubricants to form a porous compact. After removal of the organics, the tantalum compact is heated to 1300.degree. to 2000.degree. C. by applying microwave radiation. Said compact is then anodized to form a dielectric oxide layer and infiltrated with a conductive material such as MnO.sub.2. Wire leads are then attached to form a capacitor to said capacitor is hermetically packaged to form the finished product.

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