Screening method for laminated ceramic capacitors

Details Screening method for laminated ceramic capacitors Screening method for laminated ceramic capacitors

2007-04-03

2007-04-03

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C324S501000, C209S574000

Reexamination Certificate

active

10946077

ABSTRACT:
A laminated ceramic capacitor C has a plurality of internal electrodes embedded in a dielectric base substance in a stratified manner, the internal electrodes are caused to conduct to a pair of terminal electrodes provided on an outer surface of the dielectric base substance, and the terminal electrode has an outermost layer containing Sn as a main component. There is provided a step of setting the laminated ceramic capacitor in a temperature environment which is not less than 125° C. and not more than 180° C. and applying a direct-current voltage between the terminal electrodes in order to measure a direct-current insulation resistance. The step of applying the direct-current voltage includes a first step and a second step. A direct-current voltage V1(V/μm) which falls within a range of 20 to 40 (V/μm) is applied at the first step, and a direct-current voltage V2(V) with a rated voltage being taken into consideration is applied at the second step after termination of the first step.

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