Electronic device

Details Electronic device Electronic device

1999-04-23

2000-11-21

Kincaid, Kristine

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

3613014, 3613081, 361309, H01G 4008, H01G 430, H01G 220

Patent

active

061512044

ABSTRACT:
An electronic device has an element assembly, in which electronic parts elements are disposed, and external electrodes of metal film which are formed on surfaces of the element assembly of the electronic device so as to extend and connect to the electronic parts elements, respectively. Further, in this electronic device, the external electrode is made up of an anchor layer adhered on the surface of the element assembly of the electronic device, a solder-resist layer formed to cover the anchor layer, and a solder-wettable layer formed to cover a surface of the solder-resistant layer and showing a superior wettability with respect to molten solder, in which the external electrode further includes an intermediate layer provided between the solder-resistant layer and the solder-wettable layer and made of an alloy containing both metal materials forming the solder-resistant layer and the solder-wettable layer.

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patent: 5805409 (1998-09-01), Takahara et al.
patent: 6043973 (2000-03-01), Nagashima et al.

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