Feed-through capacitor

Abstract

Abstract PURPOSE:To prevent connecting solder from re-melting at the time of mounting, by inserting a lead wire terminal composed of wire material of small thermal conductivity into the axial core part of a capacitor element, and soldering the lead wire terminal and a capacitor electrode. CONSTITUTION:Stainless wire, copper coated steel wire, etc., whose thermal conductivity is small are used as the wire material of a lead wire terminal 1. The lead wire 1 is inserted into a hole formed at the center of a capacitor element 5, and a stopper part 2 is fixed to a capacitor electrode 7a of the element 5 via solder 13a. Insulative resin 5 is poured into a metal case 10, and the space in the case 10 is filled with said resin. When this feed-through capacitor is mounted on a printed wiring board and the like, the soldering heat at the time of mounting is scarcely transmitted to the solder 13, because the thermal conductivity of the terminal 1 is small. As a result, the solder 13a can be prevented from re-melting.

Inventors

• 👤 Hironobu Kinoshita
• 👤 木下　浩信
• 👤 Iwao Fukutani
• 👤 福谷　巌

Bibliographic Details