Unencapsulated solid electrolytic capacitor and method for manuf

Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor

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Details

29 2542, 339275B, H01G 114, H01G 432, H01R 402

Patent

active

045517860

ABSTRACT:
An unencapsulated solid electrolytic capacitor includes a substantially flat, multi-layer solid state capacitor element having an anode lead-out wire welded to a solderable flat anode terminal plate located in the same plane as that of the principal surface of the capacitor element. The terminal plate includes a pair of protrusions formed on a side of the terminal plate remote from the capacitor element. The lead-out wire has an end portion positioned between, but not extending beyond, the protrusions. A method of manufacturing the capacitor includes forming a capacitor element array by aligning respective capacitor element lead-out wires so that they are substantially parallel and are spaced at a predetermined pitch, forming notches at substantially the same locations in the lead-out wires. An anode terminal frame is constructed from a metal strip by forming a plurality of protruding regions extending from one side of the strip at the same pitch as that of the capacitor element array, and by forming in each of the protruding regions an opening defined by an end portion spaced apart from the strip and a pair of narrow branch portions extending between the end portion and the strip. The capacitor element array is then superposed on the anode terminal frame so that the notches are in registration above the openings, and the lead-out wires are welded to the respective end portions. The lead-out wires are then severed at the notches, and the narrow branch portions are cut along a line located between the severed ends of the lead-out wires and the metal strip.

REFERENCES:
patent: 3098955 (1963-07-01), Davis et al.
patent: 3191108 (1965-06-01), Boykin
patent: 3234442 (1966-02-01), Maissel et al.
patent: 3238421 (1966-03-01), Patrick
patent: 3273033 (1966-09-01), Rossmeisl
patent: 3516150 (1970-06-01), Leech
patent: 3689990 (1972-09-01), Nakata et al.

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