PTC thermistor

Electric heating – Heating devices – With heater-unit housing – casing – or support means

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Details

338 22R, 361 25, H05B 306, H01C 710, H02H 504

Patent

active

056884249

ABSTRACT:
A PTC thermistor comprising a ceramic body having positive temperature coefficient resistivity, a pair of electrode layers provided on both major surfaces of the ceramic body so as to be opposed to each other with the ceramic body interposed therebetween, a pair of metal terminals electrically connected to the electrode layers, and a resin molded portion provided so as to cover side surfaces of the ceramic body and side surfaces of the electrode layers, the metal terminal having a connecting plate electrically connected to the electrode layer and a terminal plate opposed to the connecting plate so that a space is formed between the terminal plate and the connecting plate and connected to the connecting plate by a linking portion, and the resin molded portion being so formed as to expose an outer side surface of the terminal plate of the metal terminal and fill the space between the connecting plate and the terminal plate of the metal terminal.

REFERENCES:
patent: 3584189 (1971-06-01), Marcoux et al.
patent: 3835434 (1974-09-01), Kahn
patent: 3996447 (1976-12-01), Bouffard et al.
patent: 4164000 (1979-08-01), Woods
patent: 4241494 (1980-12-01), Woods
patent: 4493144 (1985-01-01), Woods et al.
patent: 4786888 (1988-11-01), Yondeda et al.
patent: 5162634 (1992-11-01), Kusaka

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