Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1994-03-28
1996-09-17
Walberg, Teresa J.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
338225D, 338322, 338324, 338327, 338328, H01C 710
Patent
active
055572510
ABSTRACT:
A thermistor includes a plate-like thermistor body and a first and a second electrode formed on each of the main surfaces of said plate-like thermistor body. The first electrode is formed so that its outer periphery reaches the outer peripheral edge of the thermistor and the second electrode is formed to extend from the area encircled by said first electrode onto the first electrode but not reach the outer periphery of the first electrode. The first and second electrodes are made of material which can make an ohmic-contact with the main surface of said thermistor body. The first electrode is made of the material which is hard to generate inter-electrode migration and said second electrode is made of the material which is easy to generate the inter-migration compared with the first electrode. Thus, the thermistor can prevent short-circuiting due to inter-electrode migration without deteriorating the characteristic such as a current capacity.
REFERENCES:
patent: 3296574 (1967-01-01), Tassara
patent: 3793604 (1974-02-01), Duggan et al.
patent: 4251792 (1981-02-01), Ball, Jr.
Easthom Karl
Murata Manufacturing Co. Ltd.
Walberg Teresa J.
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