POSITIVE TEMPERATURE-COEFFICIENT THERMISTOR

摘要

The present invention enables the passage of a large current and increases the adhesiveness of a thermistor thick film in a positive temperature-coefficient thermistor having an embodiment wherein the thermistor thick film that is a heat source is formed on an insulating ceramic substrate. The positive temperature-coefficient thermistor (1) is provided with: an insulating ceramic substrate (2); a thermistor thick film (3) exhibiting PTC characteristics, comprising a semiconductor ceramic sintered body, and formed on the insulating ceramic substrate (2); and a pair of electrodes (4, 5) that face each other sandwiching at least a portion of the thermistor thick film (3). The electrical resistivity at room temperature of the thermistor thick film (3) is less than 10 kO·cm.