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Posistor-Slide2

A PTC Thermistor is a resistive device made from barium titanate based semiconductor ceramics that maintains an almost constant resistance up to a certain temperature (Curie point). If this Curie temperature is exceeded, a sharp increase in resistance occurs as temperature increases, as shown in the graph. This resistance change is fully reversible. As the part cools off, resistance returns to normal along the same resistance path and without hysteresis.

PTM Published on: 2011-11-02