热敏电阻分为正温度系数热敏电阻(PTC)、负温度热敏电阻、临界温度热敏电阻三大类。正温度系数热敏电阻简称 PTC,它对温度极为敏感、热惰性很小的钛酸钡(BaTiO8)为主原材料添加微量的钛、锶、铝等化学物经严格加工而成。在工作温度范围内,零功率电阻值随温度升高而增大,变化规律符合指数规律。 Thermistor is divided into positive temperature coefficient thermistor (PTC), negative temperature thermistor, critical temperature thermistor three categories. Positive temperature coefficient thermistor referred to as PTC, it is very sensitive to temperature, thermal inertia is very small barium titanate (BaTiO8) as the main raw material to add trace titanium, strontium, aluminum and other chemicals by the strict processing. In the operating temperature range, the zero-power resistance increases with temperature, the law of change in line with the exponential law.