CPTC
PTCR(Positive  Temperature  Coefficient  of  Resistance)is a kind of CPTC which with positive temperature coefficient of Resistance, primarily the ferroelectric material BaTio3 after through the semi-conductor intermingle to show up punchy? PTC effect-the very low resistance value under the normal temperature, with the temperature hoist, the mutation will happen near the curie point, and to cause the change of several orders of magnitude, specific resistance hoist, and to present the high impedance state, it indicates the PTC effect of the materials. Because of the character of PTC thermistor, its widely applied in many fields, such as: post &telecommunication and communication、Home appliance 、autoindustry,etc..  
Advantages 
1．High resistance temperature coefficient of the resistor;
2．The curie temperature of the resistor could be adjust at -40℃to 320℃
3．The resistance value range of the resistor could be choose between 1Ω to10KΩ.
4．Applicable to the wide working voltage range, the peak voltage could reach to 1000V;
5．Can implement the diversified structure;
6．Circuit simply used, and low power consumption.
Application：
To start the electronic ballast and energy saving lamp, use the CPTC thermal resistor.
To start the starter motor、frequency conversion air-conditioner used the CPTC thermal resistor.
Universal link overcurrent protection、SPC telephone exchange use the CPTC thermal resistor.
Colorcast、color display degauss use the CPTC thermal resistor.
Temperature compensation uses the CPTC thermal resistor.