PTC thermistor temperature parameters related to thermal effects
- Nov 05, 2018 -

  PTC thermistor temperature parameters related to thermal effects

  Dissipative coefficient of the delta: the change of the power dissipation in the thermistor and the ratio of the corresponding temperature variation called dissipative coefficient, the unit for W / ℃.

   Dissipation coefficient is a parameter that characterizes the heat exchange capacity of PTC thermistor with surrounding media. It is also one of the most important parameters in the application of PTC components.Under the premise of a certain material formulation and process, the Curie temperature and lift-drag ratio of PTC itself are basically unchanged, while other performance parameters of PTC devices are determined by its structure, shell and heat dissipation conditions.The dissipation coefficient is the comprehensive expression of these conditions.Therefore, the action time and recovery characteristics of PTC components are related to the dissipation coefficient.The dissipation coefficient is more important for the high power heating element, which directly affects the power output. 

   When a voltage is applied to both ends of the PTC thermistor due to power consumption.When the temperature of the resistor body increases gradually and the heat is distributed to the surrounding medium until the temperature of the resistor body is stable, all the power consumed diffuses into the medium.

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