heater for garage with thermostat_mini cooper fuse box factory

27 2024-08

　　The relationship and characteristics between PPTC and thermistor

　　PPTC， Everyone knows, but many people are confused about thermistors. In fact, according to different Chinese language names, self recovering fuses, polymer switches, overcurrent protection sheets, etc. are also called PTC thermistors.

　　PPTC is a high polymer positive temperature thermistor, belonging to a type of linear component. It is a resistor made of a special material semiconductor. Due to its sensitivity to temperature, its resistance changes with temperature. There are currently two common PTC types: PPTC polymer self-healing fuse and CPTC ceramic fuse.

　　Although both belong to PTC and have the function of maintaining current, there are differences in initial resistance, response speed, and size. PPTC self-healing fuses are smaller in size, lower in resistance, and faster in response than ceramic fuses. Therefore, in terms of selection, PPTC self-healing fuses have a wider range of applications than ceramic fuses.

　　Characteristics of PPTC self recovery fuse:

　　1. Resistance temperature is high, ten to a hundred times larger than metal, and more sensitive to temperature changes;

　　2. The controllable temperature range of the work is wide, and it can be applied to devices at room temperature, high temperature, and low temperature;

　　3. Long sustainable working hours and service life;

　　4. Small size, capable of measuring temperatures that cannot be measured by other temperature measuring devices;

　　5. The application and structure are simple, and it is very convenient to use. The resistance value can be freely selected between 0.1~100k Ω, and it can also be processed and produced;