- The insulating material is alumina ceramic usually
- Others are possible, such as ceramic, glass, mica and so on.
PTC Element
PTC-01
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Hair straightener
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Hair crimper
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Film covering machine
Notice in appliance
- Its rapid temperature is rising, with small bulk, with high power in the unit area. There is no temperature self-control character, a temperature control circuit is needed. Over-temperature protector is needed for preventing failure of temperature control.
- Single side insulator type consists of noble metal as heating material. It’s long life, no oxygenation. And various temperature coefficients of resistance can be selected.
- Both sides insulator type consists of Mo-Mn alloy as heating material. It has a longer life than wire heaters. It’s with temperature coefficient of + 2000~3000×10-6/℃. The power is changed slightly with temperature changing. Temperature control circuit is needed for controlling the temperature.