The ceramic ptc thermistor has similar behavior but the resistance variation is not as fast.
Ac resettable fuse.
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10 pcs 72v 400ma radial lead type pptc resettable fuse polyswitch x72 xf040.
The most obvious difference is that ptcs are automatically resettable whereas traditional fuses need to be replaced after they they are tripped.
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Current ratings of up to a few tens of amperes and voltage ratings of up to few tens of volts are feasible.
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Circuit protection ptc resettable fuses are in stock at digikey.
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A resettable fuse or polymeric positive temperature coefficient device pptc is a passive electronic component used to protect against overcurrent faults in electronic circuits the device is also known as a multifuse or polyfuse or polyswitch they are similar in function to ptc thermistors in certain situations but operate on mechanical changes instead of charge carrier effects in semiconductors.
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