Current ratings of up to a few tens of amperes and voltage ratings of up to few tens of volts are feasible.
Ac resettable fuse.
The ceramic ptc thermistor has similar behavior but the resistance variation is not as fast.
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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Nte electronics r59 3a thermal circuit breaker fuse holder type 0 250 quick connect terminal 0 069 ohms 3 amp.
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Whereas a fuse will completely stop the flow of current which may be desired in critical applications after most similar overcurrent event ptcs continue to enable the equiment to function except in.
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Circuit protection ptc resettable fuses are in stock at digikey.
10 pcs 72v 400ma radial lead type pptc resettable fuse polyswitch x72 xf040.
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