Ptc Resettable Fuse

The ptc resettable fuse is not meant for high power.

Ptc resettable fuse.

A resettable fuse also known as a ptc is a resistor that has very unique properties. The ptc fuse responds with a physical change that inhibits excess current from traveling through the circuit. A positive temperature coefficient ptc resettable fuse protects electronic devices in the event that excessive current or heat is generated. Package size varies from 0402 to 3425 while hold current ranges from 50ma to 7 0a.

Bourns multifuse polymer positive temperature coefficient pptc resettable fuses are overcurrent protection devices used in a wide variety of circuit protection applications. Read more read less. Choosing between a ptc and a fuse overcurrent circuit protection can be accomplished with the use of either a traditional fuse or the more recently developed resettable ptc. Both devices function by reacting to the heat generated by the excessive current flow in the circuit.

For this model if your circuit tries to draw more than 250ma of current if you have a bad short for instance the ptc would trip by heating up. Current ratings of up to a few tens of amperes and voltage ratings of up to few tens of volts are feasible. Surface mount resettable ptc devices provide overcurrent protection for applications where space is at a premium and resettable protection is desired. 5160 rivergrade road baldwin park ca 91706 1406 u s a.

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. The devices generally increase the level of resistance at a specific threshold. Circuit protection ship same day. Circuit protection ptc resettable fuses are in stock at digikey.