Ptc Resettable Fuse

Circuit protection ship same day.

Ptc resettable fuse.

Read more read less. Both devices function by reacting to the heat generated by the excessive current flow in the circuit. Pptc resettable fuses are in stock and ship same day at mouser electronics from industry leading manufacturers mouser is an authorized distributor for many resettable fuse manufacturers including bel bourns eaton littelfuse schurter more. 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.

5160 rivergrade road baldwin park ca 91706 1406 u s a. A resettable fuse also known as a ptc is a resistor that has very unique properties. Current ratings of up to a few tens of amperes and voltage ratings of up to few tens of volts are feasible. Circuit protection ptc resettable fuses are in stock at digikey.

The ptc fuse responds with a physical change that inhibits excess current from traveling through the circuit. The ceramic ptc thermistor has similar behavior but the resistance variation is not as fast. The ptc resettable fuse is not meant for high power. Package size varies from 0402 to 3425 while hold current ranges from 50ma to 7 0a.

Surface mount resettable ptc devices provide overcurrent protection for applications where space is at a premium and resettable protection is desired. The devices generally increase the level of resistance at a specific threshold. Under fault conditions a polymer ptc s resistance will rise exponentially and remain in a tripped state providing continuous overcurrent protection until the fault is removed. Bourns multifuse polymer positive temperature coefficient pptc resettable fuses are overcurrent protection devices used in a wide variety of circuit protection applications.