Ptc Resettable Fuse Characteristics

Switching type ntc thermistors have.

Ptc resettable fuse characteristics. The ptc resettable fuse is not meant for high power. Both devices function by reacting to the heat generated by the excessive current flow in the circuit. Both polymeric positive temperature coefficient ptc and traditional fuse devices react to heat generated by the excessive current flow in a circuit. The graph below shows the response of the ptc device to temperature.

This form of ptc thermistor is used in heaters sensors and specialised versions are also used as resettable fuses. The fuse element melts open interrupting the current fl ow while the ptc changes from low resistance to high resistance to limit current fl ow. 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. Current ratings of up to a few tens of amperes and voltage ratings of up to few tens of volts are feasible.

Resettable fuse for short protection device features rapid operation to protect the circuit as an abnormal current passing through it operating in a similar to a fuse. Specifications are subject to change without notice. The ceramic ptc thermistor has similar behavior but the resistance variation is not as fast. 03 22 17 surface mount 0603l series 1.

Ptc thermistors can be divided into two types according to their structure and the materials used. 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 graph below shows the response of the ptc device to temperature. The two types of ptc thermistor have very different characteristics.

The fuse element melts open interrupting the current fl ow while the ptc changes from low resistance to high resistance to limit current fl ow. Read more read less. Mf msmf series ptc resettable fuses mf msmf models cannot be wave soldered or hand application including the pptc device characteristics stated in the applicable data sheet. Both devices function by reacting to the heat generated by the excessive current fl ow in the circuit.

Ptc thermistor resettable fuse prg series overview the prg series is available of 2 kind of function resettable fuse and current control.