PFRA.050

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PTC Resettable Fuses are devices that can detect overcurrent faults in an electronic circuit and reset themselves after the fault has cleared. The PFRA.050 is a 1.5A resettable fuse that is used in many products such as automotive, consumer electronics, industrial, medical, and telecom applications. It offers a low profile design with both lead-free and RoHS compliant options.

The PFRA.050 is designed with a positive temperature coefficient (PTC) thermistor, which is a solid-state element that has a positive temperature coefficient of resistance. When the temperature of the element increases, the resistance of the element also increases. When the current through the element reaches a certain level, the resistance of the element increases quickly, resulting in a rapid decrease in current through the element. This acts as a “self-protection” mechanism that shuts down the circuit quickly and completely.

When this happens, the PTC element will quickly turn off the circuit and remain off until the fault is cleared and the temperature of the element returns to its normal level. Once this happens, the resettable fuse will immediately reset itself and the circuit will start running again. The reset time is typically very short; usually only a few milliseconds.

The PFRA.050 has been designed to operate over a temperature range of -40°C to +85°C in both steady-state and transient conditions. The device is also able to withstand typical overvoltage conditions that occur in applications such as high-voltage, automotive, and industrial environments. The low profile design of the PFRA.050 makes it an ideal choice for space-constrained applications, such as hand-held devices.

In summary, the PFRA.050 is a 1.5A resettable fuse with a positive temperature coefficient thermistor that is used in many electronics applications. It offers a low profile design that can withstand high temperatures and transient conditions. The device can be used in both lead-free and RoHS compliant designs in space-constrained applications.

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