PFMU.035.2

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PTC Resettable Fuses, also known as PolyFuse, are special components designed to protect electronic devices and circuits against over-current or over-voltage events. PolyFuses are used to limit current or protect from overheating, preventing dangerous events such as fires and explosion.

PTC Resettable Fuses are especially useful in applications where quick resetting of the fuse is desired, such as consumer electronics, communication equipment, office automation products, and automotive components. This type of fuse is designed to automatically restore normal operation after the over-current or over-voltage event has passed, allowing the protected device to continue functioning.

The PTC Resettable Fuse PFMU.035.2 is designed for use in applications where energy must be managed at high temperatures. The fuse has a current rating of 0.35A, a voltage rating of 24V, and a thermal resistance of 7.45 K/W. For applications at higher temperatures, it is capable of withstanding temperatures up to 150ºC without a significant reduction of its characteristics.

The PFMU.035-2 fuse includes two main components: a positive temperature coefficient (PTC) resistor and a ceramic frame. When the fuse is in an over-current or over-current state, the PTC resistor will heat up and quickly increase its resistance. This results in the protection of the device from over-current, since the resistance is high enough to limit the current flow.

When the current is reduced, the PTC resistor begins to cool off and eventually returns to its lower resistance. This allows the current to flow once again and normal operation of the device is restored. Since the resetting is automatic, the user of the device does not need to manually reset the fuse after every over-current or over-voltage event.

The PFMU.035.2 fuse is designed to work with low-voltage, low-power applications in consumer electronics and automotive equipment. It is especially useful for applications with high peak currents and cycling operations, such as communications equipment and automotive electronics.

PTC Resettable Fuses like the PFMU.035.2 are designed to offer both over-current and over-voltage protection for electronic devices. The fuse is able to automatically reset after an overload event, allowing normal operation to resume without manual resetting. Therefore, it is an ideal choice for low-voltage, low-power applications where fast resetting and reliable protection is required.

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