0ZRM0125FF1A

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PTC resettable fuses are becoming increasingly popular in many applications to provide protection against overcurrents. A PTC resettable fuse is made up of a PTC thermistor, an inductor, and a diode. The fuse provides short circuit protection and typically features a low impedance, low impedance-temperature rise characteristic and a high trip current setting for fast response.

The 0ZRM0125FF1A PTC resettable fuse is designed to provide overcurrent protection for a wide range of applications, including automotive, consumer electronics, telecom, medical equipment, home appliances, and industrial power systems. The device features a high current rating of 35A, a low operating temperature range of -40°C to +125°C, and a thermally enhanced lead frame. 0ZRM0125FF1A has a wide variety of voltage ratings, from 5V to 60V.

In terms of working principle, 0ZRM0125FF1A is based on the thermistor technology, a form of resistive heating device which is used to detect excessive current. The PTC thermistor is typically composed of a semiconductor with a positive temperature coefficient of resistance (cop), which means that it increases in resistance when heated. When an overcurrent is detected, the PTC thermistor heats up, causing a change in the temperature of the device which triggers an imbalance in the device’s electrical circuit. This imbalance causes an increase in the resistance of the PTC thermistor which limits the overcurrent, preventing it from exceeding the rated current of the device.

Besides, PTC resettable fuses are also equipped with a time-delay fuse, which allows for temperature compensation and protection against overloads. It is essential for a PTC resettable fuse to have a time-delay fuse because it helps to ensure that the device does not trip too quickly in the event of an overcurrent. This time-delay fuse is connected to a diode in the circuit, which allows current to pass through only in one direction.

0ZRM0125FF1A is a great solution for providing reliable short circuit protection for applications such as automotive electronics, consumer electronics, telecom, medical equipment, home appliances, and industrial equipment. With a high current rating, low operating temperature range, and thermally enhanced lead frame, 0ZRM0125FF1A is an ideal choice for a wide range of protection and safety applications.

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