0ZCF0100AF2A Circuit Protection

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PTC resettable fuses, or polyfuses, are a passive electronic component that protects circuits from over-currents and short circuits. 0ZCF0100AF2A is one of the PTC resettable fuse series.

PTC fuses can be divided into PPTC (Polymer Positive Temperature Coefficient) devices and ESD (Electrostatic Discharge) devices. 0ZCF0100AF2A is a PPTC device, and it is designed to detect an over-current condition and react by rapidly changing from low resistance state to a high resistance state. In this way, the fuse can quickly protect the circuit from damage due to excessive current.

0ZCF0100AF2A can be widely used in IoT devices and industrial control applications, including power-on sequencing, surge protection for AC/DC discontinuous or digital signals, and load protection for low voltage systems. It is also often used in the automotive industry, including powertrain, safety, and convenience systems.

The standard working voltage of 0ZCF0100AF2A is 16V, and its maximum allowed voltage is 20V. The rated current of 0ZCF0100AF2A is 100mA, with a hold current rating of 150mA and a maximum current of 300mA. The device also has a minimum trip time of 1ms and a maximum trip time of 6ms. It has a ceramic body and flame retardant adhesive (UL 94V-0 material).

The working principle of 0ZCF0100AF2A is based on self-heating. The device consists of two electrodes, an anode and a cathode, between which a polymeric layer (thermistor) is placed. As current flows through the thermistor, the thermistor heats up and its resistance increases, thus limiting the flow of current and providing protection to the circuit. When the current drops below a certain level, the self-heating mechanism stops and the thermistor cools, resetting the fuse.

In conclusion, the 0ZCF0100AF2A is a PTC resettable fuse with a wide range of applications in the automotive and IoT industries. Its main function is to detect an over-current condition and protect the circuit from damage by rapidly changing from low resistance state to high resistance state. The device is composed of two electrodes and a thermistor, and relies on self-heating to regulate the current and provide over-current protection.

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