PRG21BC2R2MM1RA

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PTC (positive temperature coefficient) resettable fuses are widely used in a variety of electronic products, including smartphones, tablets, PCs, and other devices. They are used to protect against electrical spikes and overcurrents, and to provide thermal overload protection.

The PRG21BC2R2MM1RA is a PTC resettable fuse with a wide application field. It is designed for electronic equipment requiring a high level of performance and reliability. It helps to prevent damage to the device from electrical surges, and provides short circuit protection. It is also capable of absorbing high inrush currents, and is triggered to open the circuit when an overcurrent situation occurs and the temperature exceeds the set value.

The PRG21BC2R2MM1RA has a rated current of 2A and a hold current of 1.2A. It has a thermal resistance of 23°C/W and a maximum temperature of 110°C. It has a reset time of 2 seconds and is suitable for use in temperatures between -55°C and +125°C. It has a solderable connection and its body is made of a flame retardant epoxy material.

The working principle of the PRG21BC2R2MM1RA is simple but effective. It operates on the basis of a PTC thermistor, which has a positive temperature coefficient. The thermistor is connected in series with the circuit and its resistance increases when the temperature rises. In the event of an overcurrent the temperature will rise accordingly, and the increased resistance caused by the warm thermistor will restrict the current flow until the current falls below the set value. The thermistor then cools, its resistance reduces and the circuit is reset.

The PRG21BC2R2MM1RA is an ideal component for applications that require a high level of safety and reliability. Its quick response time and low thermal resistance make it well suited for protecting electronic circuits from electrical surges and short circuits. It is also capable of absorbing high inrush currents, making it ideal for sensitive electronic applications.

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