PRG21BC0R6MM1RA Circuit Protection

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Passive resettable polymeric Positive Temperature Coefficient (PPTC) fuses are widely used in consumer and industrial electronic products, such as portable power, computers, data centers, power supplies and circuit protection applications. The PRG21BC0R6MM1RA PTC Resettable Fuse is one of the more commonly used PPTC fuses, offering a wide range of applications and working principles.

Application Field of PRG21BC0R6MM1RA PTC Resettable Fuse

The PRG21BC0R6MM1RA PTC Resettable Fuse is widely used in portable consumer, computer, and other power and circuit protection applications. It is also frequently used in industrial, automotive, and commercial applications, such as machine control systems, industrial process control systems, medical equipment, and entertainment electronics. Furthermore, the high temperature polymeric encapsulation is capable of withstanding temperatures up to 120°C and is resistant to vibration and impact.

This fuse features low voltage drops (120mV nominal) and low current interruption characteristics (time-lag fusing),making it suitable for use in modern high-compliance, high-temperature, and high-current applications.

PRG21BC0R6MM1RA PTC resettable fuses also provide superior protection against over-voltage, over-current, and over-temperature conditions.

Working Principle of PRG21BC0R6MM1RA PTC Resettable Fuse

PRG21BC0R6MM1RA PTC resettable fuse works on a principle called "time lag fusing." This means that when the current through the fuse increases, the fuse\'s temperature rises to a point where the internal resistance of the fuse increases. This increased electrical resistance causes the current to drop to levels that are safe and below the triggering current. The device then brings the resistance back to normal and allows regular current flow.

The device also contains a switch that is triggered by the presence of an over-current. This switch then diverts some of the current around the fuse to bypass it and reduce the current flowing through the device. This reduces the temperature of the device and therefore reduces the amount of heat generated.

When the over-current condition is removed, the device cools down and reset itself to its original state. This resetting process may take up to several minutes to complete.

Conclusion

The PRG21BC0R6MM1RA PTC resettable fuse is a versatile device that can be used for a variety of applications. Its time-lag fuse mechanism, low voltage drops, and over-voltage, over-current, and over-temperature protection make it a great choice for protecting consumer and industrial power supplies and circuit protection. defects.

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