PRG21AR220MS1RK

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PTC Resettable Fuses are a type of over-current protection devices that have multiple applications in today\'s electronic projects. The PRG21AR220MS1RK is a primed device designed to protect circuits from overloads in applications ranging from automotive electronics to consumer-grade electronics.

Resettable fuses are also commonly referred to as Polymeric Positive Temperature Coefficient (PPTC) devices. The device operates by monitoring the current that passes through it, and when the current exceeds a certain level, the device opens up and interrupts the circuit. When the circuit is interrupted, any potential hazards from the power overload are avoided. The PRG21AR220MS1RK device is designed to interrupt the circuit when the current exceeds a maximum of 1.2A.

The main application of the PRG21AR220MS1RK device is in automotive electronics. It can be used to protect components such as ECUs and ECMs from the excessive current caused by short circuits, as well as to protect automobiles from overloads. In addition to its use in automotive electronics, the device can also be used in consumer-grade electronic products, such as phones and tablets.

The working principle of the PRG21AR220MS1RK device is based on a PASS-DIODE circuit. The device is essentially a diode in reverse-bias configuration, which consists of two p-n junctions connected in a series with each other. The current passing through the device is measured via the rate of voltage drop across the diodes. When the current reaches the device\'s limit, the voltage drop across it increases, which triggers the device to open up and interrupt the circuit.

In addition to its use in over-current protection, the PRG21AR220MS1RK device can also be used as a current limiter. The diode configuration of the device allows for it to act as a highly efficient current limiter, which helps to reduce the potential hazard of overloads that can occur in applications. This feature also makes the PRG21AR220MS1RK device an excellent choice for applications that require complete circuit protection.

Overall, the PRG21AR220MS1RK device is a highly versatile and reliable PTC Resettable Fuse that can be used to protect circuits from overloads in multiple applications. The device\'s PASS-DIODE based design allows for it to be used as both an over-current protection device, as well as a current limiter, making it an excellent choice for a variety of applications. In addition, the device is designed to safely interrupt the circuit when the current exceeds a maximum of 1.2A, making it an excellent choice for protecting sensitive electronic components.

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