5KP36 Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are an important component of circuits used for guarding against electrostatic discharge (ESD) and transient heat-spike events. Today, a variety of technologies are being used to make TVS diodes, each having their own pros and cons. One such technology is 5KP36, which offers a finite leakage current and superior reliability characteristics. This article aims to explore the application fields and workings of 5KP36 TVS diodes.

Application Fields:
5KP36 TVS diodes are commonly employed in consumer and industrial electronics, automotive applications, communications equipment, and consumer appliances. They are employed in tandem with other protection devices, such as varistors, for effective ESD protection. 5KP36 TVS diodes are preferred for their high surge capability and low operating voltage, which makes them suitable for low-voltage strategies often employed in many electronics designs these days. Furthermore, these devices can be used for guarding against noise pulses and transient events.

Working Principle:
The 5KP36 TVS diode works on the principle of avalanche breakdown of a PN junction. The device is designed such that its P-N junction has an avalanche breakdown voltage between 6.8 and 8.3 volts, depending on the device type. When the device is presented with a transient voltage that is greater than the breakdown voltage, the carrier concentration in the depletion region increases, ultimately resulting in an avalanche effect. This effect dissipates the transient voltage rapidly onto the device’s terminals.

Once the voltage has been dissipated, the device then behaves like a normal diode characterized by a low leakage current. The 5KP36 TVS diode is unique in that it can withstand surge currents greater than 30 A, which is much higher than the 15 A rating of some other diode technologies. This makes the 5KP36 particularly suitable for use in high current electrostatic discharge protection applications.

In conclusion, 5KP36 TVS diodes offer high surge capability, superior reliability, and low operating voltage. This makes them suitable for a wide variety of applications, such as consumer electronics, automotive electronics, communications equipment, and consumer appliances. Furthermore, their avalanche breakdown voltage of 6.8-8.3 volts and improved surge capability make them particularly useful for ESD and transient protection.

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