P4KE200CAHB0G Circuit Protection

TVS - Diodes

The P4KE200CAHB0G is a Transient Voltage Suppressor (TVS) diode. It is designed to help protect sensitive electronics from voltage transients, such as electrical surges or spikes caused by lightning or static discharges. The TVS diode is capable of suppressing dangerous voltage transients or surges to levels that will not damage the circuit from lightning transients, electrostatic discharge, inductive switching and power cross events.

Application Field

The P4KE200CAHB0G is designed to protect electronics from incoming surges on power lines, telecom lines, and datalines. It works on 5V and 12V power systems, and may be clamped on other voltages when used in pairs. It is keyed for surface-mounting, making it easy to use. Its low leakage current is an additional benefit, as it reduces the total voltage consumed by the device. The TVS diode may also be used with inductive loads, such as electric motors or solenoids, which require higher currents.

Working Principle

The P4KE200CAHB0G utilizes a Zener-type breakdown mechanism to protect against voltage spikes. It uses a special silicon structure composed of two layers of doped silicon arranged in a sandwich. The current is diverted to the junction area when the device is triggered. This acts as a virtual short circuit, limiting the voltage on the protected circuit. The device can be triggered by either the forward or reverse current, depending on the polarity of the transient.

The P4KE200CAHB0G is a type of \'unidirectional\' diode, meaning that it can protect against transients in only one direction. In this case, it is designed to protect circuits from up to 200 volts. As the transient passes through the junction, an avalanche breakdown occurs, dissipating the excess energy harmlessly and clamping the voltage below the specified level.

Thanks to its robust, low-leakage design, the P4KE200CAHB0G is well-suited for a variety of applications. This TVS diode offers excellent clamping performance and excellent transient protection for electronic circuits.