1.5KE200A Circuit Protection

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Transient Voltage Suppressors (TVS) are one of the most critical components in various electronic circuits to protect it from voltage surges. They continuously monitor the circuit voltage, and when an excessive voltage is detected, the device will activate. A TVS diode is designed to work as a bi-directional protection where the current flows to the protected path can be either in an inductive or capacitive manner. The protective effect depends upon the capacitance of the diode.

The 1.5KE200A is a bi-directional TVS diode with excellent clamping capability and surge capability. It is specifically designed to protect 3.3V and 5V bus lines against ESD induced transient over voltages. It is mainly used in personal computers, consumer electronics, portable electronics, telecom, test and measurement equipment, and other applications. It has a maximum breakdown voltage of 200V with a peak pulse power rating of 150W.

The 1.5KE200A has two protection modes: AC and DC. In the AC mode, the 1.5KE200A acts as a bi-directional device and passes the signal current in both directions but has a high threshold voltage (Vcl) applied to protect the circuit. In the DC mode, the 1.5KE200A is configured as a a single-pole, normally-open (SPNO), bi-directional device which prevents reverse flow of current. The 1.5KE200A can be used for both signal and power paths.

The 1.5KE200A diode is formed from two back-to-back Field-Effect Transistors (FETs). When the input signal voltage rises above the level of the diode\'s breakdown voltage, current will start to flow through the circuit and the FETs will be activated. This activation will cause the diode to begin clamping down on the signal current until it is back to the original level. This action effectively protects the circuit from destructive surges. The 1.5KE200A also features integrated thermal and current protection.

To install the 1.5KE200A diode into a circuit, the cathode end of the diode should be connected to the voltage source and the anode should be connected to the ground side of the circuit and other components. The diode should be placed close to the components it is protecting, and the circuit design should be carefully considered in order to ensure that the 1.5KE200A can provide adequate protection. It is also important to note that the diode should only be connected to circuits with voltages up to 200V, and should not be used for circuits with higher voltages.

In conclusion, the 1.5KE200A is a bi-directional TVS diode which is able to provide excellent over voltage protection from ESD-induced transient voltages. Its 2-Mode protection makes it ideal for personal computers, consumer electronics, portable electronics, test & measurement equipment, and telecom applications. The 1.5KE200A should be installed correctly with the proper circuit design consideration for optimal protection.

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