ICTE8HE3_A/C Circuit Protection

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ICTE8HE3_A/C is a TVS (Transient Voltage Suppression) diode. TVS diodes are semiconductor devices designed to protect important electronic systems from transient over voltage events. Properly installed, TVS diodes can protect safety-critical equipment, significantly extend the useful life of expensive devices, and reduce the loss and downtime associated with electrical surges. It is important to understand the application fields and the working principle of TVS diodes to choose the right TVS diode and to install it correctly.

Application Field

TVS diodes are commonly used in a multitude of applications, such as automotive electronics, industrial process control, telecom and data transfer, aerospace/defense, security systems, medical electronics, consumer products, and more. TVS diodes are more often specified in safety-critical applications for their important ability to reduce the risk of electrocution and fire.

TVS diodes are available in a range of different package types that are designed for ease-of-use and application flexibility. Examples of TVS diode packages include the TO-220 package for general purpose applications, the SMALL form factor package for higher Density Designs, and the SMB package for Telecom applications. Each type of package provides a different level of protection and it is important to select the right package for the applicable application.

Working Principle

TVS diodes use a Zener type diode as the sensing element, which is capable of clamping ("shunting") high voltage transients to ground or a known electrical level in accordance with its clamping voltage rating (breakdown voltage). The Zener diode provides a low-impedance path that can be quickly activated when a surge or transient voltage event occurs.

When the transient voltage event reaches the breakdown voltage level of the Zener diode, a large amount of current flows through the diode and the voltage across it is clamped. The amount of current that can be safely handled depends on the power dissipation rating of the diode.

The TVS diode will remain in its conducting state until the transient voltage event is diminished, at which point it will automatically return to its non-conducting state and allow the voltage levels to rise back to nominal levels. The diode can then be reset and will provide protection against subsequent surge events.

Conclusion

ICTE8HE3_A/C is a TVS diode designed to protect important electronic systems from transient over-voltage events. It uses a Zener type diode as the sensing element, and is available in a range of different package types for ease-of-use and application flexibility. Understanding the application fields and the working principle of TVS diodes is important in order to choose the right TVS diode and to install it correctly.

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