SMPC22AN-M3/I Circuit Protection

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Transient Voltage Suppressor (TVS) diodes are a kind of unidirectional voltage-clamp devices used for protection against voltage transients, such as those caused by electrostatic discharge, lightning surges, or inductive load switching. They are also commonly used to protect supply lines and sensitive Integrated circuits (ICs) from over-voltage conditions. The SMPC22AN-M3/I is a bi-directional TVS diode that can protect against both positive and negative voltage transients.

Application Field: SMPC22AN-M3/I is suitable for a wide range of applications, such as industrial electronics, communications, automotive, and consumer electronic devices. It is designed for use in applications with communication and automotive systems that require high surge immunity. It is also suitable for power supply line protection, where it can provide up to 2600W of peak pulse power dissipation and up to 14.4V of clamping voltage.

Working Principle: The working principle of the SMPC22AN-M3/I is based on the use of a Zener diode in series with an avalanche diode. The avalanche diode is used to break down and dissipate any incoming transient voltage. The Zener diode then clamps the voltage lower than the Zener breakdown voltage, thereby protecting the protected line against overvoltage. The device is also protected from transient events by the series protection elements, which can quickly absorb large amounts of power without breaking down.

The SMPC22AN-M3/I features a low Capacitance of only 34pF, as well as fast response time of less than 1ns. Its high power dissipation capability of 2600W enables it to absorb large transient energy without degrading its performance. The device is also designed for easy mounting on printed circuit boards, with its molded plastic case and mounting flange.

In conclusion, the SMPC22AN-M3/I is a bi-directional TVS diode that is designed to provide protection against both positive and negative voltage transients. It is suitable for a wide range of applications, from industrial electronics to automotive, and has a high power dissipation capability and low Capacitance. It also features a fast response time, making it an ideal choice for applications requiring protection against transients.

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