3KASMC17AHE3/57T

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TVS (Transient Voltage Suppression/Transient Voltage Suppressor) diodes are one special type of semiconductor, and 3KASMC17AHE3/57T is one representative. It is an unidirectional bidirectional and rail to rail bidirectional TVS diode array for ESD and surge protection. It effectively provides protection against overvoltage transients or pulses. In this article, application field and working principle of 3KASMC17AHE3/57T will be discussed.

Applications

3KASMC17AHE3/57T is used in various applications, such as USB protection, cell phone protection, telecom/data protection, EFT/Burst protection, and RF protection. Due to the wide range of applications, 3KASMC17AHE3/57T is featured with symmetrical bi-directional ESD capability and high electro-magnetic compatibility for low data rate applications. 3KASMC17AHE3/57T is also rated for up to 28V peak working voltage for ESD and 28V operating voltage.

Working principles

Essentially, TVS diodes are avalanche diodes. In 3KASMC17AHE3/57T, during unpowered or low voltage usage, the avalanche area of the protective diode is activated with at least 3V difference between the signal line and ground line. According to the avalanche breakdown principle, the current carrier will flow from the collector to the emitter and the diode will conduct. The current passing the diode will cause a voltage drop, resulting in the clamping of the voltages, thus providing overvoltage protection.

Furthermore, 3KASMC17AHE3/57T can provide multi-line protection due to its built-in diode array. The diode array offers simultaneous response, allowing the system to respond to different types of overvoltage with equal speed, providing an extra layer of protection from current injection. It also supports various configurations and features interface design, providing protection for sensitive frequencies from hundreds of MHz to several GHz.

In conclusion, 3KASMC17AHE3/57T is a versatile TVS diode with wide applications range from USB, cell phone, telecom/data, EFT/Burst and RF protection. It features rail to rail bidirectional protection, symmetrical bi-directional ESD capability, high electro-magnetic compatibility and multi-line protection due to diode array. Therefore, it provides comprehensive and fast protection against overvoltage transients and pulses.

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