Can TVS diode be used as a voltage regulator diode?

Date:2024-09-26 Categories:Product knowledge Hits:237 From: Guangdong Youfeng Microelectronics Co., Ltd(YFW)


The issue of replacing diodes is what engineers most want to know.
TVS diode is a device made by semiconductor technology that integrates a single PN junction or multiple PN junctions. It is a new type of high-efficiency overvoltage surge protection device and is widely used in overvoltage protection of sensitive electronic components. When an abnormal overvoltage occurs in the circuit and reaches the breakdown voltage of the TVS, the TVS quickly transitions from a high resistance state to a low resistance state, releasing the instantaneous overcurrent caused by the abnormal overvoltage to ground, while clamping the abnormal overvoltage at a lower level, thereby protecting the subsequent circuit from damage caused by the abnormal overvoltage. After the abnormal overvoltage disappears, the TVS resistance value returns to a high resistance state. When the circuit is working normally, TVS is in a high impedance state, which does not affect the normal operation of the circuit.
Zener diode, also known as voltage regulator, is a surface junction silicon semiconductor diode manufactured using special processes. After being reverse broken down, although the reverse breakdown current flowing through the voltage regulator changes greatly, the voltage at both ends remains almost unchanged. In practical applications, this characteristic is often used for voltage stabilization to obtain reference voltage and for level transfer. It is widely used in voltage stabilization power supplies, electronic igniters, DC level shifting, limiting circuits, overvoltage protection circuits, compensation circuits, and so on.

TVS diodes and voltage regulators are two completely different diodes with completely different functions and roles, and cannot be replaced by each other!


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