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Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.


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2022

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What is TVS? What is its function and how it works?


TVS is a high-efficiency protection device in the form of a diode. When the two poles of the TVS diode are impacted by reverse transient high energy, it can change the high impedance between its two poles into low impedance at a speed of the order of 10 to the minus 12 second, absorbing up to several kilowatts of surge power , so that the voltage between the two poles is clamped at a predetermined value, which effectively protects the precision components in the electronic circuit from damage by various surge pulses.

So how does it work?

The transient interference of voltage and current is the main cause of damage to electronic circuits and equipment, which often brings immeasurable losses to people. These disturbances usually come from the start-stop operation of power equipment, instability of the AC power grid, lightning strike disturbance and electrostatic discharge, etc. Transient disturbances are almost everywhere and occur all the time, making people feel hard to guard against. Fortunately, the emergence of a high-efficiency circuit protection device TVS has effectively suppressed transient interference. TVS (Transient Voltage Suppressor) or transient suppression diode is a new product developed on the basis of Zener tube technology. , its circuit symbol is the same as that of an ordinary Zener diode, and its shape is the same as that of an ordinary diode. When both ends of the TVS tube are subjected to an instantaneous high-energy shock, it can operate at a very high speed (up to 1/(10^12) seconds ) abruptly reduces its impedance, while absorbing a large current, clamping the voltage between its two ends at a predetermined value, thereby ensuring that the subsequent circuit components are protected from transient high-energy shocks and damage.

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