One, explanation
TVS Diodes（TRANSIENT VOLTAGE SUPPRESSOR）A transient voltage suppression diode is a new product developed on the basis of the voltage regulator process. Its circuit symbol is the same as ordinary voltage diode, and its shape is not the same as ordinary diode. When the two ends of the TVS tube are subjected to instantaneous high energy shock, it can reduce its impedance at a very high speed (up to 1*10-12 seconds). At the same time, a large current is absorbed and the voltage between the two ends is clamped on a predetermined value to ensure that the circuit elements behind the circuit are not damaged by the transient high energy impact. The reaction speed of TVS is more than 10e-12s faster than that of the RC circuit, without considering the breakdown voltage VBR of the TVS, the reverse critical voltage VWM, the maximum peak pulse current IPP, the maximum embedded voltage VC and the peak pulse power PP. selection VWM equal to or greater than the circuit voltage, VC is less than the voltage of the protective device, and can measure the best (IPP) or estimate The power of the pulse, the high power TVS.
Two, classification
one-way TVS is used to suppress the reverse
Two-way TVS with communication
Three, characteristics and application of transient voltage suppressor TVS
The transient voltage suppressor (Transient Voltage Suppressor), referred to as TVS, is a high efficient protection device in the form of diode, and some are also TVP, AJTVS, SAJTVS and so on. When the two poles of the TVS diode are subjected to an inverse transient high energy shock, it can change the high impedance between the poles of the two poles to a low impedance at a speed of 10-12 seconds, absorbing the surge power of up to several kilowatts, making the voltage between the poles located in a predetermined value and effectively protecting the precision components in the electronic circuit from a variety of surges. The damage of the pulse.
TVS tube has many advantages, such as quick response time, high transient power, low capacitance, low leakage current, low breakdown voltage, easy control of clamp voltage, no damage limit, small size, easy installation and so on. It has been widely used in various fields, such as computer system, communication equipment, consumer electronics, power supply, household appliances and so on.
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