Transient Voltage Suppressor(TVS)

TVS pipe is transient voltage suppressor abbreviation. Its features are: response speed quickly (for); ns level A surge of impact resistance ability more discharge tube and pressure sensitive resistance is poor, the 10/1000 u s wave pulsed power from the 400 W ~ 30 KW, pulse current peak from 0.52 A ~ 544 A; A breakdown voltage from 6.8 V to 550 V series value, facilitate the use of all sorts of different voltage circuit.

characteristics

TVS tube has one-way and two-way cent, one-way TVS pipe of the characteristics and voltage, two-way TVS diode similar characteristics of the tube is equivalent to two diode reverse voltage, the main characteristic parameters series are:

(1) the reverse fault state voltage (by VRWM voltage) and reverse leakage current IR: reverse fault state voltage (up) VRWM said TVS tube voltage not the highest voltage, conduction in this voltage and only small reverse leakage current IR.

(2) the breakdown voltage VBR: TVS tube through a prescribed test current when IT's voltage, which is the conduction of TVS said mark voltage.

(3) pulse current peak IPP: TVS tube allows the 10/1000 u s waves through the maximum peak current (8/20 u s waves peak current about its five times or so), more than the current value may cause permanent damage. In the same series, the higher the breakdown voltage of the pipe by peak current allow smaller.

(4) the biggest ground-clamp voltage VC: TVS tube through the pulse current peak IPP is present on both ends of the when voltage.

(5) of pulse peak power Pm: pulse peak power Pm refers to the pulse wave 10/1000 muon s peak current IPP and maximum ground-clamp VC, that is the product of the voltage Pm = IPP * VC.

6 steady state power P0: TVS tube can also be voltage stabilizer and, at this point, to use a diode with steady state power.

7 the capacitance Cj: and thermistors, TVS tube as the capacitance Cj is larger also, and unidirectional way than the big, the two-way power of the bigger the capacitance.

Transient suppression as TVS diode, is a diode form of highly efficient protection devices. When TVS diode poles of the transient high-energy impact by reverse it to 10 of negative 12 power the scale of seconds, the speed between the poles of the high impedance into a low impedance, absorb up to several kilowatts of power surge, between the polar voltage and gagging is located in a predetermined value, effectively protect the electronic circuit, the precision components from various surge pulse damage. Because it has a fast response time, transient large power and low leakage current, breakdown voltage deviation, ground-clamp voltage easier to control, no damage to the limit, the advantages of small size, have been widely used in the computer system, communication equipment, ac/dc power supply, cars, electronic ballast, household electric appliances, instruments and meters (electricity meter), RS232/422/423/485, I/O, LAN, ISDN, ADSL, USB, MP3, PDAS, GPS, CDMA, GSM, digital camera, the protection of common mode/differential mode protection, RF coupling/IC to drive the receiving protection, motor electromagnetic wave interference suppression, audio/video input, sensors/transmission, industrial control circuit, relays, contactor noise suppression, and other fields.