Application characteristics of TVS transient voltage suppression diode principle TVS transistor

TVS - Short for Transient Voltage Suppressor Diode. TV is a voltage limiting overvoltage protection device in the form of a diode. When the two poles of TVS are subjected to reverse transient high-energy shocks, it can convert the high impedance between the two poles into low impedance at a speed of 10-12 seconds, absorbing up to several kilowatts of surge power, and clamping the voltage between the two poles at a predetermined value, effectively protecting precision components in electronic circuits from damage caused by surge pulses. In the design of SFP optical module, OLT equipment, Ethernet switch and other network products, they are often used as protective devices to protect products and absorb static electricity.
Features:
(1) Fast response speed (1ps);
(2) High transient power;
(3) Low leakage current;
(4) Small breakdown voltage deviation (5%);
(5) Strong clamping ability, etc;
(6) Strong ability to withstand surge and suppress voltage.
They are widely used in intelligent onu, communication optical module, optical fiber module, sfp optical module, olt equipment, Ethernet switch, computer system, communication equipment, AC/DC power supply, automobile, electronic ballast, household appliances, instruments (watt hour meter), RS232/422/423/485, I/O, LAN, ISDN, ADSL, USB, MP3, PDAS, GPS, CDMA, GSM, digital camera protection, common mode/differential mode protection RF coupling/IC drive receiving protection, motor electromagnetic interference suppression, audio/video input, sensor/transmission, industrial control circuit, relay, contactor noise suppression, and other fields. By category, it can be divided into the following two points:
(1) According to polarity, it can be divided into three types: unipolar and bipolar;
(2) According to purpose: it can be divided into general-purpose devices suitable for various circuits and specialized devices suitable for special circuits. For example, various AC voltage protectors, 4-20mA current protectors, data line protectors, coaxial cable protectors, telephone protectors, etc;
(3) According to packaging and internal structure, it can be divided into axial lead diodes, dual inline TVS arrays (suitable for multi line protection), patch type, modular type, and high-power modular type.
TVS can be connected in parallel to the line and can be used for instantaneous surge suppression. Under normal working conditions, TVS presents a high impedance state to the protected components, which does not affect the normal operation of the line. When an abnormal overvoltage pulse exceeds its breakdown voltage, TVS changes from a high impedance state to a low impedance state. A low impedance path is provided to divert the instantaneous current flowing to the protected components to the TVS diode, and the instantaneous surge current is discharged through the TVS tube, while accurately limiting the voltage to a safe level, When the abnormal overvoltage disappears, TVS immediately returns to the high resistance state.
The above is a brief overview of TVS Transient Voltage Suppression Diode Principle and Application Characteristics TVS Tube, which can serve as a reference for everyone. Our company has a strong technical team and can provide professional technical services for customers. At present, our company has diversified products: intelligent onu, communication optical module, optical fiber module, sfp optical module, olt equipment, Ethernet switch and other network equipment. If you need, you can have a deep understanding.