当前位置:网站首页>Technical specifications and model selection guidelines for TVs tubes and ESD tubes - recommended by jialichuang
Technical specifications and model selection guidelines for TVs tubes and ESD tubes - recommended by jialichuang
2022-07-05 23:20:00 【ltqshs】
TVS Tube and ESD Technical indicators and model selection guide of pipe
Transient voltage suppressor is abbreviated as TVS, It is a high efficiency protection device in the form of diodes . When TVS When the two poles of the diode are impacted by the reverse transient high energy , It changes the high impedance between its poles into low impedance , Absorb surge power up to several kilowatts , Clamp the voltage between the two poles to a predetermined value , Effectively protect precision components in electronic circuits , Protect from all kinds of surge pulse damage . Because it has fast response time 、 High transient power 、 Low leakage current 、 Small deviation of breakdown voltage 、 The clamping voltage is easy to control 、 No damage limit 、 Small size and other advantages .
ESD Electrostatic protective tube is a common overvoltage 、 Electrostatic protection elements , Protect sensitive circuits in electronic equipment from static electricity .ESD The electrostatic protection tube is connected in parallel in the circuit , When the circuit operates normally ,ESD The electrostatic protection tube is in a high resistance state , It will not affect the normal operation of the line ; When the circuit has abnormal overvoltage and breakdown voltage , Quickly change from high resistance state to low resistance state , Give instantaneous current to provide impedance conduction path , Clamp the abnormal voltage at a safe level , So as to protect the protected IC Or line .
Technical indicators
Ipp: Maximum reverse peak current , The bigger this is , Better product performance .
[email protected]: Clamp voltage , Reach the maximum current Ipp Clamping voltage value at .
Vrwm: Maximum directional operating voltage , Protected signals , Its normal working voltage should not exceed this voltage .
Vbr: Reverse breakdown voltage , When the reverse voltage exceeds this value , The reverse current will increase sharply .
Cj: Junction capacitance , It's usually pF Level , Used on high-speed signal lines , such as USB2.0 Of D+ and D-.
Ppp: The largest one tested Ipp Multiply by the clamping voltage at this point Vc.
Selection Guide
Vrwm It shall not be less than the working voltage of the protected signal . From the point of view of reducing leakage ,Vrwm The higher the working voltage than the protection signal , The smaller the leakage current . In terms of protection strength ,Vrwm The closer to the signal operating voltage , Clamp voltage of the tube Vc The lower the , The better the protection of the signal .
ESD Tube and TVS The protection grade of the pipe should be greater than the protection grade required by the product itself .ESD Tube and TVS Electrostatic clamping voltage of the tube 、 The lower the surge clamp voltage, the better . The protection performance of the pipe is mainly related to the clamping voltage .
TVS Power requirements of tubes : Suppose you want to pass 200V Surge of , The clamping voltage required is 20V within , The internal resistance of surge tester is 2Ω, So the maximum output current is (200V-20V)/2Ω=90A, The tube power should be selected at 90A*20V=1800W Power above . If this TVS The clamping voltage of the tube is less than 20V, The power requirements will be lower .
Save the flow : First look at Vrwm Reverse operating voltage , Look again Vc Clamp voltage , And then look Ppp Peak pulse power .
Product recommendation
Reference to the original :《TVS Tube and ESD Technical indicators and model selection guide of pipe 》
边栏推荐
- Three.js-01 入门
- Hj16 shopping list
- 开关电源Buck电路CCM及DCM工作模式
- 3D reconstruction of point cloud
- What is the process of building a website
- 实现反向代理客户端IP透传
- Expectation, variance and covariance
- 如何快速理解复杂业务,系统思考问题?
- (4) UART application design and simulation verification 2 - TX module design (stateless machine)
- Scala concurrent programming (II) akka
猜你喜欢
Hainan Nuanshen tea recruits warmhearted people: recruitment of the product experience recommender of Nuanshen multi bubble honey orchid single cluster
Go language implementation principle -- map implementation principle
Registration of Electrical Engineering (elementary) examination in 2022 and the latest analysis of Electrical Engineering (elementary)
Three.JS VR看房
视频标准二三事
Initial experience | purchase and activate typora software
Selenium+Pytest自动化测试框架实战
Creative mode 1 - single case mode
Data analysis - Thinking foreshadowing
February 13, 2022-4-symmetric binary tree
随机推荐
Expectation, variance and covariance
regular expression
进击的技术er——自动化
poj 2762 Going from u to v or from v to u? (infer whether it is a weak link diagram)
2:第一章:认识JVM规范1:JVM简介;
Element positioning of Web Automation
Leecode learning notes
(4)UART应用设计及仿真验证2 —— TX模块设计(无状态机)
Sum of two numbers, sum of three numbers (sort + double pointer)
asp.net弹出层实例
Matlab smooth curve connection scatter diagram
3D point cloud slam
From the perspective of quantitative genetics, why do you get the bride price when you get married
There are 14 God note taking methods. Just choose one move to improve your learning and work efficiency by 100 times!
leecode-学习笔记
2: Chapter 1: understanding JVM specification 1: introduction to JVM;
February 13, 2022 -5- maximum depth of binary tree
Selenium+pytest automated test framework practice
Déterminer si un arbre binaire est un arbre binaire complet
UVA – 11637 garbage remembering exam (combination + possibility)