选择VRWM高于此电压的TVS二极管。 信号极性 需受保护的信号线是否为单极性(正极或负极)线路?或者是否为双极性线路? 双极性线路需使用双向TVS二极管。对于单极性线路,可使用单向或双向TVS二极管。但一些单向TVS二极管可为负极性信号提供更好的ESD保护。如果即使在有TVS二极管的情况下IC仍...
While IO-Link®transceivers are increasingly designed for robustness, external protection is also typically required to protect the devices and system from transient events such as voltage or current surges. This application note presents guidelines for selecting a TVS diode to be used w...
単極の場合、片方向 (Unidirectional) ・双方向の両者どちらでも選択可能ですが、片方向の製品の方がマイナス側の保護性能が優れていることがあります。ESD保護ダイオードを挿入しても後段のICが破壊する場合、片方向に変更することも検討ください。
TVSダイオード(ESD保護ダイオード)はどのように働きますか? 機器が正常に動作している通常状態(青のライン)と静電気が流入した状態(赤のライン)でTVSダイオードの動作を考えます。 機器の通常状態ではTVSダイオードはオフの状態になっており、寄生容量(接合容量)を持...
Case 1: HDMI 1.4 interface ESD protection element and latch-up effect Re-timer and re-driver are often used in high-speed communication interface to reshape the integrity of signals. The most commonly used are USB and HDMI re-timers, which provide the conversion between protocol...
to it, it may behave very differently when exposed to static electricity than if it were not connected to anything. For example, an ESD strike on an unpowered part may be dissipated by the internal protection diodes. An ESD strike on a powered part, however, may cause internal...
In the lightning protection of the power supply, due to the isolation effect of the discharge tube, almost no leakage current flows through the varistor, which greatly slows down the aging phenomenon of the varistor caused by the long-term leakage current.At the same time, on the premise of...
in a manner to avoid electrostatic damage. To make this a reality, use an ESD protection diode as part of the ESD shielding solution. If this is not an option, use a transient voltage suppressor to prevent ESD-related failures. The best way to do this is to use a non-conductive ...
• Explain the main characteristics of a CAN protection device and how to select the right ESDCAN part number. AN5878 - Rev 2 - November 2022 For further information contact your local STMicroelectronics sales office. www.st.com AN5878 CAN bus overview 1 CAN bus overview 1.1 Topology This...
events faster than most other types of circuit protection devices. They clamp and thus limit voltage to a certain level using a p-n junction that has a larger cross-sectional area than that of a normal diode, allowing the TVS diode to conduct large currents to ground without sustaining ...