huaju
SPD lightning protection varistor series
SPD varistor manufacturers believe that varistor has strong electrical characteristics and is a very mature electronic component that can be used in various electronic equipment to protect the claws, reduce lightning damage, and help improve the stability of the equipment performance and usage characteristics, it can be used in lightning protection and automotive electrical and ignition systems. The resistance material of the varistor is a semiconductor, so it is a type of semiconductor resistance. 'Zinc oxide' (ZnO) varistors are currently widely used, and their main materials are composed of the divalent element (Zn) and the hexavalent element oxygen (O). So from the material point of view, zinc oxide varistor is a "II-VI group oxide semiconductor".
- Commodity name： SPD lightning protection varistor series
- 产品描述
- 产品规格及参数
-
Introduction to SPD lightning protection varistor series:
SPD varistor manufacturers believe that varistor has strong electrical characteristics and is a very mature electronic component that can be used in various electronic equipment to protect the claws, reduce lightning damage, and help improve the stability of the equipment performance and usage characteristics, it can be used in lightning protection and automotive electrical and ignition systems. The resistance material of the varistor is a semiconductor, so it is a type of semiconductor resistance. 'Zinc oxide' (ZnO) varistors are currently widely used, and their main materials are composed of the divalent element (Zn) and the hexavalent element oxygen (O). So from the material point of view, zinc oxide varistor is a "II-VI group oxide semiconductor".
SPD varistor manufacturers believe that the main feature of a varistor is that when the voltage applied to it is lower than its threshold value 'UN', the current flowing through it is extremely small, equivalent to a closed valve. When the voltage exceeds UN, the current flowing through it surges, equivalent to the valve opening. Through this function, abnormal overvoltage that often occurs in the circuit can be suppressed and the circuit can be protected from overvoltage damage.
SPD varistor manufacturers believe that varistor is a component with transient voltage suppression function and can be used to replace the combination of transient suppression diode, Zener diode and capacitor. Rheostats protect integrated circuits and other devices from damage by electrostatic discharge, surges, and other transient currents such as lightning strikes. ). When using it, just connect the varistor in parallel to the IC or device circuit to be protected. When the voltage is instantly higher than a certain value, the resistance of the varistor will drop rapidly, conducting a large current to protect the IC or electrical equipment.When the voltage is lower than the working voltage value of the varistor, the resistance of the varistor is extremely high and is almost an open circuit, so it will not affect the normal operation of the device or electrical equipment.
SPD varistor manufacturers consider the varistor voltage to be the breakdown voltage or threshold voltage. It refers to the voltage value under a specified current. In most cases, it is the voltage value measured when 1mA DC current flows into the varistor. The varistor voltage range of its products ranges from 10-9000V. The right choice can be made based on specific needs. VAC is the effective value of the rated AC voltage. The selection of the voltage value of ZnO varistor is very important, related to the protection effect and service life.
SPD varistor manufacturers believe that the current carrying capacity, that is, the peak value of the maximum pulse current, is the maximum pulse current value when the ambient temperature is 25°C. For the specified pulse current waveform and number of times, the change in varistor voltage does not exceed 10%. In order to extend the service life of the device, the amplitude of the surge current absorbed by the ZnO varistor should be less than the maximum flux given in the product specification. However, from the perspective of protection effect, the selected flux is required to be larger.
Key words:
SPD lightning protection varistor series
Product inquiry
Note: Please leave your contact information and our professionals will contact you as soon as possible!
Address: Building 2, 126 Tianyuan Middle Road, Jiangning District, Nanjing
Tel: 025-52153215,52153380、52157721