Original title: High energy varistor
What is high energy varistor? The characteristic of high-energy varistor is that when the voltage applied to it is lower than the threshold value "UN", the current flowing through it is very small, which is equivalent to a closed valve; when the voltage exceeds UN, the resistance becomes smaller. In this way, the flowing current increases sharply, and the influence on other circuits changes little, thus reducing the influence of overvoltage on subsequent sensitive circuits. With this function, the abnormal overvoltage in the circuit can be suppressed and the circuit can be protected from voltage damage. There are many specifications of high-energy piezoresistors, such as 05D, 07D, 10D, 14D, 20D, 25D, 32D, etc., among which the piezoresistive voltages of 10D, 14D, 20D, 25D, 32D series of high-energy piezoresistors can reach above kilovolts. Then Xiaobian will generally introduce the parameter specifications under series 10D, 14D and 20D.
The approximate parameter table of high-energy varistor 10D series is as follows
Series model
Type Number pressure sensitive voltage
Varistor Voltage throughput (without standing surge current)
I（A）Standard I（A）High Surge
Standard HighSurge V1mA（V） 1 Time 2 Times 1 Time 2 Times
10D180K 10D180KJ 18（15~21.6） 500 250 2000 1000
10D220K 10D220KJ 22（19.5~26） 500 250 2000 1000
10D270K 10D270KJ 27（24~30） 500 250 2000 1000
10D390K 10D390KJ 33（29.5~36.5） 500 250 2000 1000
10D470K 10D470KJ 39（35~43） 500 250 2000 1000
10D560K 10D560KJ 47（42~54） 500 250 2000 1000
The approximate parameter table of high-energy varistor 14D series is as follows
Series model
Type Number pressure sensitive voltage
Varistor Voltage throughput (without standing surge current)
I（A）Standard I（A）High Surge
Standard HighSurge V1mA（V） 1 Time 2 Times 1 Time 2 Times
14D180K 14D180KJ 18（15~21.6） 1000 500 2000 1000
14D220K 14D220KJ 22（19.5~26） 1000 500 2000 1000
14D270K 14D270KJ 27（24~30） 1000 500 2000 1000
14D330K 14D330KJ 33（29.5~36.5） 1000 500 2000 1000
14D390K 14D390KJ 39（35~43） 1000 500 2000 1000
14D470K 14D470KJ 47（42~54） 1000 500 2000 1000
The approximate parameter table of high-energy varistor 20D series is as follows
Series model
Type Number pressure sensitive voltage
Varistor Voltage throughput (without standing surge current)
I（A）Standard I（A）High Surge
Standard HighSurge V1mA（V） 1 Time 2 Times 1 Time 2 Times
20D180K 20D180KJ 18（15~21.6） 2000 1000 3000 1000
20D220K 20D220KJ 22（19.5~26） 2000 1000 3000 1000
20D270K 20D270KJ 27（24~30） 2000 1000 3000 1000
20D330K 20D330KJ 33（29.5~36.5） 2000 1000 3000 1000
20D390K 20D390KJ 39（35~43） 2000 1000 3000 1000
20D470K 20D470KJ 47（42~54） 2000 1000 3000 1000
The protection function of high energy varistor is introduced as follows
The protection function of high-energy piezoresistors can be repeated many times in most applications, but sometimes disposable protection devices like current fuses can also be made. For example, varistors with short-circuit contacts connected to some current transformer loads. The following problems can be understood by using high-energy piezoresistors.
(1) It is necessary to meet the requirements of different technical standards to distinguish between inductive resistors for power protection and sensitive resistors for signal line and data line protection.
(2) According to the continuous working voltage applied to the high-energy varistor, the varistor used across the power line can be divided into AC or DC, and the aging characteristics of the varistor under these two voltage stresses are different.
(3) According to the different abnormal overvoltage characteristics of high-energy piezoresistors, piezoresistors can be divided into three types: surge suppression type, high-power type and high-energy type.
Characteristics of high energy varistor
High-energy voltage-sensitive voltage range is wide, from several volts to several thousand volts on a single chip;
Low limit voltage (residual voltage);
Fast response speed (ns level);
Voltammetric characteristics of positive and negative symmetry;
Uninterrupted flow;
There are many varieties and specifications (05D, 07D, 10D, 14D, 20D, 25D, 32D, 40D and 53d);
Comply with ROHS directive;
The REACH command;
No bromine and no halogen;
Application of High Energy Varistor
High-energy varistor can be applied to overvoltage protection of transistors, IC, SCR and semiconductor switching elements and various electronic and electrical equipment, surge absorption and overvoltage protection of household appliances, surge absorption of industrial appliances, electrostatic discharge and noise signal elimination, surge absorption of relays and solenoid valves, overvoltage protection of leakage switches, lightning protection and overvoltage protection of telephone program-controlled switches and communication equipment, etc.
The above contents mainly introduce the brief introduction of high-energy piezoresistors, the general parameters of Shuokai brand high-energy piezoresistors, their protection functions, characteristics and applications, etc. If you need high-energy piezoresistors, piezoresistors and other products, please leave a message or call the contact number: 0755-28100016; Massive varistors are available from stock, with specifications of 05D, 07D, 10D, 14D, 20D, 25D, 32D, 40D and 53D.
Shenzhen Shunhai Technology Co., Ltd. is a professional protection device such as fuses, chip fuses, ELLON resistors, chip resistors, chip inductors, integrated inductors, TVS, ESD, PPTC, GDT, TSS, MOS, LDO, etc. The electrostatic tube agent brands are Huade, Saruiwei, Shuokai, Tianer, Guoju, Housheng, Wangquan, TDK, and so on TAIYO, SUNLROP, TDK, LRC, ITE, SAMSUNG, professional sales teams and massive spot stocks provide customers with better service. Welcome to consult and cooperate.
Labels: high-energy varistor, high-energy varistor parameters, high-energy varistor protection function, high-energy varistor characteristics, high-energy varistor applications 
