High Power Zov Varistor 07d 271k 270V Ф7mm Package Type 10A IP 230V VC

High Power Zov Varistor 07d 271k 270V Ф7mm Package Type 220(198~242)V

DATASHEET:  07D Series_v2306.1.pdf

Remark: Voltage>33V, K is ±10%

Description:

The 07D series radial leaded varistors provides an ideal circuit protection solution for lower DC voltage applications by offering higher surge ratings than ever before available in such small discs.
The maximum peak surge current rating can reach up to 1.75KA (8/20 μs pulse) to protect against high peak surges, including indirect lightning strike interference, system switching transients and abnormal fast transients from the power source.

What is the function of varistor?
The response time of the varistor is ns level, which is faster than the air discharge tube and slightly slower than the TVS tube. Generally, its response speed can meet the requirements for over-voltage protection of electronic circuits. The junction capacitance of a varistor is generally in the order of hundreds to thousands of Pf. In many cases, it is not suitable to be directly used in the protection of high-frequency signal lines. When used in the protection of AC circuits, its large junction capacitance will increase leakage. Current needs to be fully considered when designing protective circuits. The flow capacity of the varistor is larger, but smaller than that of the gas discharge tube.

The biggest feature of the varistor is that when the voltage applied to it is lower than its threshold "UN", the current flowing through it is extremely small, equivalent to a closed valve. When the voltage exceeds UN, its resistance The value becomes smaller, which causes the current flowing through it to surge without much change in the impact on other circuits, thereby reducing the impact of overvoltage on subsequent sensitive circuits. Using this function, abnormal overvoltage that often occurs in the circuit can be suppressed and the circuit can be protected from overvoltage damage.

Varistors are mainly used for transient overvoltage protection, but its volt-ampere characteristics similar to those of semiconductor voltage regulators also allow it to have a variety of circuit component functions, such as:
(1) The stable voltage of DC high-voltage and low-current voltage stabilizing components can be as high as several thousand volts, which is beyond the reach of silicon voltage regulator tubes.
(2) Voltage fluctuation detection component.
(3) DC battery shift component.
(4) Voltage equalizing components.
(5) Fluorescence starting component

Features:

Common classifications of varistor
1. Various diameter sizes: 5mm, 7mm, 10mm, 14mm, 20mm, 25mm, 32mm, 34mm, 40mm, 53mm. According to the size, SOCAY’s conventional naming is 5mm-5D; 10mm-10D, and so on...
2. Wide range of variable resistor voltage range: 18V-1800V
3. Multiple surge withstand capabilities: standard, high surge, ultra-high surge
4. Large current processing and energy absorption capabilities
5. The flow rate of a single unit can reach 70KA or even higher.
6. Fast response time
7. Low leakage current
8. Various lead forms: straight, curved and other special lead types
9. Various packaging forms: bulk, roll packaging, roll packaging

Common classifications of varistor
1. Various diameter sizes: 5mm, 7mm, 10mm, 14mm, 20mm, 25mm, 32mm, 34mm, 40mm, 53mm. According to the size, Semiware’s conventional naming is 5mm-5D; 10mm-10D, and so on...
2. Wide range of variable resistor voltage range: 18V-1800V
3. Multiple surge withstand capabilities: standard, high surge, ultra-high surge
4. Large current processing and energy absorption capabilities
5. The flow rate of a single unit can reach 70KA or even higher.
6. Fast response time
7. Low leakage current
8. Various lead forms: straight, curved and other special lead types
9. Various packaging forms: bulk, roll packaging, roll packaging