WEET WVA Epoxy Varistor, abbreviated as VDR or Varistor, is a special type of resistor device with nonlinear volt ampere characteristics.

WEET WVA Dipped Varistor disc diameter 05D,07D,10D,14D,20D.

WEET WVA Radial Lead Disc Varistors are not true resistors, but rather components with transient voltage suppression function. They generally have no positive or negative polarity, which is different from TVS. When used, they are also connected in parallel with the protected IC or circuit, and the response time of WEET WVA DIP varistor 5D180K diameter 5mm varistors will be slightly slower than TVS.

Let's take a look at the classification of WEET High Power DIP WVA Varistors:

• Distinguish by volt ampere characteristics:

  It can be divided into symmetrical Round Zinc Oxide Varistors (non-polar) and asymmetrical Metal Oxide Varistor China Dipped Radial MOV(polar). The 05D Epoxy Resin Metal Oxide Varistor we usually use have no polarity.

• Differentiate by structure:

  It can be divided into junction type MOV Zinc Oxide Varistor 5mm Disc varistors, bulk type Thru Hole Varistor DIP-2 For Power Adaptor, single particle layer 5D Series Metal Oxide Varistor MOV , and thin film Varistor With Straight Leads or Kink Leads.

• Classified by materials used:

  It can be divided into zinc oxide varistors, silicon carbide varistors, metal oxide varistors, germanium (silicon) varistors, and barium titanate varistors.

What are the uses of varistors?

1.  Transistor, IC, Overvoltage protection for thyristors, semiconductor switching elements, and WEET WVA various electronic and electrical equipment.

2.  Surge absorption and overvoltage protection for household appliances.

3.  Industrial electrical surge absorption.

4. Static discharge and noise signal elimination.

5.  Surge absorption of relays and solenoid valves.

6.  Lightning protection and overvoltage protection for telephone program-controlled switches and communication equipment.

7. Overvoltage protection for residual current switches.

https://www.weetcap.com/pdf/WVA-Zinc-Oxide-Varistors.pdf