JVA - Zinc Oxide Varistors Specifications
Varistor Voltage (Threshold Voltage)
18V ~ 1800V JVA-Zinc-Oxide-Varistors
Working Voltage
(Max. Allowable Voltage)
AC(rms) 11VAC ~ 1000VAC
DC 14VDC ~ 1465VDC
Peak Current for 8/20 S
Current Wave
General Type 100A ~ 6500A
Hi-energy Type 250A ~ 10 000A
Energy Range For 10/1000 S
Current Wave
General Type 0.4J ~ 625J
Hi-energy Type 0.6J ~ 990J
Operation Ambient Temperature Range
-40 ~ +85
Storage Temperature Range
-55 ~ +125
Insulation Resistance
>1000 M
Hi-Pot (Leads to Coating)
2500 VDC for 1 min.
Typical Response Time
Select varistor
Varistor is a pressure limiting protection device. Can absorb excess voltage, protection of sensitive components in the circuit.
There are many reasons for choosing a varistor.The response time of the varistor is ns level, its response speed, to meet the electronic circuit over-voltage protection requirements. Varistor is mainly used in transient overvoltage protection, similar to the voltammetric characteristics of a semiconductor regulator. Its protection characteristics, impact resistance characteristics of long life, working voltage life, stable performance. Varistor is widely used in household appliances and other electronic products, for over-voltage protection, lightning protection, suppression of inrush current, absorption peak pulse, voltage limiter, high voltage interrupter, noise reduction, the protective effect of semiconductor components and the like.
What is the varistor
The main material of the varistor is the metal oxide (mov), it contains ceramic blocks consisting of zinc oxide particles and a small amount of other metal oxides or polymers. A resistive device having a non-linear voltammetric characteristic, varistor referred to as vdr, the varistor is called a "surge absorber" sometimes referred to as "surge suppressor.
Now the "zinc oxide" (zno) varistor, its main material has divalent elements zinc (zn) and hexavalent element oxygen (o) formed. Mainly used in the circuit to withstand overvoltage when the voltage clamp, absorb the excess voltage to protect sensitive devices.
Characteristics of varistor
Variable resistance voltage range: 18v-1800v
A variety of surge capacity: standard, high surge,
Ultra-high surge
High current handling and energy absorption capacity
Monomer flow can reach 70ka or even higher
Fast response time fast
Low leakage current
Applications: power systems, surge suppressors, security systems, motor protection, automotive electronics systems, household appliances.
What is Zinc Oxide?
Zinc Oxide has the chemical formula ZnO and is an ionic material. Though zinc oxide is found naturally, the majority of it is produced artificially. It is a white or yellowish-white color, and it is water insoluble.
What are the specifications of Zinc Oxide?
Specifications of Zinc Oxide
SI Parameters Percentage UOM
1 Zinc Oxide 99.50 %
2 Acid insoluble 0.15 %
3 Iron as Fe 100 ppm
4 Lead as Pb 500.00 ppm
5 LOI 0.3 %
6 Appearance White amorphous powder
What are its Applications in Ceramic Industries?
Zinc oxide is generally used in the ceramics industry to create glazes .It plays an important role in lowering the melting temperature, equipment requirements, and increasing the color intensity of glazes. In the production of ceramic items, it helps as a fluxing agent.
What are the Uses in Others?
Zinc oxide is noticed in makeup, nail polish, baby lotions. It is also used as an ointment for diaper rash and sun protection products. Cosmetics, rubber, plastics, glass, cement, lubricants, paints, pigments are all made with it. It works as a sunscreen by decreasing or avoiding sunburn and early aging of the skin. It is also used by many big company as a complementary element for their products. Zinc Oxide is used to treat or stop minor skin irritations like burns, cuts, and diaper rash.
What are the Negative Sides?
Unnecessary use of Zinc Oxide can be found allergic reactions like eczema, dizziness, and trouble breathing, though it is very rare. However, if anyone faces any problem, he should get treatment as soon as possible
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