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Elecsound is a manufacturer of trimming potentiometers, pcbs, capacitors, leds and resistors

Varistors

A varistor is an electronic component with a significant non-ohmic current–voltage characteristic. The name is a portmanteau of variable resistor. Varistors are often used to protect circuits against excessive transient voltages by incorporating them into the circuit in such a way that, when triggered, they will shunt the current created by the high voltage away from the sensitive components. A varistor is also known as Voltage Dependent Resistor or VDR. A varistor’s function is to conduct significantly increased current when voltage is excessive.
Specifications:
Zinc oxide varistors
varistor with fast response to the rapidly rising surge voltage
element dia 5,7,10,14,20,25,32,40,53f
Sizes: 14, 20, 25, 32, 40, 53, 60mm, 14s, 20s, 25s, 34s
Steady state AC voltage range (Vm): 130V – 1600V
High peak surge current rating (I tm) 8/20 us pulse: 6500A – 70000A
Single-pulse energy range (Wtm) 2ms square wave: 45J – 3200J
Average power dissipation of transients: < 0.60W – < 2.50W
Operating temperature range: -55 deg. C – +85 deg. C
Storage temperature range: -55 deg. C – +125 deg. C
Hi-pot encapsulation (isolation voltage capability): 2500Vdc
Insulation resistance: 1000M ohms
Maximum voltage-temperature coefficient: < 0.01% / deg. C

ZINC OXIDE VARISTORS

Elecsound Electronics Co., Ltd is a manufacturer of ZINC OXIDE VARISTOR. we offer 5mm, 7mm, 10mm, 14mm and 20mm dipped varistor.
we can offer below size with good price. And we  can make lead free and with many approvals.
5mm Dipped ZINC OXIDE VARISTOR
7mm Dipped ZINC OXIDE VARISTOR
10mm Dipped ZINC OXIDE VARISTOR
14mm Dipped ZINC OXIDE VARISTOR
20mm Dipped ZINC OXIDE VARISTOR

5mm Zinc Oxide Varistors

EV1 – 5mm Zinc Oxide Varistor
Features:
Wide Operating voltage (V1mA) range from 18V~750V
Withstanding Surge Current: 100~800A
Model Size: 5mm
Fast responding to transient over-voltage<25ns
Low Clamping ratio and no following-on current
Rohs Compliant
Application:
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
5mm zinc oxide varistor  
zinc oxide varistor EV1-05D180L 5mm 18VDC
zinc oxide varistor EV1-05D220K 5mm 22VDC
zinc oxide varistor EV1-05D270K 5mm 27VDC
zinc oxide varistor EV1-05D330K 5mm 33VDC
zinc oxide varistor EV1-05D390K 5mm 39VDC
zinc oxide varistor EV1-05D470K 5mm 47VDC
zinc oxide varistor EV1-05D560K 5mm 56VDC
zinc oxide varistor EV1-05D680K 5mm 68VDC
zinc oxide varistor EV1-05D820K 5mm 82VDC
zinc oxide varistor EV1-05D101K 5mm 100VDC
zinc oxide varistor EV1-05D121K 5mm 120VDC
zinc oxide varistor EV1-05D151K 5mm 150VDC
zinc oxide varistor EV1-05D181K 5mm 180VDC
zinc oxide varistor EV1-05D201K 5mm 200VDC
zinc oxide varistor EV1-05D221K 5mm 220VDC
zinc oxide varistor EV1-05D241K 5mm 240VDC
zinc oxide varistor EV1-05D271K 5mm 270VDC
zinc oxide varistor EV1-05D301K 5mm 300VDC
zinc oxide varistor EV1-05D331K 5mm 330VDC
zinc oxide varistor EV1-05D361K 5mm 360VDC
zinc oxide varistor EV1-05D391K 5mm 390VDC
zinc oxide varistor EV1-05D431K 5mm 430VDC
zinc oxide varistor EV1-05D471K 5mm 470VDC
zinc oxide varistor EV1-05D511K 5mm 510VDC
zinc oxide varistor EV1-05D561K 5mm 560VDC
zinc oxide varistor EV1-05D621K 5mm 620VDC
zinc oxide varistor EV1-05D681K 5mm 680VDC
zinc oxide varistor EV1-05D751K 5mm 750VDC

7mm Zinc Oxide Varistors

EV2 – 7mm Zinc Oxide Varistors
Features: Wide Operating voltage (V1mA) range from 18V~820V        
Withstanding Surge Current: 250~1750A       
Model Size: 7mm                                              
Fast responding to transient over-voltage<25ns   
Low Clamping ratio and no following-on current          
Rohs Compliant 
Application:
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
EV2 – 7mm Zinc Oxide Varistor
Features:
Wide Operating voltage (V1mA) range from 18V~820V        
Withstanding Surge Current: 250~1750A       
Fast responding to transient over-voltage<25ns   
Low Clamping ratio and no following-on current
Rohs Compliant
Application:
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption

10mm Zinc Oxide Varistors

EV3 – 10mm Zinc Oxide Varistors
Features:
Wide Operating voltage (V1mA) range from 18V~820V        
Withstanding Surge Current: 250~1750A       
Model Size: 7mm                                              
Fast responding to transient over-voltage<25ns   
Low Clamping ratio and no following-on current          
Rohs Compliant
Application:
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
10mm zinc oxide varistors   
zinc oxide varistor EV3-10D180L 10mm 18VDC
zinc oxide varistor EV3-10D220K 10mm 22VDC
zinc oxide varistor EV3-10D270K 10mm 27VDC
zinc oxide varistor EV3-10D330K 10mm 33VDC
zinc oxide varistor EV3-10D390K 10mm 39VDC
zinc oxide varistor EV3-10D470K 10mm 47VDC
zinc oxide varistor EV3-10D560K 10mm 56VDC
zinc oxide varistor EV3-10D680K 10mm 68VDC
zinc oxide varistor EV3-10D820K 10mm 82VDC
zinc oxide varistor EV3-10D101K 10mm 100VDC
zinc oxide varistor EV3-10D121K 10mm 120VDC
zinc oxide varistor EV3-10D151K 10mm 150VDC
zinc oxide varistor EV3-10D181K 10mm 180VDC
zinc oxide varistor EV3-10D201K 10mm 200VDC
zinc oxide varistor EV3-10D221K 10mm 220VDC
zinc oxide varistor EV3-10D241K 10mm 240VDC
zinc oxide varistor EV3-10D271K 10mm 270VDC
zinc oxide varistor EV3-10D301K 10mm 300VDC
zinc oxide varistor EV3-10D331K 10mm 330VDC
zinc oxide varistor EV3-10D361K 10mm 360VDC
zinc oxide varistor EV3-10D391K 10mm 390VDC
zinc oxide varistor EV3-10D431K 10mm 430VDC
zinc oxide varistor EV3-10D471K 10mm 470VDC
zinc oxide varistor EV3-10D511K 10mm 510VDC
zinc oxide varistor EV3-10D561K 10mm 560VDC
zinc oxide varistor EV3-10D621K 10mm 620VDC
zinc oxide varistor EV3-10D681K 10mm 680VDC
zinc oxide varistor EV3-10D751K 10mm 750VDC
zinc oxide varistor EV3-10D781K 10mm 780VDC
zinc oxide varistor EV3-10D821K 10mm 820VDC
zinc oxide varistor EV3-10D911K 10mm 910VDC
zinc oxide varistor EV3-10D951K 10mm 950VDC
zinc oxide varistor EV3-10D102K 10mm 1000VDC
zinc oxide varistor EV3-10D112K 10mm 1100VDC
zinc oxide varistor EV3-10D182K 10mm 1800VDC

14mm Zinc Oxide Varistors

EV4 – 14mm Zinc Oxide Varistors
Features:
Wide Operating voltage (V1mA) range from 18V~820V        
Withstanding Surge Current: 250~1750A       
Model Size: 7mm                                              
Fast responding to transient over-voltage<25ns   
Low Clamping ratio and no following-on current          
Rohs CompliantApplication:
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
Standard items for 14mm zinc oxide varistor   
zinc oxide varistor EV4-14D180L 14mm 18VDC
zinc oxide varistor EV4-14D220K 14mm 22VDC
zinc oxide varistor EV4-14D270K 14mm 27VDC
zinc oxide varistor EV4-14D330K 14mm 33VDC
zinc oxide varistor EV4-14D390K 14mm 39VDC
zinc oxide varistor EV4-14D470K 14mm 47VDC
zinc oxide varistor EV4-14D560K 14mm 56VDC
zinc oxide varistor EV4-14D680K 14mm 68VDC
zinc oxide varistor EV4-14D820K 14mm 82VDC
zinc oxide varistor EV4-14D101K 14mm 100VDC
zinc oxide varistor EV4-14D121K 14mm 120VDC
zinc oxide varistor EV4-14D151K 14mm 150VDC
zinc oxide varistor EV4-14D181K 14mm 180VDC
zinc oxide varistor EV4-14D201K 14mm 200VDC
zinc oxide varistor EV4-14D221K 14mm 220VDC
zinc oxide varistor EV4-14D241K 14mm 240VDC
zinc oxide varistor EV4-14D271K 14mm 270VDC
zinc oxide varistor EV4-14D301K 14mm 300VDC
zinc oxide varistor EV4-14D331K 14mm 330VDC
zinc oxide varistor EV4-14D361K 14mm 360VDC
zinc oxide varistor EV4-14D391K 14mm 390VDC
zinc oxide varistor EV4-14D431K 14mm 430VDC
zinc oxide varistor EV4-14D471K 14mm 470VDC
zinc oxide varistor EV4-14D511K 14mm 510VDC
zinc oxide varistor EV4-14D561K 14mm 560VDC
zinc oxide varistor EV4-14D621K 14mm 620VDC
zinc oxide varistor EV4-14D681K 14mm 680VDC
zinc oxide varistor EV4-14D751K 14mm 750VDC
zinc oxide varistor EV4-14D781K 14mm 780VDC
zinc oxide varistor EV4-14D821K 14mm 820VDC
zinc oxide varistor EV4-14D911K 14mm 910VDC
zinc oxide varistor EV4-14D951K 14mm 950VDC
zinc oxide varistor EV4-14D102K 14mm 1000VDC
zinc oxide varistor EV4-14D112K 14mm 1100VDC
zinc oxide varistor EV4-14D182K 14mm 1800VDC

20mm Zinc Oxide Varistors

EV5 – 20mm Zinc Oxide Varistors
Features:
Wide Operating voltage (V1mA) range from 18V~820V        
Withstanding Surge Current: 250~1750A       
Model Size: 7mm                                              
Fast responding to transient over-voltage<25ns   
Low Clamping ratio and no following-on current          
Rohs Compliant
Application:
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
20mm zinc oxide varistor  
zinc oxide varistor EV5-20D180L 20mm 18VDC
zinc oxide varistor EV5-20D220K 20mm 22VDC
zinc oxide varistor EV5-20D270K 20mm 27VDC
zinc oxide varistor EV5-20D330K 20mm 33VDC
zinc oxide varistor EV5-20D390K 20mm 39VDC
zinc oxide varistor EV5-20D470K 20mm 47VDC
zinc oxide varistor EV5-20D560K 20mm 56VDC
zinc oxide varistor EV5-20D680K 20mm 68VDC
zinc oxide varistor EV5-20D820K 20mm 82VDC
zinc oxide varistor EV5-20D101K 20mm 100VDC
zinc oxide varistor EV5-20D121K 20mm 120VDC
zinc oxide varistor EV5-20D151K 20mm 150VDC
zinc oxide varistor EV5-20D181K 20mm 180VDC
zinc oxide varistor EV5-20D201K 20mm 200VDC
zinc oxide varistor EV5-20D221K 20mm 220VDC
zinc oxide varistor EV5-20D241K 20mm 240VDC
zinc oxide varistor EV5-20D271K 20mm 270VDC
zinc oxide varistor EV5-20D301K 20mm 300VDC
zinc oxide varistor EV5-20D331K 20mm 330VDC
zinc oxide varistor EV5-20D361K 20mm 360VDC
zinc oxide varistor EV5-20D391K 20mm 390VDC
zinc oxide varistor EV5-20D431K 20mm 430VDC
zinc oxide varistor EV5-20D471K 20mm 470VDC
zinc oxide varistor EV5-20D511K 20mm 510VDC
zinc oxide varistor EV5-20D561K 20mm 560VDC
zinc oxide varistor EV5-20D621K 20mm 620VDC
zinc oxide varistor EV5-20D681K 20mm 680VDC
zinc oxide varistor EV5-20D751K 20mm 750VDC
zinc oxide varistor EV5-20D781K 20mm 780VDC
zinc oxide varistor EV5-20D821K 20mm 820VDC
zinc oxide varistor EV5-20D911K 20mm 910VDC
zinc oxide varistor EV5-20D951K 20mm 950VDC
zinc oxide varistor EV5-20D102K 20mm 1000VDC
zinc oxide varistor EV5-20D112K 20mm 1100VDC
zinc oxide varistor EV5-20D182K 20mm 1800VDC

25mm Zinc Oxide Varistors

EV6 – 25mm Zinc Oxide Varistor
Solutions are best in fast response time and clamping capability application to power Lines Protection,
Large Surge Protection and Telecom Lines Protection
Wide Operating voltage (V1mA) range from 18V~1800V
Withstanding Surge Current: 4500~20000A
Large absorbing transient energy capability
Fast responding to transient over-voltage
Low Clamping ratio and no following-on current
Rohs Compliant
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
zinc oxide varistor  EV6-25D180L 25mm 18VDC
zinc oxide varistor  EV6-25D220K 25mm 22VDC
zinc oxide varistor  EV6-25D270K 25mm 27VDC
zinc oxide varistor  EV6-25D330K 25mm 33VDC
zinc oxide varistor  EV6-25D390K 25mm 39VDC
zinc oxide varistor  EV6-25D470K 25mm 47VDC
zinc oxide varistor  EV6-25D560K 25mm 56VDC
zinc oxide varistor  EV6-25D680K 25mm 68VDC
zinc oxide varistor  EV6-25D820K 25mm 82VDC
zinc oxide varistor  EV6-25D101K 25mm 100VDC
zinc oxide varistor  EV6-25D121K 25mm 120VDC
zinc oxide varistor  EV6-25D151K 25mm 150VDC
zinc oxide varistor  EV6-25D181K 25mm 180VDC
zinc oxide varistor  EV6-25D201K 25mm 200VDC
zinc oxide varistor  EV6-25D221K 25mm 220VDC
zinc oxide varistor  EV6-25D241K 25mm 240VDC
zinc oxide varistor  EV6-25D271K 25mm 270VDC
zinc oxide varistor  EV6-25D301K 25mm 300VDC
zinc oxide varistor  EV6-25D331K 25mm 330VDC
zinc oxide varistor  EV6-25D361K 25mm 360VDC
zinc oxide varistor  EV6-25D391K 25mm 390VDC
zinc oxide varistor  EV6-25D431K 25mm 430VDC
zinc oxide varistor  EV6-25D471K 25mm 470VDC
zinc oxide varistor  EV6-25D511K 25mm 510VDC
zinc oxide varistor  EV6-25D561K 25mm 560VDC
zinc oxide varistor  EV6-25D621K 25mm 620VDC
zinc oxide varistor  EV6-25D681K 25mm 680VDC
zinc oxide varistor  EV6-25D751K 25mm 750VDC
zinc oxide varistor  EV6-25D781K 25mm 780VDC
zinc oxide varistor  EV6-25D821K 25mm 820VDC
zinc oxide varistor  EV6-25D911K 25mm 910VDC
zinc oxide varistor  EV6-25D951K 25mm 950VDC
zinc oxide varistor  EV6-25D102K 25mm 1000VDC
zinc oxide varistor  EV6-25D112K 25mm 1100VDC
zinc oxide varistor  EV6-25D122K 25mm 1200VDC
zinc oxide varistor  EV6-25D142K 25mm 1400VDC
zinc oxide varistor  EV6-25D162K 25mm 1600VDC
zinc oxide varistor  EV6-25D182K 25mm 1800VDC

32mm Zinc Oxide Varistors

EV7 – 32mm Zinc Oxide Varistors
Solutions are best in fast response time and clamping capability application to power Lines Protection,
Large Surge Protection and Telecom Lines Protection
Wide Operating voltage (V1mA) range from 33V~1800V
Withstanding Surge Current: 4500~20000A
Large absorbing transient energy capability
Fast responding to transient over-voltage
Low Clamping ratio and no following-on current
Rohs Compliant
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
zinc oxide varistor  EV7-32D330K 32mm 33VDC
zinc oxide varistor  EV7-32D390K 32mm 39VDC
zinc oxide varistor  EV7-32D470K 32mm 47VDC
zinc oxide varistor  EV7-32D560K 32mm 56VDC
zinc oxide varistor  EV7-32D680K 32mm 68VDC
zinc oxide varistor  EV7-32D820K 32mm 82VDC
zinc oxide varistor  EV7-32D101K 32mm 100VDC
zinc oxide varistor  EV7-32D121K 32mm 120VDC
zinc oxide varistor  EV7-32D151K 32mm 150VDC
zinc oxide varistor  EV7-32D181K 32mm 180VDC
zinc oxide varistor  EV7-32D201K 32mm 200VDC
zinc oxide varistor  EV7-32D221K 32mm 220VDC
zinc oxide varistor  EV7-32D241K 32mm 240VDC
zinc oxide varistor  EV7-32D271K 32mm 270VDC
zinc oxide varistor  EV7-32D301K 32mm 300VDC
zinc oxide varistor  EV7-32D331K 32mm 330VDC
zinc oxide varistor  EV7-32D361K 32mm 360VDC
zinc oxide varistor  EV7-32D391K 32mm 390VDC
zinc oxide varistor  EV7-32D431K 32mm 430VDC
zinc oxide varistor  EV7-32D471K 32mm 470VDC
zinc oxide varistor  EV7-32D511K 32mm 510VDC
zinc oxide varistor  EV7-32D561K 32mm 560VDC
zinc oxide varistor  EV7-32D621K 32mm 620VDC
zinc oxide varistor  EV7-32D681K 32mm 680VDC
zinc oxide varistor  EV7-32D751K 32mm 750VDC
zinc oxide varistor  EV7-32D781K 32mm 780VDC
zinc oxide varistor  EV7-32D821K 32mm 820VDC
zinc oxide varistor  EV7-32D911K 32mm 910VDC
zinc oxide varistor  EV7-32D951K 32mm 950VDC
zinc oxide varistor  EV7-32D102K 32mm 1000VDC
zinc oxide varistor  EV7-32D112K 32mm 1100VDC
zinc oxide varistor  EV7-32D122K 32mm 1200VDC
zinc oxide varistor  EV7-32D142K 32mm 1400VDC
zinc oxide varistor  EV7-32D162K 32mm 1600VDC
zinc oxide varistor  EV7-32D182K 32mm 1800VDC

53mm Zinc Oxide Varistors

EV9 – 53mm Zinc Oxide Varistors
Solutions are best in fast response time and clamping capability application to power Lines Protection,
Large Surge Protection and Telecom Lines Protection
Wide Operating voltage (V1mA) range from 33V~1800V
Withstanding Surge Current: 20000~70000A
Large absorbing transient energy capability
Fast responding to transient over-voltage
Low Clamping ratio and no following-on current
Rohs Compliant
Transistor,Diode, IC, Thyristor or diac semiconductor protection
Surge protection in consumer electronics
Surge protection in industrial electronics
Surge protection in electronic home appliance, gas and petroleum.
Relay and electromangnetic valve surge absorption
zinc oxide varistor  EV9-53D330K 53mm 33VDC
zinc oxide varistor  EV9-53D390K 53mm 39VDC
zinc oxide varistor  EV9-53D470K 53mm 47VDC
zinc oxide varistor  EV9-53D560K 53mm 56VDC
zinc oxide varistor  EV9-53D680K 53mm 68VDC
zinc oxide varistor  EV9-53D820K 53mm 82VDC
zinc oxide varistor  EV9-53D101K 53mm 100VDC
zinc oxide varistor  EV9-53D121K 53mm 120VDC
zinc oxide varistor  EV9-53D151K 53mm 150VDC
zinc oxide varistor  EV9-53D181K 53mm 180VDC
zinc oxide varistor  EV9-53D201K 53mm 200VDC
zinc oxide varistor  EV9-53D221K 53mm 220VDC
zinc oxide varistor  EV9-53D241K 53mm 240VDC
zinc oxide varistor  EV9-53D271K 53mm 270VDC
zinc oxide varistor  EV9-53D301K 53mm 300VDC
zinc oxide varistor  EV9-53D331K 53mm 330VDC
zinc oxide varistor  EV9-53D361K 53mm 360VDC
zinc oxide varistor  EV9-53D391K 53mm 390VDC
zinc oxide varistor  EV9-53D431K 53mm 430VDC
zinc oxide varistor  EV9-53D471K 53mm 470VDC
zinc oxide varistor  EV9-53D511K 53mm 510VDC
zinc oxide varistor  EV9-53D561K 53mm 560VDC
zinc oxide varistor  EV9-53D621K 53mm 620VDC
zinc oxide varistor  EV9-53D681K 53mm 680VDC
zinc oxide varistor  EV9-53D751K 53mm 750VDC
zinc oxide varistor  EV9-53D781K 53mm 780VDC
zinc oxide varistor  EV9-53D821K 53mm 820VDC
zinc oxide varistor  EV9-53D911K 53mm 910VDC
zinc oxide varistor  EV9-53D951K 53mm 950VDC
zinc oxide varistor  EV9-53D102K 53mm 1000VDC
zinc oxide varistor  EV9-53D112K 53mm 1100VDC
zinc oxide varistor  EV9-53D122K 53mm 1200VDC
zinc oxide varistor  EV9-53D142K 53mm 1400VDC
zinc oxide varistor  EV9-53D162K 53mm 1600VDC
zinc oxide varistor  EV9-53D182K 53mm 1800VDC

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