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Varistors

Varistors, or Voltage Dependent Resistors (VDRs), are essential electronic components designed to protect circuits from voltage spikes and surges. They are typically made from metal oxide materials, primarily zinc oxide, which provides them with high resistance to electrical surges. Varistors come in several types, including Metal Oxide Varistors (MOVs), Silicon Carbide Varistors, and Polymeric Varistors, each offering specific features suited for different applications. With their rapid response time, high energy absorption capabilities, and compact size, varistors are widely utilised in electronic devices and power systems.

What are the Potential Benefits of Varistors?

  • Protects electronic circuits from voltage spikes
  • Increases the lifespan of sensitive components
  • Easy integration into various devices
  • Reliable and cost-effective solution

Special Features Include

  • Voltage-dependent resistance for surge protection
  • Fast response time to transient voltages
  • High energy absorption capacity
  • Compact and durable design

Usage Information of Varistors

Varistors are critical in ensuring the safe and reliable operation of various electronic and electrical systems, such as:

  • Power Supply Protection in Electronics
  • Surge Protection in Communication Systems
  • Automotive Electronic Circuit Protection
  • Industrial Control Systems
  • Household Appliances and Power Strips

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Panasonic
Rohs Verified
ERZV14D680, Panasonic
138 In Stock
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£ 0.21
50 +
£ 0.15
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£ 0.12
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ERZV20D471, Panasonic
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1000 +
£ 0.69
Panasonic
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ERZVF2M121, Panasonic
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£ 0.68
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£ 0.64
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£ 0.60
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ERZV07D560, Panasonic
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£ 0.099
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£ 0.076
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£ 0.074
Littelfuse
V251BA60, Littelfuse
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£ 72.95
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£ 70.90
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£ 69.01
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B72207S0750K101, EPCOS
6998 In Stock
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1000 +
£ 0.091
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B72207S0950K101, EPCOS
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£ 0.10
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V320LA40BP, Littelfuse
108 In Stock
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£ 0.60
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£ 0.56
Littelfuse
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V250LA20AP, Littelfuse
1738 In Stock
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£ 0.41
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£ 0.37
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£ 0.35
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V275LA2P, Littelfuse
68 In Stock
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£ 0.12
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£ 0.10
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£ 0.068
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B72210S0500K101, EPCOS
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£ 0.42
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£ 0.39
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£ 0.36
Panasonic
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ERZE10A361, Panasonic
23 In Stock
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£ 0.27
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£ 0.17
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£ 0.16
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ERZV05D390, Panasonic
2998 In Stock
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£ 0.069
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£ 0.066
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£ 0.060
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B72220S0271K101, Epcos
13498 In Stock
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£ 0.38
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V140LA10AP, Littelfuse
1398 In Stock
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£ 0.46
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£ 0.39
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£ 0.35
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B72214S0251K101, Epcos
498 In Stock
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500 +
£ 0.17
Panasonic
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EZJZ0V800AA, Panasonic
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£ 0.075
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£ 0.073
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£ 0.072
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ERZE14A431SC, Panasonic
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£ 0.29
Wurth Elektronik
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8231614A, Wurth Elektronik
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£ 0.21
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8231626A, Wurth Elektronik
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£ 0.21
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8231726A, Wurth Elektronik
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£ 0.16
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B72205S0250K101, EPCOS
998 In Stock
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1000 +
£ 0.087
VDRS07H275BSE, Vishay
1398 In Stock
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£ 0.38
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£ 0.29
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£ 0.27
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VDRS05C460BSE, Vishay
868 In Stock
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£ 0.81
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£ 0.67
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£ 0.52
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ERZE14A821, Panasonic
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£ 0.44
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£ 0.42
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New Items
New items
SV275K5BL1, Bourns

SV275K5BL1, Bourns

The Bourns SV series is lead style epoxy coated square or rectangular shaped varistor its offers both standard and custom options. It has h extremely high current and energy capabilities and a low clamping voltage, providing an increased level of protection for the transients expected in telecommunication and AC power networks. Smaller nominal dimensions than disc varistor Low clamping voltage Operating ambient temperature range from -40°C to 85°C
New items
B72220S0421K101, EPCOS

B72220S0421K101, EPCOS

Metal Oxide Varistors Standard Series Standard radial epoxy-coated MOV with tinned-copper leads. Tinned copper wire leads with a ceramic body coated with epoxy resin Rated for surge current (8//20 μs) and for energy (2ms) Approvals UL, CSA, VDE
New items
CV150K10BL1, Bourns

CV150K10BL1, Bourns

The Bourns CV series of transient surge suppressors are disc shaped varistor designed to be operated continuously in low and medium voltage electronic system circuits as well as across AC power lines. Due to their radial lead construction, these component require very little mounting space. Operating ambient temperature range from -40°C to 85°C Surge protection Fast response time
New items
ZV20K1206201NIR1HT, Bourns

ZV20K1206201NIR1HT, Bourns

The Bourns ZVHT series low voltage multi-layered varistor with 620pF capacitance is designed to protect sensitive electronic devices against high voltage surges in the low voltage region. Broad range of current and energy handling capabilities Short response time Low sensitivity RoHS compliant
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DV275K3225R2, Bourns

DV275K3225R2, Bourns

The Bourns DV series medium voltage varistor is designed to protect electronic equipment against high voltage surges in the medium voltage region. It is designed for surface mounting and offers excellent transient energy absorption due to improved energy volume distribution and power dissipation. Compared to other Bourns medium voltage SMD varistors, DV series varistors have a very low profile. These transient voltage suppressors cover an operating voltage Vrms from 11 to 300 V, featuring maximum surge currents from 100 A to 1200 A. Package size of 3225 Continuous operating temperature of 125 °C Broad range of current and energy handling capabilities Available in tape and reel packaging for automatic pick-and-place Tolerant of common water cleaning procedures and humidity (climatic category 55/125/56) Leadless chip form zero inductance facilitating extremely fast response time to transient surges
New items
B72650M0251K072, EPCOS

B72650M0251K072, EPCOS

Epcos - Metal Oxide Varistors CU series Surface mount cylindrical varistor encapsulated in thermoplastic to UL94 V0, with tinned copper terminations PSpice models available
New items
IsoM3-250-B-L2, Bourns

IsoM3-250-B-L2, Bourns

The Bourns IsoMOV series varistor introduces hybrid technology that combines the breakthrough surge performance of EdgMOV protection devices with an integrated Gas Discharge Tube (GDT) isolation structure to create the innovative hybrid protection component. By combining the best features of both MOV and GDT technologies into a single component, it achieves high performance as a long life protector with lower capacitance, very low leakage and superb energy handling density. High energy handling density Hybrid (MOV and GDT) design Extended temperature range Ring-wave tolerant Low capacitance UL recognized RoHS compliant
New items
VA100014D300DL, AVX

VA100014D300DL, AVX

Axial Transient Suppressors - TransGuard® Multilayer ZnO ceramic suppressors Ni/Sn Alloy (Plated) Termination Finish
New items
EZJZ1V270EA, Panasonic

EZJZ1V270EA, Panasonic

SMT Transient Suppressors - EZJZ Series Panasonic EZJZ varistors are constructed from advanced semiconductive ceramics and feature excellent ESD suppression. These multilayer varistors are bipolar (having no polarity) and can replace one capacitor and two zener diodes. Ultra low capacitance Large electrostatic resistance to IEC61000-4-2 Level 4 standard Lead-free terminal electrodes ensure great solderability, but flow soldering must be avoided Two arrays for multiple lines Multilayer structure Applications These varistors are suitable for high-speed signal lines and ESD suppression. Suitable applications include HDMI high-speed data busses, USB 2.0 and IEEE1394 interfaces. Standards IEC61000-4-2 Level 4
New items
820571406, Wurth Elektronik

820571406, Wurth Elektronik

Disk Varistors WE-VD series Almost no energy consumption in stand-by mode After a surge impulse the varistor works immediately in normal mode so there is no slip current Excellent absorption at surge impulses Operating temperature:–40 ºC to +85 ºC for types up to 95 VRMS–40 ºC to +125 ºC for types from 115 VRMS Approvals UL, CSA and VDE certified
New items
B72230M0421M401, EPCOS

B72230M0421M401, EPCOS

The TDK Metal oxide varistors is self-protected under abnormal overvoltage conditions and offer high-energy. It has surge current up to 25kA. The operating temperature ranges between -40°C and 85 °C. The applications include power meters, telecom, TVSS, and household appliances. UL1449 recognized, Type 1CA (file number E321126) SCCR rating up to 200 kA Remote Signal Contact Compact size with patented over-moulding design Compliance with UL1449-4 and IEC61643-11
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Varistors and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Varistors or any other product.
This depends on the Varistors individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Varistors and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Varistors.
Yes. We keep updating our stock frequently and if a product like Varistors is not in stock then we will let you know.