Metal Oxide Varistors

What are they?
Metal Oxide Varistors, more commonly known as ’MOVs’ are devices that provide excellent transient voltage suppression. They are a type of non-linear device that feature similar characteristics to Zener diodes. They are used to protect vulnerable electronic circuits and components from overvoltage conditions that can cause damage. Any potentially destructive overvoltage energy is dissipated as heat.
Construction:
Metal oxide varistors are typically constructed from zinc oxide and combined with small additions of other metal oxides such as cobalt, magnese or bismuth. These materials are sintered into ceramic casings during manufacture. Although MOVs are available in different formats, they are most commonly radial leaded discs.
Applications:
• Suppression of lightning and other high levels of transient energy
• Low voltage power supplies in DC circuits
• Low voltage power supply in automotive applications
• Protection from internal transients within capacitor discharges, relay switching and inductive load switching

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Description Price Varistor Voltage Maximum AC Voltage Rating Maximum DC Voltage Rating Clamping Voltage Clamping Current Energy Series Diameter Maximum Surge Current Capacitance Length Depth Thickness Dimensions
RS Stock No. 2508485409
Mfr. Part No.B32K130
BrandEPCOS
HK$213.40
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RS Stock No. 2552559402
Mfr. Part No.LAD4V3U (1)
HK$186.00
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RS Stock No. 2508485516
Mfr. Part No.B32K150
BrandEPCOS
HK$162.40
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RS Stock No. 2508486575
Mfr. Part No.S20K680
BrandEPCOS
HK$11.62
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RS Stock No. 2508486351
Mfr. Part No.B32K460
BrandEPCOS
HK$177.57
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RS Stock No. 2508485392
Mfr. Part No.S20K130E2
BrandEPCOS
HK$6.86
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RS Stock No. 2508486424
Mfr. Part No.S20K510
BrandEPCOS
HK$12.40
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RS Stock No. 2508485550
Mfr. Part No.S14K175
BrandEPCOS
HK$2.98
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