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. 170-9914
Mfr. Part No.V275LA40AP
BrandLittelfuse
£0.274
Each (In a Bag of 500)
Units
473V 275V 369V 710V 100A 140J LA 23mm 6500A 900pF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 538-0783
Mfr. Part No.VDRS07H230BSE
£0.05
Each
Units
360V 230V 300V 600V 10A 30J VDR 9mm 1200A 170pF 35mm 4.9mm - 9 (Dia.) x 35mm
RS Stock No. 851-8335
Mfr. Part No.MOV-14D471K
BrandBourns
£0.35
Each
Units
470V - 385V 775V 50A 125J MOV-14D 16.5mm - 430pF - - 5.4mm 16.5 (Dia.) x 5.4mm
RS Stock No. 289-7187
Mfr. Part No.B72214S0271K101
BrandEPCOS
£0.412
Each (In a Pack of 5)
Units
430V 275V 350V 710V 50A 71J Standard 15.5mm 4500A 440pF - - 5mm 15.5 (Dia.) x 5mm
RS Stock No. 229-056
Mfr. Part No.VDRS10P275BSE
BrandVishay
£0.20
Each (In a Pack of 5)
Units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 173-1279
Mfr. Part No.VDRS10P275BSE
BrandVishay
£0.09
Each (In a Bag of 250)
Units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 538-0761
Mfr. Part No.VDRS10P275BSE
BrandVishay
£0.11
Each
Units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 669-4370
Mfr. Part No.820422711
£0.842
Each (In a Pack of 5)
Units
430V 275V 350V 710V 100A 303J WE-VD 23mm 10000A 860pF - - 5.7mm 23 (Dia.) x 5.7mm
RS Stock No. 171-0002
Mfr. Part No.V275LA20AP
BrandLittelfuse
£0.167
Each (In a Bag of 700)
Units
473V 275V 369V 710V 50A 75J LA 17mm 4500A 450pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 800-7068
Mfr. Part No.V275LA20AP
BrandLittelfuse
£0.361
Each (In a Pack of 10)
Units
473V 275V 369V 710V 50A 75J LA 17mm 4500A 450pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 163-3859
Mfr. Part No.820422711
£0.542
Each (On a Reel of 500)
Units
430V 275V 350V 710V 100A 303J WE-VD 23mm 10000A 860pF - - 5.7mm 23 (Dia.) x 5.7mm
RS Stock No. 266-5390
Mfr. Part No.B72240B0271K001
BrandEPCOS
£22.57
Each
Units
430V 275V 350V 710V 300A 550J HighE - 40000A 2.7nF 60mm 14mm - -
RS Stock No. 167-8504
Mfr. Part No.B72240B0271K001
BrandEPCOS
£20.515
Each (In a Box of 10)
Units
430V 275V 350V 710V 300A 550J HighE - 40000A 2.7nF 60mm 14mm - -
RS Stock No. 289-7301
Mfr. Part No.B72220S0251K101
BrandEPCOS
£0.716
Each (In a Pack of 5)
Units
390V 250V 320V 650V 100A 140J Standard 21.5mm 8000A 700pF - - 5.3mm 21.5 (Dia.) x 5.3mm
RS Stock No. 800-7052
Mfr. Part No.V250LA40AP
BrandLittelfuse
£0.576
Each (In a Pack of 10)
Units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 170-9999
Mfr. Part No.V250LA40AP
BrandLittelfuse
£0.284
Each (In a Bag of 500)
Units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 173-9269
Mfr. Part No.MOV-14D431K
BrandBourns
£0.131
Each (In a Bag of 600)
Units
430V - 350V 710V 50A 115J MOV-14D 16.5mm - 460pF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 170-9908
Mfr. Part No.V150LA10AP
BrandLittelfuse
£0.157
Each (In a Bag of 700)
Units
268V 150V 200V 395V 50A 45J LA 17mm 4500A 800pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 851-8322
Mfr. Part No.MOV-14D431K
BrandBourns
£0.38
Each
Units
430V - 350V 710V 50A 115J MOV-14D 16.5mm - 460pF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 543-4953
Mfr. Part No.V150LA10AP
BrandLittelfuse
£0.422
Each (In a Pack of 5)
Units
268V 150V 200V 395V 50A 45J LA 17mm 4500A 800pF - - 5.6mm 17 (Dia.) x 5.6mm
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