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. 106-9899
Mfr. Part No.ERZV14D470
BrandPanasonic
£0.145
Each (In a Bag of 1000)
Units
47V 30V 38V 93V - - ZNR - 2000A 6.75nF - - - 15.5 (Dia.) x 5mm
RS Stock No. 106-9895
Mfr. Part No.ERZV10D471
BrandPanasonic
£123.51
1 Bag of 1000
Bag(s)
470V 300V 385V 775V - - ZNR - 3500A 230pF - - - 11.5 (Dia.) x 6.2mm
RS Stock No. 110-1929
Mfr. Part No.ERZV14D470
BrandPanasonic
£178.67
1 Bag of 1000
Bag(s)
47V 30V 38V 93V - - ZNR - 2000A 6.75nF - - - 15.5 (Dia.) x 5mm
RS Stock No. 720-9908
Mfr. Part No.ERZV10D471
BrandPanasonic
£0.271
Each (In a Pack of 10)
Units
470V 300V 385V 775V 25A - ZNR 11.5mm 3500A 230pF - - - 11.5 (Dia.) x 6.2mm
RS Stock No. 720-9920
Mfr. Part No.ERZV14D470
BrandPanasonic
£0.392
Each (In a Pack of 5)
Units
47V 30V 38V 93V 10A - ZNR 15.5mm 2000A 6.75nF - - - 15.5 (Dia.) x 5mm
RS Stock No. 439-653
Mfr. Part No.ERZV10D471
BrandPanasonic
£0.206
Each (In a Pack of 10)
Units
470V 300V 385V 775V 25A 85J - 11.5mm 3500A 230pF - - 6.2mm 11.5 (Dia.) x 6.2mm
RS Stock No. 439-499
Mfr. Part No.ERZV05D221
BrandPanasonic
£0.245
Each (In a Pack of 10)
Units
220V 140V 180V 380V 5A 9J - 7mm 800A 110pF - - 4.5mm 7 (Dia.) x 4.5mm
RS Stock No. 106-9863
Mfr. Part No.ERZV05D221
BrandPanasonic
£0.078
Each (In a Bag of 1000)
Units
220V 140V 180V 380V - - ZNR - 800A 110pF - - - 7 (Dia.) x 4.5mm
RS Stock No. 720-9768
Mfr. Part No.ERZV05D221
BrandPanasonic
£0.245
Each (In a Pack of 10)
Units
220V 140V 180V 380V 5A - ZNR 7mm 800A 110pF - - - 7 (Dia.) x 4.5mm
RS Stock No. 720-9989
Mfr. Part No.ERZV20D180
BrandPanasonic
£0.47
Each (In a Pack of 2)
Units
18V 11V 14V 36V 20A 13J ZNR 21.5mm 3000A 40nF - - 5.1mm 21.5 (Dia.) x 5.1mm
RS Stock No. 110-1947
Mfr. Part No.ERZV20D180
BrandPanasonic
£541.69
1 Bag of 1000
Bag(s)
18V 11V 14V 36V - - ZNR - 3000A 40nF - - - 21.5 (Dia.) x 5.1mm
RS Stock No. 226-7873
Mfr. Part No.ERZV07D330
BrandPanasonic
£0.274
Each (In a Pack of 5)
Units
33V 20V 26V 65V 2.5A 2J ZNR 8.5mm 500A 2.9nF - - 4.9mm 8.5 (Dia.) x 4.9mm
RS Stock No. 106-9916
Mfr. Part No.ERZV20D180
BrandPanasonic
£475.93
1 Bag of 1000
Bag(s)
18V 11V 14V 36V - - ZNR - 3000A 40nF - - - 21.5 (Dia.) x 5.1mm
RS Stock No. 785-8758
Mfr. Part No.ERZE07A431
BrandPanasonic
£0.053
Each (In a Pack of 25)
Units
430V 275V 350V 710V 25A 60J ZNR 9mm 2500A 210pF - - 6.5mm 9 x 6.5mm
RS Stock No. 785-8916
Mfr. Part No.ERZE11A511
BrandPanasonic
£0.089
Each (In a Pack of 25)
Units
510V 320V 410V 845V 50A 190J ZNR 13mm 6000A 310pF - - 6.8mm 13 x 6.8mm
RS Stock No. 226-8179
Mfr. Part No.ERZV14D182
BrandPanasonic
£1.814
Each (In a Pack of 5)
Units
1800V 1000V 1465V 2970V 50A 510J ZNR 17mm 5000A - - - 14.4mm 17 (Dia.) x 14.4mm
RS Stock No. 720-9891
Mfr. Part No.ERZV10D361
BrandPanasonic
£0.084
Each (In a Pack of 10)
Units
360V 230V 300V 595V 25A 65J ZNR 11.5mm 3500A 300pF - - 5.7mm 11.5 (Dia.) x 5.7mm
RS Stock No. 110-1978
Mfr. Part No.ERZVF2M471
BrandPanasonic
£982.30
1 Bag of 2000
Bag(s)
470V 300V 385V 775V - - ZNR - 300A - 8mm - - -
RS Stock No. 106-9890
Mfr. Part No.ERZV10D361
BrandPanasonic
£84.64
1 Bag of 1000
Bag(s)
360V 230V 300V 595V - - ZNR - 3500A 300pF - - - 11.5 (Dia.) x 5.7mm
RS Stock No. 110-1920
Mfr. Part No.ERZV10D361
BrandPanasonic
£117.60
1 Bag of 1000
Bag(s)
360V 230V 300V 595V - - ZNR - 3500A 300pF - - - 11.5 (Dia.) x 5.7mm