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. 538-0761
Mfr. Part No.VDRS10P275BSE
BrandVishay
MYR3.51
Each
units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 106-9928
Mfr. Part No.ERZV20D271
BrandPanasonic
MYR3.342
Each (In a Bag of 1000)
units
270V 175V 225V 455V - - ZNR - 10000A 1.3nF - - - 21.5 (Dia.) x 5.6mm
RS Stock No. 167-0548
Mfr. Part No.B72660M0301K072
BrandEPCOS
MYR3.787
Each (On a Reel of 1000)
units
470V 300Vrms 385V 775V 10A - CU - 1200A 90pF 10.2mm 8mm 4.5mm 10.2 x 8 x 4.5mm
RS Stock No. 110-1943
Mfr. Part No.ERZV14D471
BrandPanasonic
MYR1.071
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 6000A 400pF - - - 15.5 (Dia.) x 6.2mm
RS Stock No. 204-2135
Mfr. Part No.B72214S0131K101
BrandEPCOS
MYR2.194
Each (In a Pack of 5)
units
205V 130V 170V 340V 50A 34J Standard 15.5mm 4500A 650pF - - 4.2mm 15.5 (Dia.) x 4.2mm
RS Stock No. 187-6515
Mfr. Part No.VGAH181216P390DP
BrandAVX
MYR2.352
Each (On a Reel of 1000)
units
24.5V 11V 16V 40V - 2.9J VGAH - 1000 (Peak Current)A 7nF 4.5mm 3.2mm 2mm 4.5 x 3.2 x 2mm
RS Stock No. 202-0510
Mfr. Part No.B72260B0381K001
BrandEPCOS
MYR429.12
Each
units
385V - - 505V - - B722 - - 4.6nF - - - -
RS Stock No. 289-7430
Mfr. Part No.B72205S0300K101
BrandEPCOS
MYR1.64
Each (In a Pack of 5)
units
47V 30V 38V 93V 1A 0.9J Standard 7mm 100A 720pF - - 3.6mm 7 (Dia.) x 3.6mm
RS Stock No. 827-4347
Mfr. Part No.LSP10277P
BrandLittelfuse
MYR79.34
Each
units
277V 320V - - - - LSP10 - 10000A - 64mm 48mm 30mm 64 x 48 x 30mm
RS Stock No. 769-2013
Mfr. Part No.B72660M0171K072
BrandEPCOS
MYR4.13
Each (In a Pack of 5)
units
270V 175Vrms 225V 455V 10A - CU - 1200A 150pF 10.2mm 8mm 3.2mm 10.2 x 8 x 3.2mm
RS Stock No. 800-7080
Mfr. Part No.V320LA40BP
BrandLittelfuse
MYR2.71
Each (In a Pack of 10)
units
540V 320V 420V 810V 100A 150J LA 23mm 6500A 750pF - - 5.6mm 23 (Dia.) x 5.6mm
New
RS Stock No. 211-1122
Mfr. Part No.ZV20K1206201NIR1
BrandBourns
MYR0.597
Each (On a Reel of 2500)
units
33V 20V 26V 54V 1A - ZV - - 620pF - - - -
RS Stock No. 204-8664
Mfr. Part No.DV60K4032R2
BrandBourns
MYR1.854
Each (On a Reel of 2000)
units
100V - 85V 165V 10A - DV - - 530pF - - - -
RS Stock No. 179-7295
Mfr. Part No.B72225S4381K101
BrandEPCOS
MYR16.29
Each (In a Bag of 5)
units
620V 380V 505V 1025V 150A 600J S25 27.5mm 20000A 1250pF - - 8.3mm 27.5 Dia. x 8.3mm
RS Stock No. 170-2883
Mfr. Part No.B72220S0170K101
BrandEPCOS
MYR2.27
Each (On a Reel of 250)
units
27V 17V 22V 53V 20A 14J Standard 21.5mm 2000A 15.6nF - - 4.8mm 21.5 (Dia.) x 4.8mm
RS Stock No. 179-3834
Mfr. Part No.VDRS07H275BSE
BrandVishay
MYR1.575
Each (In a Box of 250)
units
430V 275V 350V 710V 10A 36J VDRS 9mm 1200A 140pF - - 4.9mm 9 Dia. x 4.9mm
RS Stock No. 720-9939
Mfr. Part No.ERZV14D560
BrandPanasonic
MYR2.13
Each (In a Pack of 5)
units
56V 35V 45V 110V 10A 16J ZNR 15.5mm 2000A 6.5nF - - 5.1mm 15.5 (Dia.) x 5.1mm
RS Stock No. 769-1515
Mfr. Part No.B72214S0301K101
BrandEPCOS
MYR1.766
Each (In a Pack of 10)
units
470V 300V 385V - 4500A 76J StandarD 15.5mm - 300pF - - 5.2mm 15.5 (Dia.) x 5.2mm
New
RS Stock No. 211-1134
Mfr. Part No.ZV25K0805121NIR1
BrandBourns
MYR0.566
Each (On a Tape of 50)
units
39V 25V 31V 65V 1A - ZV - - 260pF - - - -
RS Stock No. 106-9884
Mfr. Part No.ERZV10D560
BrandPanasonic
MYR0.721
Each (In a Bag of 1000)
units
56V 35V 45V 110V - - ZNR - 1000A 3.75nF - - - 11.5 (Dia.) x 5.1mm