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. 720-9908
Mfr. Part No.ERZV10D471
BrandPanasonic
PHP19.042
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. 538-0777
Mfr. Part No.VDRS07H250BSE
PHP29.57
Each
units
390V 250V 320V 650V 10A 33J VDR 9mm 1200A 160pF - - 4.9mm 9 (Dia.) x 4.9mm
RS Stock No. 167-0477
Mfr. Part No.B72280B0321K001
BrandEPCOS
PHP13,108.246
Each (In a Box of 5)
units
510V 320V 420V 840V 800A 1600J HighE - 100000A 11nF 135mm 118mm 27.7mm 135 x 118 x 27.7mm
RS Stock No. 170-2871
Mfr. Part No.B72220S0231K101
BrandEPCOS
PHP31.788
Each (On a Reel of 250)
units
360V 230V 300V 595V 100A 130J Standard 21.5mm 8000A 760pF - - 5.1mm 21.5 (Dia.) x 5.1mm
RS Stock No. 543-4953
Mfr. Part No.V150LA10AP
BrandLittelfuse
PHP34.048
Each (In a Pack of 5)
units
268V 150V 200V 395V 50A 45J LA 17mm 4500A 800pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 289-7294
Mfr. Part No.B72220S0231K101
BrandEPCOS
PHP47.848
Each (In a Pack of 5)
units
360V 230V 300V 595V 100A 130J Standard 21.5mm 8000A 760pF - - 5.1mm 21.5 (Dia.) x 5.1mm
RS Stock No. 289-7373
Mfr. Part No.B72220S0621K101
BrandEPCOS
PHP52.994
Each (In a Pack of 5)
units
1000V 625V 825V 1650V 100A 230J Standard 21.5mm 6500A 280pF - - 7.9mm 21.5 (Dia.) x 7.9mm
RS Stock No. 289-7301
Mfr. Part No.B72220S0251K101
BrandEPCOS
PHP47.848
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. 170-2875
Mfr. Part No.B72220S0621K101
BrandEPCOS
PHP37.254
Each (On a Reel of 200)
units
1000V 625V 825V 1650V 100A 230J Standard 21.5mm 6500A 280pF - - 7.9mm 21.5 (Dia.) x 7.9mm
RS Stock No. 106-9895
Mfr. Part No.ERZV10D471
BrandPanasonic
PHP8.075
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 3500A 230pF - - - 11.5 (Dia.) x 6.2mm
RS Stock No. 851-8414
Mfr. Part No.MOV-20D821K
BrandBourns
PHP52.48
Each
units
820V - 670V 1355V 100A 265J MOV-20D 23mm - 500pF - - 7.8mm 23 (Dia.) x 7.8mm
RS Stock No. 226-8056
Mfr. Part No.ERZV07D471
BrandPanasonic
PHP20.58
Each (In a Pack of 5)
units
470V 300V 385V 775V 10A 42J ZNR 8.5mm 1750A 100pF - - 5.8mm 8.5 (Dia.) x 5.8mm
RS Stock No. 769-1515
Mfr. Part No.B72214S0301K101
BrandEPCOS
PHP21.557
Each (In a Pack of 10)
units
470V 300V 385V - 4500A 76J StandarD 15.5mm - 300pF - - 5.2mm 15.5 (Dia.) x 5.2mm
RS Stock No. 721-0043
Mfr. Part No.ERZV20D471
BrandPanasonic
PHP118.265
Each (In a Pack of 2)
units
470V 300V 385V 775V 100A - ZNR 21.5mm 10000A 900pF - - - 21.5 (Dia.) x 6.6mm
RS Stock No. 110-1959
Mfr. Part No.ERZV20D471
BrandPanasonic
PHP46.165
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 10000A 900pF - - - 21.5 (Dia.) x 6.6mm
RS Stock No. 291-3526
Mfr. Part No.B72240B0461K001
BrandEPCOS
PHP1,759.31
Each
units
750V 460V 615V 1240V 300A 1000J HighE - 40000A 1.6nF 60mm 14mm - -
RS Stock No. 289-7250
Mfr. Part No.B72220S0950K101
BrandEPCOS
PHP47.848
Each (In a Pack of 5)
units
150V 95V 125V 250V 100A 50J Standard 21.5mm 6500A 1.83nF - - 4.5mm 21.5 (Dia.) x 4.5mm
RS Stock No. 178-087
Mfr. Part No.VDRS05C275BSE
BrandVishay
PHP23.152
Each (In a Pack of 5)
units
430V 275V 350V 695V 5A 12J VDRS - E 7mm 400A 55pF - - 4.9mm 7 (Dia.) x 4.9mm
RS Stock No. 170-2868
Mfr. Part No.B72220S0950K101
BrandEPCOS
PHP28.088
Each (On a Reel of 250)
units
150V 95V 125V 250V 100A 50J Standard 21.5mm 6500A 1.83nF - - 4.5mm 21.5 (Dia.) x 4.5mm
RS Stock No. 720-9835
Mfr. Part No.ERZV07D391
BrandPanasonic
PHP13.64
Each (In a Pack of 10)
units
390V 250V 320V 650V 10A 35J ZNR 8.5mm 1750A 130pF - - 5.4mm 8.5 (Dia.) x 5.4mm