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. 204-1918
Mfr. Part No.B72214S0200K101
BrandEPCOS
MYR2.996
Each (In a Pack of 5)
units
33V 20V 26V 65V 10A 6J Standard 15.5mm 1000A 6.8nF - - 4.6mm 15.5 (Dia.) x 4.6mm
RS Stock No. 785-8761
Mfr. Part No.ERZE07A511
BrandPanasonic
MYR0.778
Each (In a Pack of 25)
units
510V 320V 410V 845V 25A 70J ZNR 9mm 2500A 140pF - - 7mm 9 x 7mm
RS Stock No. 110-1905
Mfr. Part No.ERZV07D271
BrandPanasonic
MYR592.01
1 Bag of 1000
Bag(s)
270V 175V 225V 455V - - ZNR - 1750A 150pF - - - 8.5 (Dia.) x 4.8mm
RS Stock No. 289-7749
Mfr. Part No.B72210S0321K101
BrandEPCOS
MYR0.942
Each (In a Pack of 5)
units
510V 320V 420V 840V 25A 50J Standard 12mm 2500A 170pF - - 5.4mm 12 (Dia.) x 5.4mm
RS Stock No. 289-7250
Mfr. Part No.B72220S0950K101
BrandEPCOS
MYR4.70
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. 760-6927
Mfr. Part No.V24ZA50P
BrandLittelfuse
MYR3.182
Each (In a Pack of 5)
units
19.2 → 26V 14V 18V 43V 20A 100J ZA 23mm 2000A 18nF - - 5mm 23 (Dia.) x 5mm
RS Stock No. 204-2214
Mfr. Part No.B72220S0421K101
BrandEPCOS
MYR6.538
Each (In a Pack of 5)
units
680V 420V 560V 1120V 100A 175J Standard 21.5mm 8000A 420pF - - 6.5mm 21.5 (Dia.) x 6.5mm
RS Stock No. 106-7962
Mfr. Part No.ERZE10A911
BrandPanasonic
MYR747.80
1 Bag of 1000
Bag(s)
910V 550V 745V 1500V - - ZNR - 4500A 220pF - - - 12.5 (Dia.) x 9.5mm
RS Stock No. 226-8056
Mfr. Part No.ERZV07D471
BrandPanasonic
MYR2.498
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. 170-9982
Mfr. Part No.V420LA20AP
BrandLittelfuse
MYR0.937
Each (In a Bag of 600)
units
610 → 748V 420V 560V 1120V 50A 90J LA 17mm 4500A 300pF - - 7.3mm 17 (Dia.) x 7.3mm
RS Stock No. 240-236
BrandRS PRO
MYR147.86
Each
units
- 275V 365V - - 360J High Power - - - 61mm 50mm 40mm 61 x 50 x 40mm
RS Stock No. 204-1902
Mfr. Part No.B72214S0140K101
BrandEPCOS
MYR2.328
Each (In a Pack of 5)
units
22V 14V 18V 43V 10A 4J Standard 15.5mm 1000A 9.95nF - - 4.2mm 15.5 (Dia.) x 4.2mm
RS Stock No. 876-8151
Mfr. Part No.V321HB34
BrandLittelfuse
MYR43.185
Each (In a Pack of 180)
units
459V 320V 420V 510V - - HB34 - 40000A 3.8nF 37mm - - 37 x 47.5 x 6.9mm
RS Stock No. 289-7288
Mfr. Part No.B72220S0171K101
BrandEPCOS
MYR4.61
Each (In a Pack of 5)
units
270V 175V 225V 455V 100A 98J Standard 21.5mm 8000A 1nF - - 5mm 21.5 (Dia.) x 5mm
RS Stock No. 240-141
BrandRS PRO
MYR49.66
Each
units
670V 460V 615V 1140V - 350J High Power 36mm 12000A 2.05nF - - 6mm 36 (Dia.) x 6mm
RS Stock No. 170-9981
Mfr. Part No.V430CH8T
BrandLittelfuse
MYR5.152
Each (On a Reel of 1000)
units
389 → 473V 275V 369V 710V 10A 8J CH - 250A 50pF 8.51mm 5.26mm 2.03mm 8.51 x 5.26 x 2.03mm
RS Stock No. 106-9875
Mfr. Part No.ERZV07D271
BrandPanasonic
MYR0.592
Each (In a Bag of 1000)
units
270V 175V 225V 455V - - ZNR - 1750A 150pF - - - 8.5 (Dia.) x 4.8mm
RS Stock No. 785-8963
Mfr. Part No.ERZE14A361
BrandPanasonic
MYR3.56
Each (In a Pack of 5)
units
360V 230V 300V 595V 100A 255J ZNR 16.5mm 10000A 900pF - - 5.9mm 16.5 x 5.9mm
RS Stock No. 785-8904
Mfr. Part No.ERZE11A431
BrandPanasonic
MYR1.112
Each (In a Pack of 25)
units
430V 275V 350V 710V 50A 155J ZNR 13mm 6000A 400pF - - 6.4mm 13 x 6.4mm
RS Stock No. 721-0049
Mfr. Part No.ERZV20D431
BrandPanasonic
MYR7.36
Each (In a Pack of 2)
units
430V 275V 350V 710V 100A - ZNR 21.5mm 10000A - - - - 21.5 (Dia.) x 6.4mm
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