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. 204-2208
Mfr. Part No.B72220S0271K101
BrandEPCOS
MYR1.90
Each (In a Pack of 5)
units
430V 275V 350V 710V 100A 151J B72220 21.5mm 8000A 630pF - - 5.4mm 21.5 (Dia.) x 5.4mm
RS Stock No. 240-185
BrandRS PRO
MYR124.18
Each
units
610V 420V 560V 1050V - 260J High Power 32mm 10000A 1.71nF - - 5.5mm 32 (Dia.) x 5.5mm
RS Stock No. 289-7446
Mfr. Part No.B72205S0350K101
BrandEPCOS
MYR1.39
Each (In a Pack of 5)
units
56V 35V 45V 110V 1A 1.1J Standard 7mm 100A 620pF - - 3.7mm 7 (Dia.) x 3.7mm
RS Stock No. 162-1436
Mfr. Part No.B72205S0350K101
BrandEPCOS
MYR0.396
Each (On a Reel of 1000)
units
56V 35V 45V 110V 1A 1.1J Standard 7mm 100A 620pF - - 3.7mm 7 (Dia.) x 3.7mm
RS Stock No. 170-2906
Mfr. Part No.B72214S0321K101
BrandEPCOS
MYR0.944
Each (On a Reel of 250)
units
510V 320V 420V - 4500A 84J StandarD 15.5mm - 280pF - - 5.4mm 15.5 (Dia.) x 5.4mm
RS Stock No. 720-9850
Mfr. Part No.ERZV10D330
BrandPanasonic
MYR1.774
Each (In a Pack of 10)
units
33V 20V 26V 65V 5A - ZNR 11.5mm 1000A 6.3nF - - - 11.5 (Dia.) x 5mm
RS Stock No. 173-9269
Mfr. Part No.MOV-14D431K
BrandBourns
MYR0.705
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. 851-8322
Mfr. Part No.MOV-14D431K
BrandBourns
MYR2.56
Each
units
430V - 350V 710V 50A 115J MOV-14D 16.5mm - 460pF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 769-1524
Mfr. Part No.B72214S0321K101
BrandEPCOS
MYR1.368
Each (In a Pack of 10)
units
510V 320V 420V - 4500A 84J StandarD 15.5mm - 280pF - - 5.4mm 15.5 (Dia.) x 5.4mm
RS Stock No. 106-9880
Mfr. Part No.ERZV10D330
BrandPanasonic
MYR1.097
Each (In a Bag of 1000)
units
33V 20V 26V 65V - - ZNR - 1000A 6.3nF - - - 11.5 (Dia.) x 5mm
RS Stock No. 110-1910
Mfr. Part No.ERZV10D330
BrandPanasonic
MYR1.097
Each (In a Bag of 1000)
units
33V 20V 26V 65V - - ZNR - 1000A 6.3nF - - - 11.5 (Dia.) x 5mm
RS Stock No. 785-8720
Mfr. Part No.ERZE05A431
BrandPanasonic
MYR1.003
Each (In a Pack of 25)
units
430V 275V 350V 710V 10A 29J ZNR 7mm 1200A 120pF - - 6.1mm 7 x 6.1mm
RS Stock No. 106-9895
Mfr. Part No.ERZV10D471
BrandPanasonic
MYR0.655
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 3500A 230pF - - - 11.5 (Dia.) x 6.2mm
RS Stock No. 106-7978
Mfr. Part No.ERZE05A431
BrandPanasonic
MYR0.701
Each (In a Box of 100)
units
430V 275V 350V 710V - - ZNR - 1200A 120pF - - - 7 x 6.1mm
RS Stock No. 720-9908
Mfr. Part No.ERZV10D471
BrandPanasonic
MYR1.239
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. 764-0822
Mfr. Part No.EZJS2VB223
BrandPanasonic
MYR1.72
Each (In a Pack of 10)
units
12V - 6V - - - EZJS - 25A 22nF 2mm 1.25mm - 2 x 1.25 x 1.25mm
RS Stock No. 171-0005
Mfr. Part No.V33ZA1P
BrandLittelfuse
MYR0.518
Each (In a Bag of 1500)
units
36.5V 20V 26V 65V 2.5A 1.2J ZA 9mm 250A 1.62nF - - 5mm 9 (Dia.) x 5mm
RS Stock No. 800-7084
Mfr. Part No.V33ZA1P
BrandLittelfuse
MYR1.445
Each (In a Pack of 25)
units
36.5V 20V 26V 65V 2.5A 1.2J ZA 9mm 250A 1.62nF - - 5mm 9 (Dia.) x 5mm
RS Stock No. 110-1926
Mfr. Part No.ERZV14D220
BrandPanasonic
MYR0.87
Each (In a Bag of 1000)
units
22V 14V 18V 43V - - ZNR - 2000A 20nF - - - 15.5 (Dia.) x 4.7mm
RS Stock No. 106-9896
Mfr. Part No.ERZV14D220
BrandPanasonic
MYR0.87
Each (In a Bag of 1000)
units
22V 14V 18V 43V - - ZNR - 2000A 20nF - - - 15.5 (Dia.) x 4.7mm