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. 162-1436
Mfr. Part No.B72205S0350K101
BrandEPCOS
MYR0.486
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. 289-7446
Mfr. Part No.B72205S0350K101
BrandEPCOS
MYR1.754
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. 769-1524
Mfr. Part No.B72214S0321K101
BrandEPCOS
MYR1.523
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. 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. 167-8514
Mfr. Part No.B72240B0381K001
BrandEPCOS
MYR129.591
Each (In a Box of 10)
units
620V 385V 505V 1025V 300A 800J HighE - 40000A 1.9nF 60mm 14mm - -
RS Stock No. 291-3510
Mfr. Part No.B72240B0381K001
BrandEPCOS
MYR133.76
Each
units
620V 385V 505V 1025V 300A 800J HighE - 40000A 1.9nF 60mm 14mm - -
RS Stock No. 162-1431
Mfr. Part No.B72220Q0301K101
BrandEPCOS
MYR4.326
Each (On a Reel of 250)
units
470V 300V 385V 775V 130A 235J EnergetiQ 22.5mm 15000A 850pF - - 6.1mm 22.5 (Dia.) x 6.1mm
RS Stock No. 170-2885
Mfr. Part No.B72220S0300K101
BrandEPCOS
MYR2.658
Each (On a Reel of 250)
units
47V 30V 38V 93V 20A 26J Standard 21.5mm 2000A 9.35nF - - 4.9mm 21.5 (Dia.) x 4.9mm
RS Stock No. 468-150
Mfr. Part No.B72220Q0301K101
BrandEPCOS
MYR6.92
Each (In a Pack of 5)
units
470V 300V 385V 775V 130A 235J EnergetiQ 22.5mm 15000A 850pF - - 6.1mm 22.5 (Dia.) x 6.1mm
RS Stock No. 289-7597
Mfr. Part No.B72220S0300K101
BrandEPCOS
MYR4.074
Each (In a Pack of 5)
units
47V 30V 38V 93V 20A 26J Standard 21.5mm 2000A 9.35nF - - 4.9mm 21.5 (Dia.) x 4.9mm
RS Stock No. 170-2888
Mfr. Part No.B72220S0321K101
BrandEPCOS
MYR2.658
Each (On a Reel of 250)
units
510V 320V 420V 840V 100A 184J Standard 21.5mm 8000A 540pF - - 5.8mm 21.5 (Dia.) x 5.8mm
RS Stock No. 289-7711
Mfr. Part No.B72220S0321K101
BrandEPCOS
MYR3.03
Each (In a Pack of 5)
units
510V 320V 420V 840V 100A 184J Standard 21.5mm 8000A 540pF - - 5.8mm 21.5 (Dia.) x 5.8mm
RS Stock No. 204-1930
Mfr. Part No.B72214S0300K101
BrandEPCOS
MYR2.216
Each (In a Pack of 5)
units
47V 30V 38V 30V 10A 9J Standard 15.5mm 1000A 4.95nF - - 4.4mm 15.5 (Dia.) x 4.4mm
RS Stock No. 204-1918
Mfr. Part No.B72214S0200K101
BrandEPCOS
MYR1.922
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. 289-7121
Mfr. Part No.B72214S0500K101
BrandEPCOS
MYR1.248
Each (In a Pack of 5)
units
82V 50V 65V 135V 50A 15J Standard 15.5mm 4500A 1.8nF - - 3.9mm 15.5 (Dia.) x 3.9mm
RS Stock No. 162-1435
Mfr. Part No.B72214S0500K101
BrandEPCOS
MYR1.208
Each (On a Reel of 500)
units
82V 50V 65V 135V 50A 15J Standard 15.5mm 4500A 1.8nF - - 3.9mm 15.5 (Dia.) x 3.9mm
RS Stock No. 289-7187
Mfr. Part No.B72214S0271K101
BrandEPCOS
MYR1.88
Each (In a Pack of 5)
units
430V 275V 350V 710V 50A 71J Standard 15.5mm 4500A 440pF - - 5mm 15.5 (Dia.) x 5mm
RS Stock No. 711-8155
Mfr. Part No.B72214P2321K101
BrandEPCOS
MYR2.72
Each (In a Pack of 5)
units
510V 320V 420V 840V 50A 150J AdvanceD-MP 16mm 6000A 280pF - - 6.3mm 16 (Dia.) x 6.3mm
RS Stock No. 170-2873
Mfr. Part No.B72220S0461K101
BrandEPCOS
MYR3.576
Each (On a Reel of 200)
units
750V 460V 615V 1240V 100A 195J Standard 21.5mm 8000A 380pF - - 6.8mm 21.5 (Dia.) x 6.8mm