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. 289-7339
Mfr. Part No.B72220S0461K101
BrandEPCOS
HK$9.796
Each (In a Pack of 5)
units
750V 460V 615V 1240V 100A 195J Standard 21.5mm 8000A 380pF - - 6.8mm 21.5 (Dia.) x 6.8mm
RS Stock No. 170-2873
Mfr. Part No.B72220S0461K101
BrandEPCOS
HK$5.838
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
RS Stock No. 289-7301
Mfr. Part No.B72220S0251K101
BrandEPCOS
HK$8.612
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. 167-0539
Mfr. Part No.B72650M0301K072
BrandEPCOS
HK$3.459
Each (On a Reel of 1000)
units
470V 300Vrms 385V 775V 5A - CU - 400A 45pF 8mm 6.3mm 4.5mm 8 x 6.3 x 4.5mm
RS Stock No. 170-2852
Mfr. Part No.B72207S0950K101
BrandEPCOS
HK$0.998
Each (On a Reel of 1000)
units
150V 95V 125V 250V 10A 7.6J Standard 9mm 1200A 260pF - - 3.4mm 9 (Dia.) x 3.4mm
RS Stock No. 204-1867
Mfr. Part No.B72207S0950K101
BrandEPCOS
HK$4.768
Each (In a Pack of 5)
units
150V 95V 125V 250V 10A 7.6J Standard 9mm 1200A 260pF - - 3.4mm 9 (Dia.) x 3.4mm
RS Stock No. 204-1930
Mfr. Part No.B72214S0300K101
BrandEPCOS
HK$3.886
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. 289-7064
Mfr. Part No.B72210S0251K101
BrandEPCOS
HK$4.95
Each (In a Pack of 5)
units
390V 250V 320V 650V 25A 38J Standard 12mm 2500A 215pF - - 4.8mm 12 (Dia.) x 4.8mm
RS Stock No. 204-1873
Mfr. Part No.B72210S0200K101
BrandEPCOS
HK$4.852
Each (In a Pack of 5)
units
33V 20V 26V 65V 5A 3.1J Standard 12mm 500A 3.65nF - - 4.5mm 12 (Dia.) x 4.5mm
RS Stock No. 769-1997
Mfr. Part No.B72650M0301K072
BrandEPCOS
HK$7.55
Each (In a Pack of 5)
units
470V 300Vrms 385V 775V 5A - CU - 400A 45pF 8mm 6.3mm 4.5mm 8 x 6.3 x 4.5mm
RS Stock No. 467-973
Mfr. Part No.B72220Q0271K101
BrandEPCOS
HK$13.926
Each (In a Pack of 5)
units
430V 275V 350V 710V 130A 215J EnergetiQ 22.5mm 15000A 930pF - - 5.8mm 22.5 (Dia.) x 5.8mm
RS Stock No. 162-1445
Mfr. Part No.B72205S0110K101
BrandEPCOS
HK$0.903
Each (On a Reel of 1000)
units
18V 11V 14V 36V 1A 0.3J Standard 7mm 100A 1.75nF - - 3.3mm 7 (Dia.) x 3.3mm
RS Stock No. 289-6998
Mfr. Part No.B72210S0500K101
BrandEPCOS
HK$3.172
Each (In a Pack of 5)
units
82V 50V 65V 135V 25A 8.4J Standard 12mm 2500A 950pF - - 3.9mm 12 (Dia.) x 3.9mm
RS Stock No. 204-2056
Mfr. Part No.B72207S0251K101
BrandEPCOS
HK$4.676
Each (In a Pack of 5)
units
390V 250V 320V 650V 10A 19J Standard 9mm 1200A 105pF - - 4.2mm 9 (Dia.) x 4.2mm
RS Stock No. 289-7187
Mfr. Part No.B72214S0271K101
BrandEPCOS
HK$4.816
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. 170-2913
Mfr. Part No.B72220Q0271K101
BrandEPCOS
HK$8.873
Each (On a Reel of 250)
units
430V 275V 350V 710V 130A 215J EnergetiQ 22.5mm 15000A 930pF - - 5.8mm 22.5 (Dia.) x 5.8mm
RS Stock No. 289-6982
Mfr. Part No.B72207S0231K101
BrandEPCOS
HK$4.768
Each (In a Pack of 5)
units
360V 230V 300V 595V 10A 17J Standard 9mm 1200A 115pF - - 4mm 9 (Dia.) x 4mm
RS Stock No. 204-2208
Mfr. Part No.B72220S0271K101
BrandEPCOS
HK$3.616
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. 289-7020
Mfr. Part No.B72210S0141K101
BrandEPCOS
HK$4.852
Each (In a Pack of 5)
units
220V 140V 180V 360V 25A 22J Standard 12mm 2500A 370pF - - 4.3mm 12 (Dia.) x 4.3mm
RS Stock No. 289-7474
Mfr. Part No.B72205S0110K101
BrandEPCOS
HK$4.408
Each (In a Pack of 5)
units
18V 11V 14V 36V 1A 0.3J Standard 7mm 100A 1.75nF - - 3.3mm 7 (Dia.) x 3.3mm