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. 170-9953
Mfr. Part No.V130LA20BP
BrandLittelfuse
HK$3.867
Each (In a Bag of 500)
units
184 → 220V 130V 175V 325V 100A 70J LA 23mm 6500A 1.9nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 760-6850
Mfr. Part No.V130LA20BP
BrandLittelfuse
HK$7.488
Each (In a Pack of 5)
units
184 → 220V 130V 175V 325V 100A 70J LA 23mm 6500A 1.9nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 226-8040
Mfr. Part No.ERZV07D431
BrandPanasonic
HK$3.088
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 40J ZNR 8.5mm 1750A 120pF - - 5.6mm 8.5 (Dia.) x 5.6mm
RS Stock No. 170-9917
Mfr. Part No.V33ZA5P
BrandLittelfuse
HK$2.404
Each (In a Bag of 700)
units
36.5V 20V 26V 65V 10A 6J ZA 17mm 1000A 9.29nF - - 5mm 17 (Dia.) x 5mm
RS Stock No. 543-5209
Mfr. Part No.V33ZA5P
BrandLittelfuse
HK$4.39
Each (In a Pack of 5)
units
36.5V 20V 26V 65V 10A 6J ZA 17mm 1000A 9.29nF - - 5mm 17 (Dia.) x 5mm
RS Stock No. 170-9980
Mfr. Part No.V420LA40BP
BrandLittelfuse
HK$5.067
Each (In a Bag of 400)
units
610 → 720V 420V 560V 1060V 100A 160J LA 23mm 6500A 600pF - - 7.3mm 23 (Dia.) x 7.3mm
RS Stock No. 760-7011
Mfr. Part No.V420LA40BP
BrandLittelfuse
HK$7.488
Each (In a Pack of 5)
units
610 → 720V 420V 560V 1060V 100A 160J LA 23mm 6500A 600pF - - 7.3mm 23 (Dia.) x 7.3mm
RS Stock No. 878-2028
Mfr. Part No.V130LA20CP
BrandLittelfuse
HK$6.201
Each (In a Pack of 50)
units
225.5V 130V - 340V - 200J C-III - 10000A - - - - 23 (Dia.) x 28mm
RS Stock No. 106-9896
Mfr. Part No.ERZV14D220
BrandPanasonic
HK$1.397
Each (In a Bag of 1000)
units
22V 14V 18V 43V - - ZNR - 2000A 20nF - - - 15.5 (Dia.) x 4.7mm
RS Stock No. 720-9910
Mfr. Part No.ERZV14D220
BrandPanasonic
HK$4.584
Each (In a Pack of 5)
units
22V 14V 18V 43V 10A 6.3J ZNR 15.5mm 2000A 20nF - - 4.7mm 15.5 (Dia.) x 4.7mm
RS Stock No. 170-2873
Mfr. Part No.B72220S0461K101
BrandEPCOS
HK$5.558
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. 289-7339
Mfr. Part No.B72220S0461K101
BrandEPCOS
HK$6.992
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. 110-1926
Mfr. Part No.ERZV14D220
BrandPanasonic
HK$1.47
Each (In a Bag of 1000)
units
22V 14V 18V 43V - - ZNR - 2000A 20nF - - - 15.5 (Dia.) x 4.7mm
RS Stock No. 226-8056
Mfr. Part No.ERZV07D471
BrandPanasonic
HK$3.25
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. 226-8179
Mfr. Part No.ERZV14D182
BrandPanasonic
HK$20.02
Each (In a Pack of 5)
units
1800V 1000V 1465V 2970V 50A 510J ZNR 17mm 5000A - - - 14.4mm 17 (Dia.) x 14.4mm
RS Stock No. 289-7301
Mfr. Part No.B72220S0251K101
BrandEPCOS
HK$7.848
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. 204-1867
Mfr. Part No.B72207S0950K101
BrandEPCOS
HK$4.314
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. 226-7873
Mfr. Part No.ERZV07D330
BrandPanasonic
HK$3.522
Each (In a Pack of 5)
units
33V 20V 26V 65V 2.5A 2J ZNR 8.5mm 500A 2.9nF - - 4.9mm 8.5 (Dia.) x 4.9mm
RS Stock No. 720-9945
Mfr. Part No.ERZV14D101
BrandPanasonic
HK$4.316
Each (In a Pack of 5)
units
100V 60V 85V 165V 50A 35J ZNR 15.5mm 6000A 3.2nF - - 4.7mm 15.5 (Dia.) x 4.7mm
RS Stock No. 167-0539
Mfr. Part No.B72650M0301K072
BrandEPCOS
HK$5.686
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