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. 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$8.522
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. 720-9945
Mfr. Part No.ERZV14D101
BrandPanasonic
HK$4.28
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. 204-1873
Mfr. Part No.B72210S0200K101
BrandEPCOS
HK$4.62
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. 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. 769-1997
Mfr. Part No.B72650M0301K072
BrandEPCOS
HK$6.612
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. 171-0009
Mfr. Part No.V47ZA7P
BrandLittelfuse
HK$2.58
Each (In a Bag of 700)
units
52V 30V 38V 93V 10A 8.8J ZA 17mm 1000A 6.27nF - - 5mm 17 (Dia.) x 5mm
RS Stock No. 226-8107
Mfr. Part No.ERZV10D681
BrandPanasonic
HK$5.05
Each (In a Pack of 5)
units
680V 420V 560V 1120V 25A 92J ZNR 12.5mm 3500A 170pF - - 7.4mm 12.5 (Dia.) x 7.4mm
RS Stock No. 170-9904
Mfr. Part No.V130LA20AP
BrandLittelfuse
HK$4.50
Each (In a Bag of 500)
units
228V 130V 175V 340V 100A 70J LA 23mm 6500A 1.9nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 110-1875
Mfr. Part No.ERZV05D220
BrandPanasonic
HK$0.736
Each (In a Bag of 10000)
units
22V 14V 18V 48V - - ZNR - 250A 1.5nF - - - 7 (Dia.) x 4.5mm
RS Stock No. 106-9905
Mfr. Part No.ERZV14D101
BrandPanasonic
HK$1.57
Each (In a Bag of 1000)
units
100V 60V 85V 165V - - ZNR - 6000A 3.2nF - - - 15.5 (Dia.) x 4.7mm
RS Stock No. 226-7895
Mfr. Part No.ERZV07D470
BrandPanasonic
HK$3.42
Each (In a Pack of 5)
units
47V 30V 38V 93V 2.5A 2.8J ZNR 8.5mm 500A 1.55nF - - 4.9mm 8.5 (Dia.) x 4.9mm
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
RS Stock No. 204-1867
Mfr. Part No.B72207S0950K101
BrandEPCOS
HK$4.54
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. 289-7064
Mfr. Part No.B72210S0251K101
BrandEPCOS
HK$4.852
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. 226-7817
Mfr. Part No.ERZV05D220
BrandPanasonic
HK$3.08
Each (In a Pack of 5)
units
22V 14V 18V 48V 1A 0.7J ZNR 7mm 250A 1.5nF - - 4.5mm 7 (Dia.) x 4.5mm
RS Stock No. 720-9973
Mfr. Part No.ERZV14D391
BrandPanasonic
HK$5.99
Each (In a Pack of 5)
units
390V 250V 320V 650V 50A - ZNR 15.5mm 6000A 500pF - - - 15.5 (Dia.) x 5.8mm
RS Stock No. 178-071
Mfr. Part No.VDRS07H275BSE
BrandVishay
HK$4.72
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 36J VDRS - E 9mm 1200A 140pF - - 4.9mm 9 (Dia.) x 4.9mm
RS Stock No. 170-2861
Mfr. Part No.B72210S0500K101
BrandEPCOS
HK$1.71
Each (On a Reel of 500)
units
82V 50V 65V 135V 25A 8.4J Standard 12mm 2500A 950pF - - 3.9mm 12 (Dia.) x 3.9mm
RS Stock No. 170-2866
Mfr. Part No.B72214S0750K101
BrandEPCOS
HK$2.07
Each (On a Reel of 500)
units
120V 75V 100V 200V 50A 20J Standard 15.5mm 4500A 1.37nF - - 4.2mm 15.5 (Dia.) x 4.2mm
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