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. 110-1932
Mfr. Part No.ERZV14D390
BrandPanasonic
HK$1.582
Each (In a Bag of 1000)
units
39V 25V 31V 77V - - ZNR - 2000A 7nF - - - 15.5 (Dia.) x 4.9mm
RS Stock No. 878-3835
Mfr. Part No.V130LXR1318
BrandLittelfuse
HK$2,379.10
Each (In a Pack of 100)
units
130V 130V 175V 340V - - UltraMOVTM - 10000A 450pF - - - -
RS Stock No. 289-7020
Mfr. Part No.B72210S0141K101
BrandEPCOS
HK$1.722
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. 644-0000
Mfr. Part No.AVR-M1005C080MTABB
BrandTDK
HK$1.05
Each (In a Pack of 10)
units
8V - 5.5V 15V 1A 0.02J - - 3A 100pF 1mm 0.5mm - -
RS Stock No. 162-1445
Mfr. Part No.B72205S0110K101
BrandEPCOS
HK$0.871
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. 204-2056
Mfr. Part No.B72207S0251K101
BrandEPCOS
HK$2.40
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. 204-2208
Mfr. Part No.B72220S0271K101
BrandEPCOS
HK$8.13
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. 289-7187
Mfr. Part No.B72214S0271K101
BrandEPCOS
HK$4.69
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. 170-9920
Mfr. Part No.V480LA40AP
BrandLittelfuse
HK$1.651
Each (In a Bag of 600)
units
825V 480V 640V 1240V 50A 105J LA 17mm 4500A 270pF - - 7.3mm 17 (Dia.) x 7.3mm
RS Stock No. 851-8335
Mfr. Part No.MOV-14D471K
BrandBourns
HK$2.25
Each
units
470V - 385V 775V 50A 125J MOV-14D 16.5mm - 430pF - - 5.4mm 16.5 (Dia.) x 5.4mm
RS Stock No. 178-071
Mfr. Part No.VDRS07H275BSE
BrandVishay
HK$4.20
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. 720-9771
Mfr. Part No.ERZV05D271
BrandPanasonic
HK$1.096
Each (In a Pack of 10)
units
270V 175V 225V 475V 5A 11J ZNR 7mm 800A 90pF - - 4.8mm 7 (Dia.) x 4.8mm
RS Stock No. 106-7968
Mfr. Part No.ERZE14A471
BrandPanasonic
HK$3.119
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 10000A 750pF - - - 16.5 x 6.4mm
RS Stock No. 162-0229
Mfr. Part No.B72500E0140K060
BrandEPCOS
HK$2,859.02
1 Reel of 4000
Reel(s)
19.8 → 24.2V 14V 18V 40V 1A 0.2J - - 30A 100pF 1.6mm 0.8mm - 1.6 x 0.8 x 0.9mm
RS Stock No. 170-2869
Mfr. Part No.B72220S0171K101
BrandEPCOS
HK$4.449
Each (On a Reel of 250)
units
270V 175V 225V 455V 100A 98J Standard 21.5mm 8000A 1nF - - 5mm 21.5 (Dia.) x 5mm
RS Stock No. 171-0017
Mfr. Part No.V5.5MLA0603H
BrandLittelfuse
HK$2,866.87
Each (On a Reel of 2500)
units
9.3V 4V 5.5V 17.5V 1A 0.1J ML - 30A 500pF 1.6mm 1mm 0.8mm 1.6 x 0.8 x 1mm
RS Stock No. 170-2879
Mfr. Part No.B72210S0110K101
BrandEPCOS
HK$1.68
Each (On a Reel of 500)
units
18V 11V 14V 36V 5A 1.7J Standard 12mm 500A 6.25nF - - 4mm 12 (Dia.) x 4mm
RS Stock No. 170-9955
Mfr. Part No.V14MLA1206H
BrandLittelfuse
HK$1.307
Each (On a Reel of 2500)
units
15.9 → 20.3V 10V 14V 32V 1A 0.4J ML - 150A 1.4nF 3.2mm 1.6mm 1.8mm 3.2 x 1.6 x 1.8mm
RS Stock No. 170-2871
Mfr. Part No.B72220S0231K101
BrandEPCOS
HK$4.564
Each (On a Reel of 250)
units
360V 230V 300V 595V 100A 130J Standard 21.5mm 8000A 760pF - - 5.1mm 21.5 (Dia.) x 5.1mm
RS Stock No. 876-8177
Mfr. Part No.V12ZA2
BrandLittelfuse
HK$3.092
Each (In a Pack of 50)
units
16V 6V 8V 30V - 1.2J ZA - 250A 6.1nF - - - 12.5 (Dia.) x 16mm