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. 204-1918
Mfr. Part No.B72214S0200K101
BrandEPCOS
$0.638
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. 170-2852
Mfr. Part No.B72207S0950K101
BrandEPCOS
$0.183
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. 289-7288
Mfr. Part No.B72220S0171K101
BrandEPCOS
$1.576
Each (In a Pack of 5)
units
270V 175V 225V 455V 100A 98J Standard 21.5mm 8000A 1nF - - 5mm 21.5 (Dia.) x 5mm
RS Stock No. 170-2869
Mfr. Part No.B72220S0171K101
BrandEPCOS
$0.869
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. 204-1867
Mfr. Part No.B72207S0950K101
BrandEPCOS
$0.926
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. 204-2208
Mfr. Part No.B72220S0271K101
BrandEPCOS
$1.33
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. 289-7042
Mfr. Part No.B72210S0171K101
BrandEPCOS
$0.972
Each (In a Pack of 5)
units
270V 175V 225V 455V 25A 28J Standard 12mm 2500A 300pF - - 4.6mm 12 (Dia.) x 4.6mm
RS Stock No. 289-7250
Mfr. Part No.B72220S0950K101
BrandEPCOS
$1.576
Each (In a Pack of 5)
units
150V 95V 125V 250V 100A 50J Standard 21.5mm 6500A 1.83nF - - 4.5mm 21.5 (Dia.) x 4.5mm
RS Stock No. 170-2868
Mfr. Part No.B72220S0950K101
BrandEPCOS
$0.714
Each (On a Reel of 250)
units
150V 95V 125V 250V 100A 50J Standard 21.5mm 6500A 1.83nF - - 4.5mm 21.5 (Dia.) x 4.5mm
RS Stock No. 204-2090
Mfr. Part No.B72210S0131K101
BrandEPCOS
$0.972
Each (In a Pack of 5)
units
205V 130V 170V 340V 25A 19J Standard 12mm 2500A 400pF - - 4.2mm 12 (Dia.) x 4.2mm
RS Stock No. 289-6746
Mfr. Part No.B72210S0140K101
BrandEPCOS
$0.93
Each (In a Pack of 5)
units
22V 14V 18V 43V 5A 2J Standard 12mm 500A 5.2nF - - 4.2mm 12 (Dia.) x 4.2mm
RS Stock No. 711-8133
Mfr. Part No.B72210P2321K101
BrandEPCOS
$0.90
Each (In a Pack of 5)
units
510V 320V 420V 840V 25A 72J AdvanceD-MP 12mm 3500A 170pF - - 6.3mm 12 (Dia.) x 6.3mm
RS Stock No. 204-2157
Mfr. Part No.B72214S0251K101
BrandEPCOS
$0.778
Each (In a Pack of 5)
units
390V 250V 320V 650V 50A 65J Standard 15.5mm 4500A 350pF - - 4.8mm 15.5 (Dia.) x 4.8mm
RS Stock No. 170-2887
Mfr. Part No.B72220S0111K101
BrandEPCOS
$0.714
Each (On a Reel of 250)
units
180V 115V 150V 300V 100A 60J Standard 21.5mm 6500A 1.52nF - - 4.7mm 21.5 (Dia.) x 4.7mm
RS Stock No. 289-7682
Mfr. Part No.B72220S0111K101
BrandEPCOS
$1.576
Each (In a Pack of 5)
units
180V 115V 150V 300V 100A 60J Standard 21.5mm 6500A 1.52nF - - 4.7mm 21.5 (Dia.) x 4.7mm
RS Stock No. 170-2914
Mfr. Part No.B72210P2321K101
BrandEPCOS
$0.433
Each (On a Reel of 500)
units
510V 320V 420V 840V 25A 72J AdvanceD-MP 12mm 3500A 170pF - - 6.3mm 12 (Dia.) x 6.3mm
RS Stock No. 170-2823
Mfr. Part No.B72210S0140K101
BrandEPCOS
$0.265
Each (On a Reel of 500)
units
22V 14V 18V 43V 5A 2J Standard 12mm 500A 5.2nF - - 4.2mm 12 (Dia.) x 4.2mm
RS Stock No. 204-2141
Mfr. Part No.B72214S0151K101
BrandEPCOS
$0.794
Each (In a Pack of 5)
units
240V 150V 200V 395V 50A 40J Standard 15.5mm 4500A 570pF - - 4.4mm 15.5 (Dia.) x 4.4mm
RS Stock No. 162-1431
Mfr. Part No.B72220Q0301K101
BrandEPCOS
$1.63
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. 204-2062
Mfr. Part No.B72207S0271K101
BrandEPCOS
$0.934
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 21J Standard 9mm 1200A 95pF - - 4.4mm 9 (Dia.) x 4.4mm