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. 204-2208
Mfr. Part No.B72220S0271K101
BrandEPCOS
$1.47
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. 170-2885
Mfr. Part No.B72220S0300K101
BrandEPCOS
$0.885
Each (On a Reel of 250)
units
47V 30V 38V 93V 20A 26J Standard 21.5mm 2000A 9.35nF - - 4.9mm 21.5 (Dia.) x 4.9mm
RS Stock No. 289-7597
Mfr. Part No.B72220S0300K101
BrandEPCOS
$2.818
Each (In a Pack of 5)
units
47V 30V 38V 93V 20A 26J Standard 21.5mm 2000A 9.35nF - - 4.9mm 21.5 (Dia.) x 4.9mm
RS Stock No. 289-7711
Mfr. Part No.B72220S0321K101
BrandEPCOS
$1.33
Each (In a Pack of 5)
units
510V 320V 420V 840V 100A 184J Standard 21.5mm 8000A 540pF - - 5.8mm 21.5 (Dia.) x 5.8mm
RS Stock No. 170-2888
Mfr. Part No.B72220S0321K101
BrandEPCOS
$0.851
Each (On a Reel of 250)
units
510V 320V 420V 840V 100A 184J Standard 21.5mm 8000A 540pF - - 5.8mm 21.5 (Dia.) x 5.8mm
RS Stock No. 289-7317
Mfr. Part No.B72220S0301K101
BrandEPCOS
$1.548
Each (In a Pack of 5)
units
470V 300V 385V 775V 100A 173J Standard 21.5mm 8000A 580pF - - 5.6mm 21.5 (Dia.) x 5.6mm
RS Stock No. 204-1930
Mfr. Part No.B72214S0300K101
BrandEPCOS
$1.694
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. 170-2863
Mfr. Part No.B72210S0301K101
BrandEPCOS
$0.231
Each (On a Reel of 500)
units
470V 300V 385V 775V 25A 47J Standard 12mm 2500A 180pF - - 5.1mm 12 (Dia.) x 5.1mm
RS Stock No. 289-7070
Mfr. Part No.B72210S0301K101
BrandEPCOS
$1.346
Each (In a Pack of 5)
units
470V 300V 385V 775V 25A 47J Standard 12mm 2500A 180pF - - 5.1mm 12 (Dia.) x 5.1mm
RS Stock No. 769-1543
Mfr. Part No.B72220P3551K101
BrandEPCOS
$2.827
Each (In a Pack of 10)
units
910V 550V 745V - 10000A 490J S20 23mm - 550pF - - 9.8mm 23 (Dia.) x 9.8mm
RS Stock No. 135-8296
Mfr. Part No.B72220P3551K101
BrandEPCOS
$2.813
Each (In a Bag of 100)
units
910V 550V 745V - 10000A 490J S20 23mm - 550pF - - 9.8mm 23 (Dia.) x 9.8mm
RS Stock No. 204-1924
Mfr. Part No.B72214S0250K101
BrandEPCOS
$1.93
Each (In a Pack of 5)
units
39V 25V 31V 77V 10A 7J Standard 15.5mm 1000A 5.85nF - - 4.2mm 15.5 (Dia.) x 4.2mm
RS Stock No. 769-1552
Mfr. Part No.B72220P3621K101
BrandEPCOS
$2.646
Each (In a Pack of 10)
units
1000V 625V 825V - 10000A 540J S20 23mm - 500pF - - 10.3mm 23 (Dia.) x 10.3mm
RS Stock No. 204-1801
Mfr. Part No.B72207S0140K101
BrandEPCOS
$0.458
Each (In a Pack of 5)
units
22V 14V 18V 43V 2.5A 0.9J Standard 9mm 250A 2.3nF - - 3.5mm 9 (Dia.) x 3.5mm
RS Stock No. 170-2910
Mfr. Part No.B72214P2551K101
BrandEPCOS
$1.258
Each (On a Reel of 200)
units
910V 550V 745V - 6000A 220J S14 17mm - 265pF - - 9.4mm 17 (Dia.) x 9.4mm
RS Stock No. 769-1537
Mfr. Part No.B72214P2551K101
BrandEPCOS
$1.548
Each (In a Pack of 10)
units
910V 550V 745V - 6000A 220J S14 17mm - 265pF - - 9.4mm 17 (Dia.) x 9.4mm
RS Stock No. 170-2912
Mfr. Part No.B72220P3621K101
BrandEPCOS
$2.063
Each (On a Reel of 100)
units
1000V 625V 825V - 10000A 540J S20 23mm - 500pF - - 10.3mm 23 (Dia.) x 10.3mm
RS Stock No. 289-7569
Mfr. Part No.B72220S0170K101
BrandEPCOS
$4.028
Each (In a Pack of 5)
units
27V 17V 22V 53V 20A 14J Standard 21.5mm 2000A 15.6nF - - 4.8mm 21.5 (Dia.) x 4.8mm
RS Stock No. 711-8151
Mfr. Part No.B72214P2301K101
BrandEPCOS
$1.23
Each (In a Pack of 5)
units
470V 300V 385V 775V 50A 140J AdvanceD-MP 16mm 6000A 285pF - - 6.1mm 16 (Dia.) x 6.1mm
RS Stock No. 170-2895
Mfr. Part No.B72214P2301K101
BrandEPCOS
$0.649
Each (On a Reel of 500)
units
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