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. 138-9254
Mfr. Part No.B72205S0381K101
BrandEPCOS
PHP13.64
Each (In a Bag of 20)
units
620V 385Vrms 505V 1025V 5A 13J Standard - 400A 45pF 7mm 9mm 5.1mm 7 x 5.1 x 9mm
RS Stock No. 138-6056
Mfr. Part No.B72214S2301K101
BrandEPCOS
PHP17.339
Each (In a Box of 500)
units
470V 300Vrms 385V 775V 50A 125J Advanced - 6000A 400pF 15.5mm 18.5mm 5.6mm 15.5 x 5.6 x 18.5mm
RS Stock No. 289-7008
Mfr. Part No.B72210S0600K101
BrandEPCOS
PHP27.784
Each (In a Pack of 5)
units
100V 60V 85V 165V 25A 10J Standard 12mm 2500A 870pF - - 4mm 12 (Dia.) x 4mm
RS Stock No. 878-1303
Mfr. Part No.V271DA40
BrandLittelfuse
PHP2,163.898
Each (In a Pack of 12)
units
473V 275V 369V 730V - - DA - 40000A 4.5nF 62mm - - 62 x 67 x 15mm
RS Stock No. 138-9293
Mfr. Part No.B72207S0250K101
BrandEPCOS
PHP15.698
Each (In a Bag of 20)
units
39V 25Vrms 31V 77V 2.5A 1.6J Standard - 250A 1.4nF 9mm 11mm 3.7mm 9 x 3.7 x 11mm
RS Stock No. 543-4969
Mfr. Part No.V150LA20AP
BrandLittelfuse
PHP54.022
Each (In a Pack of 5)
units
268V 150V 200V 395V 100A 80J LA 23mm 6500A 1.6nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 204-8668
Mfr. Part No.DV75K3225R2
BrandBourns
PHP70.528
Each (In a Pack of 10)
units
120V - - 200V 5A - DV - - 240pF - - - -
New
RS Stock No. 211-1081
Mfr. Part No.AV20K1812801NIR1HT
BrandBourns
PHP18.109
Each (On a Reel of 1000)
units
22V 20V 26V 54V 5A - AVHT - - 3.3nF - - - -
RS Stock No. 204-8676
Mfr. Part No.DV150K3225R2
BrandBourns
PHP19.362
Each (On a Reel of 2000)
units
240V - - 395V 5A - DV - - 150pF - - - -
RS Stock No. 202-0481
Mfr. Part No.B72225M0271M301
BrandEPCOS
PHP1,240,684.03
1 Tray of 40
Tray(s)
430V - - - - - MT25 - - 1.32nF - - - -
RS Stock No. 162-1439
Mfr. Part No.B72220P3421K101
BrandEPCOS
PHP55.65
Each (On a Reel of 250)
units
680V 420V 560V 1120V 100A 320J SuperioR-MP 22.5mm 12000A 395pF - - 8.6mm 22.5 (Dia.) x 8.6mm
RS Stock No. 186-2089
Mfr. Part No.GMOV-20D251K
BrandBourns
PHP105.472
Each (In a Pack of 5)
units
250 Vrms, 320 V dc 250Vrms 320V 675V 10000A 275J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 209-8085
Mfr. Part No.AV17K1210401NIR1
BrandBourns
PHP9.209
Each (On a Reel of 2500)
units
27V 17V ac 20V dc 44V 2.5A - AV Series - - 2nF - - - -
RS Stock No. 106-9928
Mfr. Part No.ERZV20D271
BrandPanasonic
PHP38.724
Each (In a Bag of 1000)
units
270V 175V 225V 455V - - ZNR - 10000A 1.3nF - - - 21.5 (Dia.) x 5.6mm
RS Stock No. 170-2857
Mfr. Part No.B72214S0350K101
BrandEPCOS
PHP14.449
Each (On a Reel of 500)
units
56V 35V 45V 110V 10A 10J Standard 15.5mm 1000A 4.2nF - - 4.5mm 15.5 (Dia.) x 4.5mm
New
RS Stock No. 211-1116
Mfr. Part No.ZV17K1210401NIR1
BrandBourns
PHP15.747
Each (On a Tape of 25)
units
27V 17V 22V 44V 3A - ZV - - 1.7nF - - - -
RS Stock No. 187-8348
Mfr. Part No.ERZE14A271S1
BrandPanasonic
PHP50.97
Each (In a Pack of 10)
units
270V 175V 225V 455V 100A 190J E14-S1 16.5mm 7500A 1000pF - - 5.6mm 16.5 Dia. x 5.6mm
RS Stock No. 170-9952
Mfr. Part No.V120MLA1210H
BrandLittelfuse
PHP29.93
Each (On a Reel of 1000)
units
135 → 165V 107V 120V 260V 2.5A 2J ML - 125A 80pF 3.2mm 2.54mm 2.87mm 3.2 x 2.54 x 2.87mm
New
RS Stock No. 211-1164
Mfr. Part No.ZV40K1206121NIR1
BrandBourns
PHP6.85
Each (On a Reel of 2500)
units
68V 40V 56V 110V 1A - ZV - - 370pF - - - -
RS Stock No. 202-0484
Mfr. Part No.B72225M0321M301
BrandEPCOS
PHP31,017.11
Each
units
510V - - - - - MT25 - - 1.09nF - - - -