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. 240-135
BrandRS PRO
MYR60.66
Each
units
610V 420V 560V 1050V - 310J High Power 36mm 12000A 2.05nF - - 5.5mm 36 (Dia.) x 5.5mm
RS Stock No. 110-1921
Mfr. Part No.ERZV10D271
BrandPanasonic
MYR642.00
1 Bag of 1000
Bag(s)
270V 175V 225V 455V - - ZNR - 3500A 350pF - - - 11.5 (Dia.) x 5.2mm
RS Stock No. 721-0049
Mfr. Part No.ERZV20D431
BrandPanasonic
MYR7.36
Each (In a Pack of 2)
units
430V 275V 350V 710V 100A - ZNR 21.5mm 10000A - - - - 21.5 (Dia.) x 6.4mm
RS Stock No. 785-8815
Mfr. Part No.ERZE08A751
BrandPanasonic
MYR1.00
Each (In a Pack of 25)
units
750V 460V 615V 1240V 25A 100J ZNR 11.5mm 3500A 130pF - - 9.7mm 10.5 x 9.7mm
RS Stock No. 106-9931
Mfr. Part No.ERZV20D431
BrandPanasonic
MYR3,530.00
1 Bag of 1000
Bag(s)
430V 275V 350V 710V - - ZNR - 10000A - - - - 21.5 (Dia.) x 6.4mm
RS Stock No. 106-9909
Mfr. Part No.ERZV14D241
BrandPanasonic
MYR1,013.50
1 Bag of 1000
Bag(s)
240V 150V 200V 395V - - ZNR - 6000A 700pF - - - 15.5 (Dia.) x 5mm
RS Stock No. 439-596
Mfr. Part No.ERZV10D201
BrandPanasonic
MYR1.263
Each (In a Pack of 10)
units
200V 130V 170V 340V 25A 35J - 11.5mm 3500A 430pF - - 4.8mm 11.5 (Dia.) x 4.8mm
RS Stock No. 785-8960
Mfr. Part No.ERZE14A431
BrandPanasonic
MYR3.50
Each (In a Pack of 5)
units
430V 275V 350V 710V 100A 303J ZNR 16.5mm 10000A 800pF - - 6.2mm 16.5 x 6.2mm
RS Stock No. 204-1946
Mfr. Part No.B72214S0600K101
BrandEPCOS
MYR2.13
Each (In a Pack of 5)
units
100V 60V 85V 165V 50A 17J Standard 15.5mm 4500A 1.65nF - - 4mm 15.5 (Dia.) x 4mm
RS Stock No. 170-2889
Mfr. Part No.B72210S0321K101
BrandEPCOS
MYR0.818
Each (On a Reel of 500)
units
510V 320V 420V 840V 25A 50J Standard 12mm 2500A 170pF - - 5.4mm 12 (Dia.) x 5.4mm
RS Stock No. 316-5958
Mfr. Part No.TNR10V271K
MYR4.422
Each (In a Pack of 5)
units
270V 175V 225V 455V 25A 35J - 11.5mm 3500A 350pF - - 5.2mm 11.5 (Dia.) x 5.2mm
RS Stock No. 170-9984
Mfr. Part No.V480LA80BP
BrandLittelfuse
MYR1.70
Each (In a Bag of 400)
units
670 → 790V 480V 640V 1160V 100A 180J LA 23mm 6500A 550pF - - 7.3mm 23 (Dia.) x 7.3mm
RS Stock No. 162-1422
Mfr. Part No.B72220P3511K101
BrandEPCOS
MYR4.162
Each (On a Reel of 100)
units
820V 510V 670V - 10000A 445J S20 23mm - 600pF - - 9.3mm 23 (Dia.) x 9.3mm
RS Stock No. 178-071
Mfr. Part No.VDRS07H275BSE
BrandVishay
MYR1.724
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. 170-2868
Mfr. Part No.B72220S0950K101
BrandEPCOS
MYR2.27
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. 760-7018
Mfr. Part No.V420LA20AP
BrandLittelfuse
MYR2.428
Each (In a Pack of 5)
units
610 → 748V 420V 560V 1120V 50A 90J LA 17mm 4500A 300pF - - 7.3mm 17 (Dia.) x 7.3mm
RS Stock No. 289-7272
Mfr. Part No.B72220S0151K101
BrandEPCOS
MYR2.604
Each (In a Pack of 5)
units
240V 150V 200V 395V 100A 85J Standard 21.5mm 8000A 1.16nF - - 4.9mm 21.5 (Dia.) x 4.9mm
RS Stock No. 289-7626
Mfr. Part No.B72220S0500K101
BrandEPCOS
MYR3.89
Each (In a Pack of 5)
units
82V 50V 65V 135V 100A 27J Standard 21.5mm 6500A 3.8nF - - 4.3mm 21.5 (Dia.) x 4.3mm
RS Stock No. 163-3891
Mfr. Part No.82550200
MYR7,920.00
1 Reel of 4000
Reel(s)
33V 20V 26V 54V 1A 0.3J WE-VS - 100A 350pF 2mm 1.25mm - -
RS Stock No. 769-1549
Mfr. Part No.B72220P3511K101
BrandEPCOS
MYR7.53
Each (In a Pack of 10)
units
820V 510V 670V - 10000A 445J S20 23mm - 600pF - - 9.3mm 23 (Dia.) x 9.3mm
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