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. 177-5909
Mfr. Part No.EZJS2VB223
BrandPanasonic
MYR2.056
Each (On a Reel of 2000)
units
12V - 6V - - - EZJS - 25A 22nF 2mm 1.25mm - 2 x 1.25 x 1.25mm
RS Stock No. 764-0822
Mfr. Part No.EZJS2VB223
BrandPanasonic
MYR1.72
Each (In a Pack of 10)
units
12V - 6V - - - EZJS - 25A 22nF 2mm 1.25mm - 2 x 1.25 x 1.25mm
RS Stock No. 291-3510
Mfr. Part No.B72240B0381K001
BrandEPCOS
MYR133.76
Each
units
620V 385V 505V 1025V 300A 800J HighE - 40000A 1.9nF 60mm 14mm - -
RS Stock No. 800-7084
Mfr. Part No.V33ZA1P
BrandLittelfuse
MYR1.491
Each (In a Pack of 25)
units
36.5V 20V 26V 65V 2.5A 1.2J ZA 9mm 250A 1.62nF - - 5mm 9 (Dia.) x 5mm
RS Stock No. 110-1926
Mfr. Part No.ERZV14D220
BrandPanasonic
MYR0.87
Each (In a Bag of 1000)
units
22V 14V 18V 43V - - ZNR - 2000A 20nF - - - 15.5 (Dia.) x 4.7mm
RS Stock No. 170-9989
Mfr. Part No.V56ZA8P
BrandLittelfuse
MYR1.218
Each (In a Bag of 700)
units
50 → 62V 35V 45V 110V 10A 10J ZA 17mm 1000A 4.84nF - - 5mm 17 (Dia.) x 5mm
RS Stock No. 878-2012
Mfr. Part No.V20E300P
BrandLittelfuse
MYR3.04
Each (In a Pack of 50)
units
517V 300V 385V 775V - - UltraMOV - 10000A 800pF - - - 23 (Dia.) x 26.5mm
RS Stock No. 170-9924
Mfr. Part No.V510LA40AP
BrandLittelfuse
MYR2.611
Each (In a Bag of 500)
units
910V 510V 675V 1350V 50A 110J LA 17mm 4500A 250pF - - 7.3mm 17 (Dia.) x 7.3mm
RS Stock No. 167-4465
Mfr. Part No.CG0402MLC-05LG
BrandBourns
MYR0.424
Each (On a Reel of 10000)
units
- - 5V 25V - - MLC - - 0.5pF 1.6mm 0.8mm - 1.6 x 0.8mm
RS Stock No. 800-7052
Mfr. Part No.V250LA40AP
BrandLittelfuse
MYR2.791
Each (In a Pack of 10)
units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 289-7711
Mfr. Part No.B72220S0321K101
BrandEPCOS
MYR3.03
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. 162-1431
Mfr. Part No.B72220Q0301K101
BrandEPCOS
MYR4.326
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. 170-2888
Mfr. Part No.B72220S0321K101
BrandEPCOS
MYR2.658
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. 163-3866
Mfr. Part No.820541406
MYR2.04
Each (On a Reel of 750)
units
22V 14V 18V 43V 10A 5.4J WE-VD 16.5mm 1000A 1.196nF - - 5mm 16.5 (Dia.) x 5mm
RS Stock No. 760-6920
Mfr. Part No.V230LA20AP
BrandLittelfuse
MYR2.404
Each (In a Pack of 5)
units
324 → 396V 230V 300V 595V 50A 70J LA 17mm 4500A 550pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 170-2885
Mfr. Part No.B72220S0300K101
BrandEPCOS
MYR2.658
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
MYR4.074
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. 170-9965
Mfr. Part No.V230LA20AP
BrandLittelfuse
MYR1.24
Each (In a Bag of 700)
units
324 → 396V 230V 300V 595V 50A 70J LA 17mm 4500A 550pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 543-5300
Mfr. Part No.V510LA40AP
BrandLittelfuse
MYR4.42
Each (In a Pack of 5)
units
910V 510V 675V 1350V 50A 110J LA 17mm 4500A 250pF - - 7.3mm 17 (Dia.) x 7.3mm
RS Stock No. 170-9999
Mfr. Part No.V250LA40AP
BrandLittelfuse
MYR1.89
Each (In a Bag of 500)
units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm