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. 170-9981
Mfr. Part No.V430CH8T
BrandLittelfuse
MYR2.38
Each (On a Reel of 1000)
units
389 → 473V 275V 369V 710V 10A 8J CH - 250A 50pF 8.51mm 5.26mm 2.03mm 8.51 x 5.26 x 2.03mm
RS Stock No. 172-5217
Mfr. Part No.820552501
MYR1.65
Each (On a Reel of 1500)
units
39V 25V 31V 86V 1A 1.2J WE-VD 7.5mm 100A 830pF - - 4.7mm 7.5 (Dia.) x 4.7mm
RS Stock No. 106-9875
Mfr. Part No.ERZV07D271
BrandPanasonic
MYR0.425
Each (In a Bag of 1000)
units
270V 175V 225V 455V - - ZNR - 1750A 150pF - - - 8.5 (Dia.) x 4.8mm
RS Stock No. 289-7250
Mfr. Part No.B72220S0950K101
BrandEPCOS
MYR3.784
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. 289-7064
Mfr. Part No.B72210S0251K101
BrandEPCOS
MYR2.296
Each (In a Pack of 5)
units
390V 250V 320V 650V 25A 38J Standard 12mm 2500A 215pF - - 4.8mm 12 (Dia.) x 4.8mm
RS Stock No. 669-4308
Mfr. Part No.820552501
MYR2.70
Each (In a Pack of 5)
units
39V 25V 31V 86V 1A 1.2J WE-VD 7.5mm 100A 830pF - - 4.7mm 7.5 (Dia.) x 4.7mm
RS Stock No. 720-9904
Mfr. Part No.ERZV10D431
BrandPanasonic
MYR1.33
Each (In a Pack of 10)
units
430V 275V 350V 710V 25A 80J ZNR 11.5mm 3500A 270pF - - 6mm 11.5 (Dia.) x 6mm
RS Stock No. 760-7018
Mfr. Part No.V420LA20AP
BrandLittelfuse
MYR2.336
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. 769-1533
Mfr. Part No.B72214P2511K101
BrandEPCOS
MYR4.42
Each (In a Pack of 10)
units
820V 510V 670V - 6000A 200J S14 17mm - 300pF - - 8.9mm 17 (Dia.) x 8.9mm
RS Stock No. 720-9958
Mfr. Part No.ERZV14D241
BrandPanasonic
MYR1.918
Each (In a Pack of 5)
units
240V 150V 200V 395V 50A 84J ZNR 15.5mm 6000A 700pF - - 5mm 15.5 (Dia.) x 5mm
RS Stock No. 162-1423
Mfr. Part No.B72220S0350K101
BrandEPCOS
MYR2.234
Each (On a Reel of 250)
units
56V 35V 45V 110V 20A 33J Standard 21.5mm 2000A 8nF - - 5.1mm 21.5 (Dia.) x 5.1mm
RS Stock No. 162-1440
Mfr. Part No.B72220P3381K101
BrandEPCOS
MYR3.62
Each (On a Reel of 250)
units
620V 385V 505V 1025V 100A 320J SuperioR-MP 22.5mm 12000A 445pF - - 8.3mm 22.5 (Dia.) x 8.3mm
RS Stock No. 106-9894
Mfr. Part No.ERZV10D431
BrandPanasonic
MYR0.642
Each (In a Bag of 1000)
units
430V 275V 350V 710V - - ZNR - 3500A 270pF - - - 11.5 (Dia.) x 6mm
RS Stock No. 720-9734
Mfr. Part No.ERZV05D470
BrandPanasonic
MYR1.32
Each (In a Pack of 10)
units
47V 30V 38V 104V 1A - ZNR 7mm 250A 650pF - - - 7 (Dia.) x 4.5mm
RS Stock No. 800-7096
Mfr. Part No.V39ZA6P
BrandLittelfuse
MYR1.846
Each (In a Pack of 10)
units
43V 25V 31V 76V 10A 7.2J ZA 17mm 1000A 7nF - - 5mm 17 (Dia.) x 5mm
RS Stock No. 170-9982
Mfr. Part No.V420LA20AP
BrandLittelfuse
MYR1.215
Each (In a Bag of 600)
units
610 → 748V 420V 560V 1120V 50A 90J LA 17mm 4500A 300pF - - 7.3mm 17 (Dia.) x 7.3mm
RS Stock No. 316-5958
Mfr. Part No.TNR10V271K
MYR6.256
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. 226-8056
Mfr. Part No.ERZV07D471
BrandPanasonic
MYR1.64
Each (In a Pack of 5)
units
470V 300V 385V 775V 10A 42J ZNR 8.5mm 1750A 100pF - - 5.8mm 8.5 (Dia.) x 5.8mm
RS Stock No. 170-2907
Mfr. Part No.B72210P2511K101
BrandEPCOS
MYR3.428
Each (On a Reel of 250)
units
820V 510V 670V - 3500A 92J S10 13mm - 180pF - - 8.8mm 13 (Dia.) x 8.8mm
RS Stock No. 878-1943
Mfr. Part No.V20E320P
BrandLittelfuse
MYR2.323
Each (In a Pack of 400)
units
561V 320V 420V 840V - - UltraMOV - 10000A 750pF - - - 23 (Dia.) x 26.5mm
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