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. 106-9929
Mfr. Part No.ERZV20D471
BrandPanasonic
PHP44.352
Each (In a Bag of 1000)
units
470V 300V 385V 775V - - ZNR - 10000A 900pF - - - 21.5 (Dia.) x 6.6mm
RS Stock No. 240-236
BrandRS PRO
PHP2,519.72
Each
units
- 275V 365V - - 360J High Power - - - 61mm 50mm 40mm 61 x 50 x 40mm
RS Stock No. 721-0049
Mfr. Part No.ERZV20D431
BrandPanasonic
PHP113.935
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. 173-1279
Mfr. Part No.VDRS10P275BSE
BrandVishay
PHP24.486
Each (In a Bag of 250)
units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 229-056
Mfr. Part No.VDRS10P275BSE
BrandVishay
PHP41.16
Each (In a Pack of 5)
units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 170-2859
Mfr. Part No.B72214S0400K101
BrandEPCOS
PHP12.138
Each (On a Reel of 500)
units
68V 40V 56V 135V 10A 13J Standard 15.5mm 1000A 3.55nF - - 4.9mm 15.5 (Dia.) x 4.9mm
RS Stock No. 775-2711
Mfr. Part No.CT0201S4ACC2G
BrandEPCOS
PHP12.378
Each (In a Pack of 100)
units
17V 4V 5.5V 33V 1A - - - 1A 10pF 0.6mm 0.3mm - 0.6 x 0.3 x 0.3mm
RS Stock No. 476-9450
Mfr. Part No.Z15D471
BrandSEMITEC
PHP113.19
Each (In a Pack of 10)
units
470V 300V 385V 775V 50A 175J - 16mm 4500A 400pF - - 9.1mm 16 (Dia.) x 9.1mm
RS Stock No. 106-9876
Mfr. Part No.ERZV07D391
BrandPanasonic
PHP5.712
Each (In a Bag of 1000)
units
390V 250V 320V 650V - - ZNR - 1750A 130pF - - - 8.5 (Dia.) x 5.4mm
RS Stock No. 240-179
BrandRS PRO
PHP1,093.08
Each
units
400V 275V 370V 680V - 180J High Power 32mm 10000A 1.9nF - - 4mm 32 (Dia.) x 4mm
RS Stock No. 178-087
Mfr. Part No.VDRS05C275BSE
BrandVishay
PHP23.152
Each (In a Pack of 5)
units
430V 275V 350V 695V 5A 12J VDRS - E 7mm 400A 55pF - - 4.9mm 7 (Dia.) x 4.9mm
RS Stock No. 170-2855
Mfr. Part No.B72210S0350K101
BrandEPCOS
PHP7.508
Each (On a Reel of 500)
units
56V 35V 45V 110V 5A 5.4J Standard 12mm 500A 2.4nF - - 4.4mm 12 (Dia.) x 4.4mm
RS Stock No. 800-7068
Mfr. Part No.V275LA20AP
BrandLittelfuse
PHP32.294
Each (In a Pack of 10)
units
473V 275V 369V 710V 50A 75J LA 17mm 4500A 450pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 167-0494
Mfr. Part No.B72260B0461K001
BrandEPCOS
PHP4,569.971
Each (In a Box of 10)
units
750V 460V 615V 1240V 500A 1650J HighE - 70000A 3.9nF 100mm 100mm 24mm 100 x 100 x 24mm
RS Stock No. 720-9872
Mfr. Part No.ERZV10D101
BrandPanasonic
PHP18.732
Each (In a Pack of 10)
units
100V 60V 85V 165V 25A 17J ZNR 11.5mm 3500A 1.7nF - - 4.7mm 11.5 (Dia.) x 4.7mm
RS Stock No. 110-1919
Mfr. Part No.ERZV10D201
BrandPanasonic
PHP8.331
Each (In a Bag of 1000)
units
200V 130V 170V 340V - - ZNR - 3500A 430pF - - - 11.5 (Dia.) x 4.8mm
RS Stock No. 204-2214
Mfr. Part No.B72220S0421K101
BrandEPCOS
PHP58.28
Each (In a Pack of 5)
units
680V 420V 560V 1120V 100A 175J Standard 21.5mm 8000A 420pF - - 6.5mm 21.5 (Dia.) x 6.5mm
RS Stock No. 226-8040
Mfr. Part No.ERZV07D431
BrandPanasonic
PHP19.552
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 40J ZNR 8.5mm 1750A 120pF - - 5.6mm 8.5 (Dia.) x 5.6mm
RS Stock No. 170-2863
Mfr. Part No.B72210S0301K101
BrandEPCOS
PHP11.776
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. 106-9937
Mfr. Part No.ERZVF2M101
BrandPanasonic
PHP34.52
Each (In a Bag of 2000)
units
100V 60V 85V 165V - - ZNR - 600A - 8mm - - -