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. 669-4370
Mfr. Part No.820422711
PHP55.80
Each (In a Pack of 5)
units
430V 275V 350V 710V 100A 303J WE-VD 23mm 10000A 860pF - - 5.7mm 23 (Dia.) x 5.7mm
RS Stock No. 240-236
BrandRS PRO
PHP2,513.19
Each
units
- 275V 365V - - 360J High Power - - - 61mm 50mm 40mm 61 x 50 x 40mm
RS Stock No. 240-185
BrandRS PRO
PHP1,437.56
Each
units
610V 420V 560V 1050V - 260J High Power 32mm 10000A 1.71nF - - 5.5mm 32 (Dia.) x 5.5mm
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. 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. 851-8414
Mfr. Part No.MOV-20D821K
BrandBourns
PHP52.48
Each
units
820V - 670V 1355V 100A 265J MOV-20D 23mm - 500pF - - 7.8mm 23 (Dia.) x 7.8mm
RS Stock No. 106-9931
Mfr. Part No.ERZV20D431
BrandPanasonic
PHP46.91
Each (In a Bag of 1000)
units
430V 275V 350V 710V - - ZNR - 10000A - - - - 21.5 (Dia.) x 6.4mm
RS Stock No. 291-3526
Mfr. Part No.B72240B0461K001
BrandEPCOS
PHP1,755.80
Each
units
750V 460V 615V 1240V 300A 1000J HighE - 40000A 1.6nF 60mm 14mm - -
RS Stock No. 720-9885
Mfr. Part No.ERZV10D241
BrandPanasonic
PHP20.495
Each (In a Pack of 10)
units
240V 150V 200V 395V 25A 42J ZNR 11.5mm 3500A 380pF - - 5mm 11.5 (Dia.) x 5mm
RS Stock No. 876-8022
Mfr. Part No.V511BA60
BrandLittelfuse
PHP6,502.78
Each
units
902V 510V 675V 1300V - - BA - 70000A 5nF 100mm - - 100 x 95 x 23.5mm
RS Stock No. 720-9724
Mfr. Part No.ERZV05D180
BrandPanasonic
PHP16.569
Each (In a Pack of 10)
units
18V 11V 14V 40V 1A - ZNR 7mm 250A 1.6nF - - - 7 (Dia.) x 4.5mm
RS Stock No. 170-9904
Mfr. Part No.V130LA20AP
BrandLittelfuse
PHP27.62
Each (In a Bag of 500)
units
228V 130V 175V 340V 100A 70J LA 23mm 6500A 1.9nF - - 5.6mm 23 (Dia.) x 5.6mm
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 - - -
RS Stock No. 110-1978
Mfr. Part No.ERZVF2M471
BrandPanasonic
PHP36.659
Each (In a Bag of 2000)
units
470V 300V 385V 775V - - ZNR - 300A - 8mm - - -
RS Stock No. 851-8405
Mfr. Part No.MOV-20D681K
BrandBourns
PHP37.04
Each
units
680V - 560V 1120V 100A 220J MOV-20D 23mm - 600pF - - 7mm 23 (Dia.) x 7mm
RS Stock No. 876-8066
Mfr. Part No.V220MA2A
BrandLittelfuse
PHP33.252
Each (In a Pack of 50)
units
253V 132V 181V 380V - - MA - 100A 21pF 7mm - - 4.5 (Dia.) x 7mm
RS Stock No. 684-0863
Mfr. Part No.MLV0603E32003T
BrandVishay
PHP23.152
Each (In a Pack of 25)
units
31 → 38V 20V 26V 58V 1A 0.1J MLV - E3 - 3T - 30A 160pF 1.6mm 0.8mm - -
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. 173-9269
Mfr. Part No.MOV-14D431K
BrandBourns
PHP8.852
Each (In a Bag of 600)
units
430V - 350V 710V 50A 115J MOV-14D 16.5mm - 460pF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 240-062
Mfr. Part No.DVS110
PHP2,080.94
Each
units
- 150V 200V - - 80J DVS - 6500A - 75mm 52.5mm 12.5mm 75 x 52.5 x 12.5mm