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. 851-8335
Mfr. Part No.MOV-14D471K
BrandBourns
$0.82
Each
units
470V - 385V 775V 50A 125J MOV-14D 16.5mm - 430pF - - 5.4mm 16.5 (Dia.) x 5.4mm
RS Stock No. 711-8133
Mfr. Part No.B72210P2321K101
BrandEPCOS
$0.886
Each (In a Pack of 5)
units
510V 320V 420V 840V 25A 72J AdvanceD-MP 12mm 3500A 170pF - - 6.3mm 12 (Dia.) x 6.3mm
RS Stock No. 204-2157
Mfr. Part No.B72214S0251K101
BrandEPCOS
$0.466
Each (In a Pack of 5)
units
390V 250V 320V 650V 50A 65J Standard 15.5mm 4500A 350pF - - 4.8mm 15.5 (Dia.) x 4.8mm
RS Stock No. 289-6746
Mfr. Part No.B72210S0140K101
BrandEPCOS
$0.916
Each (In a Pack of 5)
units
22V 14V 18V 43V 5A 2J Standard 12mm 500A 5.2nF - - 4.2mm 12 (Dia.) x 4.2mm
RS Stock No. 170-2914
Mfr. Part No.B72210P2321K101
BrandEPCOS
$0.442
Each (On a Reel of 500)
units
510V 320V 420V 840V 25A 72J AdvanceD-MP 12mm 3500A 170pF - - 6.3mm 12 (Dia.) x 6.3mm
RS Stock No. 800-7059
Mfr. Part No.V250LA20AP
BrandLittelfuse
$0.756
Each (In a Pack of 10)
units
429V 250V 330V 650V 50A 72J LA 17mm 4500A 500pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 170-2823
Mfr. Part No.B72210S0140K101
BrandEPCOS
$0.347
Each (On a Reel of 500)
units
22V 14V 18V 43V 5A 2J Standard 12mm 500A 5.2nF - - 4.2mm 12 (Dia.) x 4.2mm
RS Stock No. 173-2642
Mfr. Part No.V250LA20AP
BrandLittelfuse
$0.526
Each (In a Bag of 700)
units
429V 250V 330V 650V 50A 72J LA 17mm 4500A 500pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 851-8341
Mfr. Part No.MOV-14D561K
BrandBourns
$0.89
Each
units
560V - 460V 925V 50A 125J MOV-14D 16.5mm - 360pF - - 6mm 16.5 (Dia.) x 6mm
RS Stock No. 289-7682
Mfr. Part No.B72220S0111K101
BrandEPCOS
$1.552
Each (In a Pack of 5)
units
180V 115V 150V 300V 100A 60J Standard 21.5mm 6500A 1.52nF - - 4.7mm 21.5 (Dia.) x 4.7mm
RS Stock No. 204-2141
Mfr. Part No.B72214S0151K101
BrandEPCOS
$0.782
Each (In a Pack of 5)
units
240V 150V 200V 395V 50A 40J Standard 15.5mm 4500A 570pF - - 4.4mm 15.5 (Dia.) x 4.4mm
RS Stock No. 163-3865
Mfr. Part No.820541311
$1.098
Each (On a Reel of 750)
units
200V 130V 170V 340V 50A 57J WE-VD 16.5mm 4500A 840pF - - - -
RS Stock No. 720-9885
Mfr. Part No.ERZV10D241
BrandPanasonic
$0.563
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. 204-2062
Mfr. Part No.B72207S0271K101
BrandEPCOS
$0.92
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 21J Standard 9mm 1200A 95pF - - 4.4mm 9 (Dia.) x 4.4mm
RS Stock No. 760-6983
Mfr. Part No.V33ZA70P
BrandLittelfuse
$1.464
Each (In a Pack of 5)
units
29.5 → 36.5V 21V 27V 58V 20A 150J ZA 23mm 2000A 13nF - - 5mm 23 (Dia.) x 5mm
RS Stock No. 720-9951
Mfr. Part No.ERZV14D201
BrandPanasonic
$0.904
Each (In a Pack of 5)
units
200V 130V 170V 340V 50A - ZNR 15.5mm 6000A 770pF - - - 15.5 (Dia.) x 4.8mm
RS Stock No. 720-9954
Mfr. Part No.ERZV14D221
BrandPanasonic
$0.904
Each (In a Pack of 5)
units
220V 140V 180V 360V 50A - ZNR 15.5mm 6000A 740pF - - - 15.5 (Dia.) x 4.9mm
RS Stock No. 760-6888
Mfr. Part No.V175LA10AP
BrandLittelfuse
$0.92
Each (In a Pack of 5)
units
247 → 303V 175V 225V 455V 50A 55J LA 17mm 4500A 700pF - - 5.6mm 17 (Dia.) x 5.6mm
RS Stock No. 110-1923
Mfr. Part No.ERZV10D391
BrandPanasonic
$0.273
Each (In a Bag of 1000)
units
390V 250V 320V 650V - - ZNR - 3500A 300pF - - - 11.5 (Dia.) x 5.8mm
RS Stock No. 669-4364
Mfr. Part No.820541311
$1.408
Each (In a Pack of 5)
units
200V 130V 170V 340V 50A 57J WE-VD 16.5mm 4500A 840pF - - - -
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