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. 720-9973
Mfr. Part No.ERZV14D391
BrandPanasonic
TWD19.20
Each (In a Pack of 5)
units
390V 250V 320V 650V 50A - ZNR 15.5mm 6000A 500pF - - - 15.5 (Dia.) x 5.8mm
RS Stock No. 110-1944
Mfr. Part No.ERZV14D391
BrandPanasonic
TWD8,200.00
1 Bag of 1000
Bag(s)
390V 250V 320V 650V - - ZNR - 6000A 500pF - - - 15.5 (Dia.) x 5.8mm
RS Stock No. 226-8056
Mfr. Part No.ERZV07D471
BrandPanasonic
TWD12.00
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. 720-9737
Mfr. Part No.ERZV05D330
BrandPanasonic
TWD6.90
Each (In a Pack of 10)
units
33V 20V 26V 73V 1A 1.1J ZNR 7mm 250A 1.4nF - - 4.5mm 7 (Dia.) x 4.5mm
RS Stock No. 110-1889
Mfr. Part No.ERZV05D330
BrandPanasonic
TWD2.70
Each (In a Bag of 1000)
units
33V 20V 26V 73V - - ZNR - 250A 1.4nF - - - 7 (Dia.) x 4.5mm
RS Stock No. 785-8960
Mfr. Part No.ERZE14A431
BrandPanasonic
TWD22.20
Each (In a Pack of 5)
units
430V 275V 350V 710V 100A 303J ZNR 16.5mm 10000A 800pF - - 6.2mm 16.5 x 6.2mm
RS Stock No. 785-8954
Mfr. Part No.ERZE14A331
BrandPanasonic
TWD21.40
Each (In a Pack of 5)
units
330V 210V 270V 545V 100A 228J ZNR 16.5mm 10000A 900pF - - 5.6mm 16.5 x 5.6mm
RS Stock No. 439-720
Mfr. Part No.ERZV14D221
BrandPanasonic
TWD15.20
Each (In a Pack of 10)
units
220V 140V 180V 360V 50A 78J - 15.5mm 6000A 740pF - - 4.9mm 15.5 (Dia.) x 4.9mm
RS Stock No. 720-9881
Mfr. Part No.ERZV10D221
BrandPanasonic
TWD11.00
Each (In a Pack of 10)
units
220V 140V 180V 360V 25A - ZNR 11.5mm 3500A 410pF - - - 11.5 (Dia.) x 4.9mm
RS Stock No. 106-9908
Mfr. Part No.ERZV14D221
BrandPanasonic
TWD7,400.00
1 Bag of 1000
Bag(s)
220V 140V 180V 360V - - ZNR - 6000A 740pF - - - 15.5 (Dia.) x 4.9mm
RS Stock No. 106-9887
Mfr. Part No.ERZV10D221
BrandPanasonic
TWD5.20
Each (In a Bag of 1000)
units
220V 140V 180V 360V - - ZNR - 3500A 410pF - - - 11.5 (Dia.) x 4.9mm
RS Stock No. 720-9954
Mfr. Part No.ERZV14D221
BrandPanasonic
TWD10.60
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. 106-9899
Mfr. Part No.ERZV14D470
BrandPanasonic
TWD7.40
Each (In a Bag of 1000)
units
47V 30V 38V 93V - - ZNR - 2000A 6.75nF - - - 15.5 (Dia.) x 5mm
RS Stock No. 110-1929
Mfr. Part No.ERZV14D470
BrandPanasonic
TWD6,270.00
1 Bag of 1000
Bag(s)
47V 30V 38V 93V - - ZNR - 2000A 6.75nF - - - 15.5 (Dia.) x 5mm
RS Stock No. 110-1939
Mfr. Part No.ERZV14D221
BrandPanasonic
TWD7,400.00
1 Bag of 1000
Bag(s)
220V 140V 180V 360V - - ZNR - 6000A 740pF - - - 15.5 (Dia.) x 4.9mm
RS Stock No. 439-603
Mfr. Part No.ERZV10D221
BrandPanasonic
TWD10.40
Each (In a Pack of 10)
units
220V 140V 180V 360V 25A 39J - 11.5mm 3500A 410pF - - 4.9mm 11.5 (Dia.) x 4.9mm
RS Stock No. 720-9920
Mfr. Part No.ERZV14D470
BrandPanasonic
TWD14.40
Each (In a Pack of 5)
units
47V 30V 38V 93V 10A - ZNR 15.5mm 2000A 6.75nF - - - 15.5 (Dia.) x 5mm
RS Stock No. 110-1917
Mfr. Part No.ERZV10D221
BrandPanasonic
TWD5,150.00
1 Bag of 1000
Bag(s)
220V 140V 180V 360V - - ZNR - 3500A 410pF - - - 11.5 (Dia.) x 4.9mm
RS Stock No. 785-8871
Mfr. Part No.ERZE10A911
BrandPanasonic
TWD7.40
Each (In a Pack of 25)
units
910V 550V 745V 1500V 10A 168J ZNR 12.5mm 4500A 220pF - - 9.5mm 12.5 (Dia.) x 9.5mm
RS Stock No. 785-8913
Mfr. Part No.ERZE11A471
BrandPanasonic
TWD6.90
Each (In a Pack of 25)
units
470V 300V 385V 775V 50A 175J ZNR 13mm 6000A 360pF - - 6.6mm 13 x 6.6mm