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
£0.842
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. 163-3859
Mfr. Part No.820422711
£0.588
Each (On a Reel of 500)
Units
430V 275V 350V 710V 100A 303J WE-VD 23mm 10000A 860pF - - 5.7mm 23 (Dia.) x 5.7mm
RS Stock No. 669-4351
Mfr. Part No.820542501
£0.728
Each (In a Pack of 5)
Units
39V 25V 31V 77V 10A 9.4J WE-VD 16.5mm 1000A 7.62nF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 163-3867
Mfr. Part No.820542501
£0.454
Each (On a Reel of 750)
Units
39V 25V 31V 77V 10A 9.4J WE-VD 16.5mm 1000A 7.62nF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 163-3894
Mfr. Part No.82551200
£1,987.40
1 Reel of 4000
Reel(s)
33V 20V 26V 54V 1A 0.5J WE-VS - 100A 490pF 3.2mm 1.6mm - -
RS Stock No. 669-4440
Mfr. Part No.82551200
£0.696
Each (In a Pack of 5)
Units
33V 20V 26V 54V 1A 0.5J WE-VS - 100A 490pF 3.2mm 1.6mm - -
RS Stock No. 172-5216
Mfr. Part No.820554001
£0.422
Each (On a Reel of 1500)
Units
68V 40V 56V 150V 1A 2.1J WE-VD 7.5mm 100A 500pF - - - -
RS Stock No. 669-4301
Mfr. Part No.820554001
£0.55
Each (In a Pack of 5)
Units
68V 40V 56V 150V 1A 2.1J WE-VD 7.5mm 100A 500pF - - - -
RS Stock No. 669-4314
Mfr. Part No.820571406
£0.60
Each (In a Pack of 5)
Units
22V 14V 18V 43V 2.5A 1.4J WE-VD 9mm 250A 2.39nF - - 4.5mm 9 (Dia.) x 4.5mm
RS Stock No. 163-3870
Mfr. Part No.820571406
£573.30
Each (On a Reel of 1500)
Units
22V 14V 18V 43V 2.5A 1.4J WE-VD 9mm 250A 2.39nF - - 4.5mm 9 (Dia.) x 4.5mm
RS Stock No. 669-4459
Mfr. Part No.82541250
£0.642
Each (In a Pack of 5)
Units
39V 25V 30V 72V 1A 1J WE-VS - 200A 620pF 3.2mm 1.6mm - -
RS Stock No. 163-3885
Mfr. Part No.82541250
£1,987.40
1 Reel of 4000
Reel(s)
39V 25V 30V 72V 1A 1J WE-VS - 200A 620pF 3.2mm 1.6mm - -
RS Stock No. 669-4452
Mfr. Part No.82541300
£0.696
Each (In a Pack of 5)
Units
47V 30V 38V 85V 1A 1.1J WE-VS - 200A 550pF 3.2mm 1.6mm - -
RS Stock No. 163-3886
Mfr. Part No.82541300
£1,987.40
1 Reel of 4000
Reel(s)
47V 30V 38V 85V 1A 1.1J WE-VS - 200A 550pF 3.2mm 1.6mm - -
RS Stock No. 669-4367
Mfr. Part No.820441311E
£0.722
Each (In a Pack of 5)
Units
200V 130V 170V 340V 50A 70J WE-VD 16.5mm 6000A 840pF - - - -
RS Stock No. 163-3860
Mfr. Part No.820441311E
£0.431
Each (On a Reel of 750)
Units
200V 130V 170V 340V 50A 70J WE-VD 16.5mm 6000A 840pF - - - -
RS Stock No. 162-1346
Mfr. Part No.820423211
£0.472
Each (On a Reel of 500)
Units
510V 320V 418V 842V 100A 382J WE-VD 23mm 10000A 760pF - - - -
RS Stock No. 669-4373
Mfr. Part No.820423211
£0.608
Each (In a Pack of 5)
Units
510V 320V 418V 842V 100A 382J WE-VD 23mm 10000A 760pF - - - -
RS Stock No. 669-4333
Mfr. Part No.820412001
£0.288
Each (In a Pack of 5)
Units
33V 20V 26V 65V 5A 4.8J WE-VD 12.5mm 1000A 4.25nF - - 5.1mm 12.5 (Dia.) x 5.1mm
RS Stock No. 163-3858
Mfr. Part No.820412001
£0.402
Each (On a Reel of 1000)
Units
33V 20V 26V 65V 5A 4.8J WE-VD 12.5mm 1000A 4.25nF - - 5.1mm 12.5 (Dia.) x 5.1mm