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. 669-4367
Mfr. Part No.820441311E
HK$5.938
Each (In a Pack of 5)
units
200V 130V 170V 340V 50A 70J WE-VD 16.5mm 6000A 840pF - - - -
RS Stock No. 163-3874
Mfr. Part No.82531040
HK$21,120.00
1 Reel of 4000
Reel(s)
8V 4V 5.5V 17V 10A 0.4J WE-VS - 150A 3.6nF 3.2mm 1.6mm - -
RS Stock No. 669-4305
Mfr. Part No.820551311
HK$3.89
Each (In a Pack of 5)
units
200V 130V 170V 355V 5A 7.1J WE-VD 7.5mm 400A 135pF - - - -
RS Stock No. 172-5223
Mfr. Part No.820475001
HK$5.562
Each (On a Reel of 1500)
units
82V 50V 65V 135V 10A 7J WE-VD 9mm 1750A 640pF - - 3.8mm 9 (Dia.) x 3.8mm
RS Stock No. 669-4440
Mfr. Part No.82551200
HK$6.444
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. 669-4361
Mfr. Part No.820521311
HK$7.39
Each (In a Pack of 5)
units
200V 130V 170V 340V 100A 114J WE-VD 23mm 6500A 1.83nF - - - -
RS Stock No. 669-4430
Mfr. Part No.82531040
HK$6.48
Each (In a Pack of 5)
units
8V 4V 5.5V 17V 10A 0.4J WE-VS - 150A 3.6nF 3.2mm 1.6mm - -
RS Stock No. 163-3858
Mfr. Part No.820412001
HK$4,280.00
1 Reel of 1000
Reel(s)
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. 163-3876
Mfr. Part No.82531400
HK$19,229.60
1 Reel of 4000
Reel(s)
70V 40V 56V 120V 10A 1J WE-VS - 200A 180pF 3.2mm 1.6mm - -
RS Stock No. 163-3860
Mfr. Part No.820441311E
HK$4.96
Each (On a Reel of 750)
units
200V 130V 170V 340V 50A 70J WE-VD 16.5mm 6000A 840pF - - - -
RS Stock No. 163-3859
Mfr. Part No.820422711
HK$6.30
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. 163-3890
Mfr. Part No.82550140
HK$16,502.00
1 Reel of 4000
Reel(s)
24V 14V 18V 40V 1A 0.2J WE-VS - 100A 550pF 2mm 1.25mm - -
RS Stock No. 669-4446
Mfr. Part No.82541140
HK$6.56
Each (In a Pack of 5)
units
24V 14V 18V 45V 1A 0.5J WE-VS - 200A 1.16nF 3.2mm 1.6mm - -
RS Stock No. 669-4402
Mfr. Part No.82536110
HK$5.65
Each (In a Pack of 5)
units
18V 11V 14V 38V 1A 0.1J WE-VS - 38A 100pF 1.6mm 0.8mm - -
RS Stock No. 669-4320
Mfr. Part No.820475001
HK$4.788
Each (In a Pack of 5)
units
82V 50V 65V 135V 10A 7J WE-VD 9mm 1750A 640pF - - 3.8mm 9 (Dia.) x 3.8mm
RS Stock No. 669-4389
Mfr. Part No.82537040
HK$4.71
Each (In a Pack of 5)
units
8V 4V 5.5V 21V 1A 0.04J WE-VS - 20A 220pF 1mm 0.5mm - -
RS Stock No. 669-4355
Mfr. Part No.820543001
HK$6.494
Each (In a Pack of 5)
units
47V 30V 38V 93V 10A 12J WE-VD 16.5mm 1000A 6.42nF - - - -
RS Stock No. 669-4333
Mfr. Part No.820412001
HK$5.468
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. 669-4421
Mfr. Part No.82550110
HK$5.65
Each (In a Pack of 5)
units
18V 11V 14V 30V 1A 0.1J WE-VS - 100A 750pF 2mm 1.25mm - -
RS Stock No. 163-3891
Mfr. Part No.82550200
HK$16,560.00
1 Reel of 4000
Reel(s)
33V 20V 26V 54V 1A 0.3J WE-VS - 100A 350pF 2mm 1.25mm - -