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. 196-7915
Mfr. Part No.8231726A
HK$3.104
Each (On a Tape of 20)
units
- - 26V 50V - - WE-VE femtoF - - 0.05pF - - - -
RS Stock No. 163-3892
Mfr. Part No.82550250
HK$4.126
Each (On a Reel of 4000)
units
39V 25V 30V 65V 1A 0.3J WE-VS - 100A 310pF 2mm 1.25mm - -
RS Stock No. 196-7911
Mfr. Part No.8231714A
HK$3.104
Each (On a Tape of 20)
units
- - 14V 45V - - WE-VE femtoF - - 0.05pF - - - -
RS Stock No. 669-4314
Mfr. Part No.820571406
HK$6.08
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. 669-4392
Mfr. Part No.82537110
HK$4.71
Each (In a Pack of 5)
units
18V 11V 14V 38V 1A 0.02J WE-VS - 10A 70pF 1mm 0.5mm - -
RS Stock No. 163-3889
Mfr. Part No.82550110
HK$4.573
Each (On a Reel of 4000)
units
18V 11V 14V 30V 1A 0.1J WE-VS - 100A 750pF 2mm 1.25mm - -
RS Stock No. 196-7908
Mfr. Part No.8231614A
HK$3.276
Each (On a Reel of 5000)
units
- - 14V 45V - - WE-VE femtoF - - 0.05pF - - - -
RS Stock No. 762-2111
Mfr. Part No.820999
HK$1,222.62
Each
units
- - - - - - - - - - - - - -
RS Stock No. 163-3882
Mfr. Part No.82537110
HK$3.875
Each (On a Reel of 10000)
units
18V 11V 14V 38V 1A 0.02J WE-VS - 10A 70pF 1mm 0.5mm - -
RS Stock No. 163-3859
Mfr. Part No.820422711
HK$6.59
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. 669-4406
Mfr. Part No.82536140
HK$5.65
Each (In a Pack of 5)
units
25V 14V 18V 45V 1A 0.1J WE-VS - 30A 100pF 1.6mm 0.8mm - -
RS Stock No. 196-7909
Mfr. Part No.8231614A
HK$4.598
Each (On a Tape of 10)
units
- - 14V 45V - - WE-VE femtoF - - 0.05pF - - - -
RS Stock No. 669-4434
Mfr. Part No.82541110
HK$6.59
Each (In a Pack of 5)
units
18V 11V 14V 35V 1A 0.5J WE-VS - 200A 1.5nF 3.2mm 1.6mm - -
RS Stock No. 669-4437
Mfr. Part No.82550250
HK$5.65
Each (In a Pack of 5)
units
39V 25V 30V 65V 1A 0.3J WE-VS - 100A 310pF 2mm 1.25mm - -
RS Stock No. 196-7907
Mfr. Part No.8231706A
HK$3.104
Each (On a Tape of 20)
units
- - 6V 40V - - WE-VE femtoF - - 0.05pF - - - -
RS Stock No. 669-4308
Mfr. Part No.820552501
HK$5.65
Each (In a Pack of 5)
units
39V 25V 31V 86V 1A 1.2J WE-VD 7.5mm 100A 830pF - - 4.7mm 7.5 (Dia.) x 4.7mm
RS Stock No. 172-5217
Mfr. Part No.820552501
HK$3.45
Each (On a Reel of 1500)
units
39V 25V 31V 86V 1A 1.2J WE-VD 7.5mm 100A 830pF - - 4.7mm 7.5 (Dia.) x 4.7mm
RS Stock No. 163-3880
Mfr. Part No.82537040
HK$4.506
Each (On a Reel of 10000)
units
8V 4V 5.5V 21V 1A 0.04J WE-VS - 20A 220pF 1mm 0.5mm - -
RS Stock No. 163-3884
Mfr. Part No.82541140
HK$4.975
Each (On a Reel of 4000)
units
24V 14V 18V 45V 1A 0.5J WE-VS - 200A 1.16nF 3.2mm 1.6mm - -
RS Stock No. 669-4301
Mfr. Part No.820554001
HK$5.65
Each (In a Pack of 5)
units
68V 40V 56V 150V 1A 2.1J WE-VD 7.5mm 100A 500pF - - - -