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. 851-8417
Mfr. Part No.MOV-20D911K
BrandBourns
MYR3.85
Each
units
910V - 745V 1500V 100A 282J MOV-20D 23mm - 440pF - - 8.2mm 23 (Dia.) x 8.2mm
RS Stock No. 851-8322
Mfr. Part No.MOV-14D431K
BrandBourns
MYR1.88
Each
units
430V - 350V 710V 50A 115J MOV-14D 16.5mm - 460pF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 173-9269
Mfr. Part No.MOV-14D431K
BrandBourns
MYR0.703
Each (In a Bag of 600)
units
430V - 350V 710V 50A 115J MOV-14D 16.5mm - 460pF - - 5.2mm 16.5 (Dia.) x 5.2mm
RS Stock No. 690-9912
Mfr. Part No.CG0402MLC-05LG
BrandBourns
MYR1.156
Each (In a Pack of 25)
units
- - 5V 25V - - MLC - - 0.5pF 1.6mm 0.8mm - 1.6 x 0.8mm
RS Stock No. 167-4465
Mfr. Part No.CG0402MLC-05LG
BrandBourns
MYR0.583
Each (On a Reel of 10000)
units
- - 5V 25V - - MLC - - 0.5pF 1.6mm 0.8mm - 1.6 x 0.8mm
RS Stock No. 851-8335
Mfr. Part No.MOV-14D471K
BrandBourns
MYR1.88
Each
units
470V - 385V 775V 50A 125J MOV-14D 16.5mm - 430pF - - 5.4mm 16.5 (Dia.) x 5.4mm
RS Stock No. 851-8382
Mfr. Part No.MOV-20D431K
BrandBourns
MYR2.28
Each
units
430V - 350V 710V 100A 190J MOV-20D 23mm - 930pF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 851-8341
Mfr. Part No.MOV-14D561K
BrandBourns
MYR2.05
Each
units
560V - 460V 925V 50A 125J MOV-14D 16.5mm - 360pF - - 6mm 16.5 (Dia.) x 6mm
RS Stock No. 851-8391
Mfr. Part No.MOV-20D470K
BrandBourns
MYR2.49
Each
units
47V - 38V 93V 20A 33J MOV-20D 23mm - 7.4nF - - 4.6mm 23 (Dia.) x 4.6mm
RS Stock No. 167-4420
Mfr. Part No.CG0603MLC-05LE
BrandBourns
MYR0.38
Each (On a Reel of 5000)
units
- - 5V 25V - - MLC - - 0.5pF 1.6mm 0.8mm - 1.6 x 0.8mm
RS Stock No. 186-2060
Mfr. Part No.GMOV-20D251K
BrandBourns
MYR5.76
Each (In a Bag of 250)
units
250 Vrms, 320 V dc 250Vrms 320V 675V 10000A 275J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 186-2125
Mfr. Part No.GMOV-14D171K
BrandBourns
MYR10.49
Each (In a Pack of 5)
units
175 Vrms, 225 V dc 175Vrms 225V 470V 6000A 99J GMOV 16.5mm - 4pF - - 8mm 16.5 Dia. x 8mm
RS Stock No. 690-9922
Mfr. Part No.CG0402MLU-12G
BrandBourns
MYR1.441
Each (In a Pack of 25)
units
- - 12V 25V - - MLU - - 0.05pF 1mm 0.5mm - 1 x 0.5mm
RS Stock No. 186-2158
Mfr. Part No.GMOV-20D131K
BrandBourns
MYR10.26
Each (In a Pack of 5)
units
130 Vrms, 170 V dc 130Vrms 170V 360V 10000A 140J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 186-2146
Mfr. Part No.GMOV-20D500K
BrandBourns
MYR10.49
Each (In a Pack of 5)
units
50 Vrms, 65 V dc 50Vrms 65V 150V 10000A 56J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 186-2140
Mfr. Part No.GMOV-14D321K
BrandBourns
MYR11.16
Each (In a Pack of 5)
units
320 Vrms, 415 V dc 320Vrms 415V 875V 6000A 180J GMOV 16.5mm - 4pF - - 8mm 16.5 Dia. x 8mm
RS Stock No. 186-2119
Mfr. Part No.GMOV-14D141K
BrandBourns
MYR10.49
Each (In a Pack of 5)
units
140 Vrms, 180 V dc 140Vrms 180V 380V 6000A 78J GMOV 16.5mm - 4pF - - 8mm 16.5 Dia. x 8mm
RS Stock No. 186-2092
Mfr. Part No.GMOV-20D271K
BrandBourns
MYR11.43
Each (In a Pack of 5)
units
275 Vrms, 350 V dc 275Vrms 350V 730V 10000A 305J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 186-2143
Mfr. Part No.GMOV-20D450K
BrandBourns
MYR10.49
Each (In a Pack of 5)
units
45 Vrms, 56 V dc 45Vrms 56V 150V 10000A 49J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 851-8414
Mfr. Part No.MOV-20D821K
BrandBourns
MYR3.85
Each
units
820V - 670V 1355V 100A 265J MOV-20D 23mm - 500pF - - 7.8mm 23 (Dia.) x 7.8mm