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. 110-1918
Mfr. Part No.ERZV10D241
BrandPanasonic
HK$1.11
Each (In a Bag of 1000)
units
240V 150V 200V 395V - - ZNR - 3500A 380pF - - - 11.5 (Dia.) x 5mm
RS Stock No. 171-0797
Mfr. Part No.V27ZA1P
BrandLittelfuse
HK$736.03
1 Bag of 1500
Bag(s)
31.1V 17V 22V 53V 2.5A 1J ZA 9mm 250A 1.875nF - - 5mm 9 (Dia.) x 5mm
RS Stock No. 760-7052
Mfr. Part No.V56ZA8P
BrandLittelfuse
HK$3.526
Each (In a Pack of 5)
units
50 → 62V 35V 45V 110V 10A 10J ZA 17mm 1000A 4.84nF - - 5mm 17 (Dia.) x 5mm
RS Stock No. 110-1889
Mfr. Part No.ERZV05D330
BrandPanasonic
HK$0.652
Each (In a Bag of 1000)
units
33V 20V 26V 73V - - ZNR - 250A 1.4nF - - - 7 (Dia.) x 4.5mm
RS Stock No. 878-1722
Mfr. Part No.V131DA40
BrandLittelfuse
HK$329.10
Each
units
225.5V 130V 175V 345V - - DA - 40000A 10nF 62mm - - 62 x 67 x 15mm
RS Stock No. 167-0175
Mfr. Part No.B72520E0140K062
BrandEPCOS
HK$1.793
Each (On a Reel of 3000)
units
- - - - - - - - - - - - - -
RS Stock No. 138-9285
Mfr. Part No.B72214S2321K101
BrandEPCOS
HK$3.87
Each (In a Bag of 25)
units
510V 320Vrms 420V 840V 50A 136J Advanced - 6000A 370pF 15.5mm 19mm 5.8mm 15.5 x 5.8 x 19mm
RS Stock No. 162-1439
Mfr. Part No.B72220P3421K101
BrandEPCOS
HK$5.057
Each (On a Reel of 250)
units
680V 420V 560V 1120V 100A 320J SuperioR-MP 22.5mm 12000A 395pF - - 8.6mm 22.5 (Dia.) x 8.6mm
RS Stock No. 170-2882
Mfr. Part No.B72220S0140K101
BrandEPCOS
HK$4.564
Each (On a Reel of 250)
units
22V 14V 18V 43V 20A 12J Standard 21.5mm 2000A 19nF - - 4.6mm 21.5 (Dia.) x 4.6mm
RS Stock No. 178-093
Mfr. Part No.VDRS07H130BSE
BrandVishay
HK$4.24
Each (In a Pack of 5)
units
205V 130V 170V 340V 10A 17J VDRS - E 9mm 1200A 320pF - - 4.2mm 9 (Dia.) x 4.2mm
RS Stock No. 538-0761
Mfr. Part No.VDRS10P275BSE
BrandVishay
HK$6.23
Each
units
430V 275V 350V 710V 25A 63J NTCLE100E3 13.5mm 2500A 270pF - - 5.4mm 13.5 (Dia.) x 5.4mm
RS Stock No. 106-7974
Mfr. Part No.ERZE14A681
BrandPanasonic
HK$4.587
Each (In a Bag of 1000)
units
680V 420V 560V 1120V - - ZNR - 7500A 600pF - - - 17.5 x 7.5mm
RS Stock No. 690-9922
Mfr. Part No.CG0402MLU-12G
BrandBourns
HK$2.302
Each (In a Pack of 25)
units
- - 12V 25V - - MLU - - 0.05pF 1mm 0.5mm - 1 x 0.5mm
RS Stock No. 669-4412
Mfr. Part No.82550060
HK$5.65
Each (In a Pack of 5)
units
12V 6V 9V 20V 1A 0.1J WE-VS - 80A 1.18nF 2mm 1.25mm - -
RS Stock No. 146-2728
Mfr. Part No.B72590D0160H060
BrandEPCOS
HK$0.956
Each (In a Pack of 50)
units
65V - 16V 290V - - High Speed - - 3pF 1.15mm 0.6mm 0.6mm 1.15 x 0.6 x 0.6mm
RS Stock No. 240-040
Mfr. Part No.DVS024
HK$245.44
Each
units
24V 30V 38V - - 8.8J DVS - 1000A - 75mm 52.5mm 12.5mm 75 x 52.5 x 12.5mm
RS Stock No. 173-9269
Mfr. Part No.MOV-14D431K
BrandBourns
HK$1.455
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. 769-1993
Mfr. Part No.B72650M0271K072
BrandEPCOS
HK$8.50
Each (In a Pack of 5)
units
430V 275Vrms 350V 710V 5A - CU - 400A 50pF 8mm 6.3mm 4.5mm 8 x 6.3 x 4.5mm
RS Stock No. 785-8871
Mfr. Part No.ERZE10A911
BrandPanasonic
HK$2.337
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. 170-2887
Mfr. Part No.B72220S0111K101
BrandEPCOS
HK$4.564
Each (On a Reel of 250)
units
180V 115V 150V 300V 100A 60J Standard 21.5mm 6500A 1.52nF - - 4.7mm 21.5 (Dia.) x 4.7mm
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