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. 878-1722
Mfr. Part No.V131DA40
BrandLittelfuse
TWD1,284.00
Each
units
225.5V 130V 175V 345V - - DA - 40000A 10nF 62mm - - 62 x 67 x 15mm
RS Stock No. 240-185
BrandRS PRO
TWD741.00
Each
units
610V 420V 560V 1050V - 260J High Power 32mm 10000A 1.71nF - - 5.5mm 32 (Dia.) x 5.5mm
RS Stock No. 106-9883
Mfr. Part No.ERZV10D820
BrandPanasonic
TWD6.00
Each (In a Bag of 1000)
units
82V 50V 65V 135V - - ZNR - 3500A 2nF - - - 11.5 (Dia.) x 4.5mm
RS Stock No. 707-9797
Mfr. Part No.DVSC275452TT
TWD5,844.00
Each
units
275V 275V 350V - - - DVSC - 45000A - 36mm 72mm 90mm 36 x 72 x 90mm
RS Stock No. 170-9966
Mfr. Part No.V24ZA50P
BrandLittelfuse
TWD15.50
Each (In a Bag of 500)
units
19.2 → 26V 14V 18V 43V 20A 100J ZA 23mm 2000A 18nF - - 5mm 23 (Dia.) x 5mm
RS Stock No. 170-9909
Mfr. Part No.V150LA20AP
BrandLittelfuse
TWD16.20
Each (In a Bag of 500)
units
268V 150V 200V 395V 100A 80J LA 23mm 6500A 1.6nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 543-4969
Mfr. Part No.V150LA20AP
BrandLittelfuse
TWD28.20
Each (In a Pack of 5)
units
268V 150V 200V 395V 100A 80J LA 23mm 6500A 1.6nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 167-0540
Mfr. Part No.B72660M0250K072
BrandEPCOS
TWD16.90
Each (On a Reel of 1000)
units
39V 25Vrms 31V 77V 2.5A - CU - 250A 1.4nF 10.2mm 8mm 3.2mm 10.2 x 8 x 3.2mm
RS Stock No. 170-9999
Mfr. Part No.V250LA40AP
BrandLittelfuse
TWD16.60
Each (In a Bag of 500)
units
429V 250V 330V 650V 100A 130J LA 23mm 6500A 1nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 878-1980
Mfr. Part No.TMOV20RP275E
BrandLittelfuse
TWD58.30
Each (In a Pack of 10)
units
473V 275V 350V 710V - - TMOV - 10000A 900pF - - - 28 (Dia.) x 31mm
RS Stock No. 721-0046
Mfr. Part No.ERZV20D391
BrandPanasonic
TWD63.50
Each (In a Pack of 2)
units
390V 250V 320V 650V 100A 275J ZNR 21.5mm 10000A 1.1nF - - 6.2mm 21.5 (Dia.) x 6.2mm
RS Stock No. 110-1915
Mfr. Part No.ERZV10D680
BrandPanasonic
TWD6.90
Each (In a Bag of 1000)
units
68V 40V 65V 135V - - ZNR - 1000A 2.8nF - - - 11.5 (Dia.) x 5.3mm
RS Stock No. 167-4467
Mfr. Part No.CG0402MLU-12G
BrandBourns
TWD4.20
Each (On a Reel of 10000)
units
- - 12V 25V - - MLU - - 0.05pF 1mm 0.5mm - 1 x 0.5mm
RS Stock No. 760-6850
Mfr. Part No.V130LA20BP
BrandLittelfuse
TWD28.80
Each (In a Pack of 5)
units
184 → 220V 130V 175V 325V 100A 70J LA 23mm 6500A 1.9nF - - 5.6mm 23 (Dia.) x 5.6mm
RS Stock No. 226-8040
Mfr. Part No.ERZV07D431
BrandPanasonic
TWD12.80
Each (In a Pack of 5)
units
430V 275V 350V 710V 10A 40J ZNR 8.5mm 1750A 120pF - - 5.6mm 8.5 (Dia.) x 5.6mm
RS Stock No. 186-2080
Mfr. Part No.GMOV-20D151K
BrandBourns
TWD63.80
Each (In a Pack of 5)
units
150 Vrms, 200 V dc 150Vrms 200V 420V 10000A 168J GMOV 23mm - 4pF - - 9mm 23 Dia. x 9mm
RS Stock No. 720-9800
Mfr. Part No.ERZV07D560
BrandPanasonic
TWD9.00
Each (In a Pack of 10)
units
56V 35V 45V 110V 2.5A 3.4J ZNR 8.5mm 500A 1.5nF - - 5mm 8.5 (Dia.) x 5mm
RS Stock No. 167-4468
Mfr. Part No.CG0402MLU-05G
BrandBourns
TWD4.60
Each (On a Reel of 10000)
units
- - 5V 25V - - MLU - - 0.05pF 1mm 0.5mm - 1 x 0.5mm
RS Stock No. 204-1851
Mfr. Part No.B72207S0750K101
BrandEPCOS
TWD18.00
Each (In a Pack of 5)
units
120V 75V 100V 200V 10A 5.9J Standard 9mm 1200A 430pF - - 3.6mm 9 (Dia.) x 3.6mm
RS Stock No. 167-0556
Mfr. Part No.CT1206K50G
BrandEPCOS
TWD6.40
Each (On a Reel of 2000)
units
- - - - - - - - - - - - - -