SIOV Metal Oxide Varistors

TDK SIOV Metal Oxide Varistors feature a wide operating voltage range of 11 to 1100VRMS. These devices offer high surge current ratings up to 8kA and no derating up to 105°C ambient temperature. The SIOV leaded varistors meet new UL 1449 3rd Edition requirements. TDK SIOV Metal Oxide Varistors applications include lighting, radio and TV equipment, and household appliances.

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Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
Mounting Style
Termination Style
Package/Case
Voltage Rating AC
Voltage Rating DC
Varistor Voltage
Clamping Voltage
Diameter
Peak Surge Current
Surge Energy Rating
Capacitance
Minimum Operating Temperature
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Packaging

TDK Varistors 275VAC 10% 20mm SuperioR
Datasheet
3,308In Stock
Min.: 1
Mult.: 1

Disc Varistor, Multi-Pulse SuperioR 20mm MOVs PCB Mount Radial 275 VAC 350 VDC 430 V 710 V 22.5 mm 12 kA 260 J 630 pF - 40 C + 105 C Bulk
TDK Varistors 320VAC 10% 20mm SuperioR
Datasheet
2,133In Stock
Min.: 1
Mult.: 1

Disc Varistor, Multi-Pulse SuperioR 20mm MOVs PCB Mount Radial 2220 (5750 metric) 320 VAC 420 VDC 510 V 840 V 22.5 mm 12 kA 320 J 540 pF - 40 C + 105 C Bulk
TDK Varistors 35VAC 10% 20mm StandarD
Datasheet
7,219In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 35 VAC 45 VDC 56 V 110 V 20 mm 2 kA 33 J 8000 pF - 40 C + 105 C Bulk
TDK Varistors 385VAC 10% 20mm StandarD
Datasheet
26,753In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 385 VAC 505 VDC 620 V 1.025 kV 20 mm 8 kA 150 J 450 pF - 40 C + 105 C Bulk
TDK Varistors 40VAC 10% 20mm StandarD
Datasheet
5,655In Stock
6,000Expected 3/9/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 40 VAC 56 VDC 68 V 135 V 20 mm 2 kA 37 J 6750 pF - 40 C + 105 C Bulk
TDK Varistors 50VAC 10% 20mm StandarD
Datasheet
7,437In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 50 VAC 65 VDC 82 V 135 V 20 mm 6.5 kA 27 J 3800 pF - 40 C + 105 C Bulk
TDK Varistors 510VAC 10% 20mm StandarD
Datasheet
2,419In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 510 VAC 670 VDC 820 V 1.355 kV 20 mm 2.5 kA 190 J 340 pF - 40 C + 105 C Bulk
TDK Varistors 550VAC 10% 20mm StandarD
Datasheet
7,276In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 550 VAC 745 VDC 910 V 1.5 kV 21.5 mm 6.5 kA 210 J 320 pF - 40 C + 105 C Bulk
TDK Varistors 60VAC 10% 20mm StandarD
Datasheet
5,454In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 60 VAC 85 VDC 100 V 165 V 20 mm 6.5 kA 33 J 3600 pF - 40 C + 105 C Bulk
TDK Varistors 625VAC 10% 20mm StandarD
Datasheet
1,983In Stock
3,800Expected 24/8/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 625 VAC 825 VDC 1 kV 1.65 kV 20 mm 4.5 kA 230 J 280 pF - 40 C + 105 C Bulk
TDK Varistors 95VAC 10% 20mm StandarD
Datasheet
3,635In Stock
4,500Expected 28/8/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 95 VAC 125 VDC 150 V 250 V 21.5 mm 6.5 kA 50 J 2500 pF - 40 C + 105 C Bulk
TDK Varistors 250VAC 10% 25mm SuperioR
Datasheet
724In Stock
Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm MOVs PCB Mount Radial 250 VAC 320 VDC 390 V 650 V 27.5 mm 20 kA 345 J 2100 pF - 40 C + 105 C Bulk
TDK Varistors 385VAC 10% 25mm SuperioR
Datasheet
815In Stock
Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm MOVs PCB Mount Radial 385 VAC 505 VDC 620 V 1.025 kV 27.5 mm 20 kA 600 J 1250 pF - 40 C + 105 C Bulk
TDK Varistors 580VAC 10% 25mm SuperioR
Datasheet
2,912In Stock
Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm MOVs PCB Mount Radial 580 VAC 780 VDC 940 V 1.58 kV 27.5 mm 20 kA 800 J 830 pF - 40 C + 105 C Bulk
TDK Varistors 150VAC 10% 40mm High E
Datasheet
248In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 150 VAC 200 VDC 240 V 395 V 40 kA 360 J 4800 pF - 40 C + 105 C Bulk
TDK Varistors 460VAC 10% 40mm High E
Datasheet
348In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 460 VAC 615 VDC 750 V 1.24 kV 40 kA 960 J 1600 pF - 40 C + 105 C Bulk
TDK Varistors 550VAC 10% 40mm High E
Datasheet
144In Stock
250Expected 14/10/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 550 VAC 745 VDC 910 V 1.5 kV 40 kA 960 J 1400 pF - 40 C + 105 C Bulk
TDK Varistors 130VAC 10% 32mm High E
Datasheet
142In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs Chassis Mount Screw 130 VAC 170 VDC 205 V 340 V 32 mm 25 kA 210 J 4400 pF - 40 C + 105 C Bulk
TDK Varistors 250VAC 10% 32mm High E
Datasheet
196In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs PCB Mount SMD/SMT 250 VAC 320 VDC 390 V 650 V 32 mm 25 kA 330 J 2200 pF - 40 C + 105 C Bulk
TDK Varistors 275VAC 10% 32mm High E
Datasheet
781In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs PCB Mount SMD/SMT 275 VAC 350 VDC 430 V 710 V 32 mm 25 kA 360 J 2000 pF - 40 C + 105 C Bulk
TDK Varistors 460VAC 10% 32mm High E
Datasheet
103In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs PCB Mount SMD/SMT 460 VAC 615 VDC 750 V 1.24 kV 32 mm 25 kA 660 J 1200 pF - 40 C + 105 C Bulk
TDK Varistors 550VAC 10% 32mm High E
Datasheet
178In Stock
160Expected 28/9/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs Chassis Mount Screw 550 VAC 745 VDC 910 V 1.5 kV 32 mm 25 kA 620 J 1000 pF - 40 C + 105 C Bulk
TDK Varistors 130VAC 10% 40mm High E
Datasheet
165In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 150 VAC 170 VDC 205 V 340 V 40 mm 40 kA 310 J 5600 pF - 40 C + 105 C Bulk
TDK Varistors 250VAC 10% 40mm High E
Datasheet
202In Stock
120Expected 17/8/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 250 VAC 320 VDC 390 V 650 V 40 mm 40 kA 490 J 2900 pF - 40 C + 105 C Bulk
TDK Varistors 275VAC 10% 40mm High E
Datasheet
104In Stock
120Expected 19/10/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 275 VAC 350 VDC 430 V 710 V 40 mm 40 kA 550 J 2700 pF - 40 C + 105 C Bulk