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 (TWD) 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
Maximum Operating Temperature
Qualification
Packaging
TDK Varistors 50VAC 10% 14mm StandarD
Datasheet
16,309In Stock
Min.: 1
Mult.: 1

Disc Varistor,StandarD 14mm MOVs PCB Mount Radial 50 VAC 65 VDC 82 V 135 V 14 mm 4.5 kA 15 J 1.8 nF - 40 C + 105 C Bulk
TDK Varistors 680VAC 10% 14mm StandarD
Datasheet
8,687In Stock
Min.: 1
Mult.: 1

Disc Varistor,StandarD 14mm MOVs PCB Mount Radial 680 VAC 895 VDC 1.1 kV 1.815 kV 14 mm 4.5 kA 140 J 180 pF - 40 C + 105 C Bulk
TDK Varistors 75VAC 10% 14mm StandarD
Datasheet
8,926In Stock
9,000Expected 10/28/2026
Min.: 1
Mult.: 1

Disc Varistor,StandarD 14mm MOVs PCB Mount Radial 75 VAC 100 VDC 120 V 200 V 14 mm 4.5 kA 20 J 1.37 nF - 40 C + 105 C Bulk
TDK Varistors 275VAC 10% 20mm SuperioR MP
Datasheet
2,390In Stock
3,000Expected 10/1/2026
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 280 J 1.15 nF - 40 C + 105 C Bulk
TDK Varistors 300VAC 10% 20mm SuperioR MP
Datasheet
2,791In Stock
Min.: 1
Mult.: 1

Disc Varistor, Multi-Pulse SuperioR 20mm MOVs PCB Mount Radial 300 VAC 385 VDC 470 V 775 V 22.5 mm 12 kA 305 J 1.05 nF - 40 C + 105 C Bulk
TDK Varistors 440VAC 10% 20mm StandarD
Datasheet
4,018In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 440 VAC 585 VDC 715 V 1.18 kV 20 mm 8 kA 185 J 350 pF - 40 C + 105 C Bulk

TDK Varistors 30VAC 10% 20mm AEC-Q200
Datasheet
1,116In Stock
1,500Expected 9/21/2026
Min.: 1
Mult.: 1

Disc Varistor, Auto-Grade 20mm MOVs PCB Mount Radial 30 VAC 34 VDC 47 V 93 V 23 mm 2 kA 100 J 9.4 nF - 40 C + 105 C AEC-Q100 Bulk
TDK Varistors 150VAC 10% 20mm StandarD
Datasheet
3,323In Stock
2,177Expected 10/8/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 150 VAC 200 VDC 240 V 395 V 20 mm 8 kA 85 J 1.16 nF - 40 C + 105 C Bulk
TDK Varistors 210VAC 10% 20mm AdvanceD
Datasheet
4,133In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 210 VAC 270 VDC 330 V 10 kA 160 J 835 pF - 40 C + 105 C Bulk
TDK Varistors 275VAC 10% 20mm AdvanceD
Datasheet
3,310In Stock
8,400Expected 9/21/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 275 VAC 350 VDC 430 V 710 V 21.5 mm 1 kA 215 J 850 pF - 40 C + 105 C Bulk
TDK Varistors 230VAC 10% 20mm StandarD
Datasheet
3,934In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 230 VAC 300 VDC 360 V 595 V 20 mm 8 kA 130 J 760 pF - 40 C + 105 C Bulk
TDK Varistors 420VAC 10% 20mm AdvanceD
Datasheet
6,621In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 420 VAC 560 VDC 680 V 1.12 kV 21.5 mm 10 kA 273 J 420 pF - 40 C + 105 C Bulk
TDK Varistors 25VAC 10% 20mm StandarD
Datasheet
3,554In Stock
7,500Expected 9/30/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 25 VAC 31 VDC 39 V 77 V 20 mm 2 kA 22 J 11.1 nF - 40 C + 105 C Bulk
TDK Varistors 510VAC 10% 20mm AdvanceD
Datasheet
10,126In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 510 VAC 670 VDC 820 V 1.355 kV 21.5 mm 10 kA 325 J 340 pF - 40 C + 105 C Bulk
TDK Varistors 250VAC 10% 20mm StandarD
Datasheet
5,780In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 250 VAC 320 VDC 390 V 650 V 20 mm 8 kA 140 J 700 pF - 40 C + 105 C Bulk

TDK Varistors 550VAC 10% 20mm AdvanceD
Datasheet
4,379In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 550 VAC 745 VDC 910 V 1.5 kV 21.5 mm 10 kA 360 J 320 pF - 40 C + 105 C Bulk
TDK Varistors 680VAC 10% 20mm AdvanceD
Datasheet
2,209In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 680 VAC 895 VDC 1.1 kV 1.815 kV 21.5 mm 10 kA 440 J 250 pF - 40 C + 105 C Bulk
TDK Varistors 275VAC 10% 20mm StandarD
Datasheet
23,464In Stock
16,800Expected 10/19/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 275 VAC 350 VDC 430 V 710 V 20 mm 8 kA 151 J 630 pF - 40 C + 105 C Bulk
TDK Varistors 30VAC 10% 20mm StandarD
Datasheet
3,299In Stock
12,600On Order
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 30 VAC 38 VDC 47 V 93 V 20 mm 2 kA 26 J 9.35 nF - 40 C + 105 C Bulk
TDK Varistors 300VAC 10% 20mm StandarD
Datasheet
23,244In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 300 VAC 385 VDC 470 V 775 V 20 mm 8 kA 173 J 580 pF - 40 C + 105 C Bulk

TDK Varistors 275VAC 10% 20mm SuperioR
Datasheet
3,266In 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
2,023In 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
7,108In 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 8 nF - 40 C + 105 C Bulk
TDK Varistors 385VAC 10% 20mm StandarD
Datasheet
17,153In 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
5,023In Stock
6,000Expected 10/8/2026
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 6.75 nF - 40 C + 105 C Bulk