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 (JPY) 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
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Packaging
TDK Varistors 300VAC 10% 20mm EnergetiQ
Datasheet
30In Stock
1,500Expected 9/21/2026
Min.: 1
Mult.: 1

Disc Varistor, EnergetiQ 20mm MOVs PCB Mount Radial 300 VAC 385 VDC 470 V 775 V 20 mm 15 kA 235 J 850 pF - 40 C + 105 C Bulk

TDK Varistors 25VAC 10% 20mm StandarD
Datasheet
256In Stock
2,000Expected 10/6/2026
Min.: 1
Mult.: 1
: 2,000

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 25 VAC 31 VDC 39 V 77 V 20 mm 2 kA 22 J 0.0111 uF - 40 C + 105 C Reel, Cut Tape

TDK Varistors 275VAC 10% 20mm StandarD
Datasheet
1,825In Stock
Min.: 1
Mult.: 1
: 4,000

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 275 VAC 350 VDC 430 V 710 V 20 mm 8 kA 151 J 850 pF - 40 C + 105 C Reel, Cut Tape

TDK Varistors 300VAC 10% 20mm StandarD
Datasheet
1,264In Stock
Min.: 1
Mult.: 1
: 1,500

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 300 VAC 385 VDC 470 V 775 V 20 mm 8 kA 173 J 780 pF - 40 C + 105 C Reel, Cut Tape

TDK Varistors 320VAC 10% 20mm StandarD
Datasheet
1,217In Stock
Min.: 1
Mult.: 1
: 4,000

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 320 VAC 420 VDC 510 V 840 V 21.5 mm 8 kA 184 J 720 pF - 40 C + 105 C Reel, Cut Tape
TDK Varistors 115VAC 10% 20mm StandarD
Datasheet
1,710In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 125 VAC 150 VDC 180 V 300 V 20 mm 6.5 kA 60 J 1520 pF - 40 C + 105 C Bulk

TDK Varistors 14VAC 10% 20mm AEC-Q200
Datasheet
358In Stock
Min.: 1
Mult.: 1

Disc Varistor, Auto-Grade 20mm MOVs PCB Mount Radial 14 VAC 16 VDC 22 V 43 V 23 mm 2 kA 12 J 0.019 uF - 40 C + 105 C AEC-Q100 Bulk
TDK Varistors 140VAC 10% 20mm StandarD
Datasheet
1,454In Stock
1,500Expected 8/18/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 140 VAC 180 VDC 220 V 360 V 20 mm 8 kA 78 J 1240 pF - 40 C + 105 C Bulk

TDK Varistors 150VAC 10% 20mm StandarD
Datasheet
716In Stock
Min.: 1
Mult.: 1
: 2,000

B722xxS1 MOVs PCB Mount Radial 150 VAC 200 VDC 240 V 395 V 20 mm 8 kA 85 J 1550 pF - 40 C + 105 C Reel, Cut Tape
TDK Varistors 17VAC 10% 20mm StandarD
Datasheet
1,551In Stock
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 17 VAC 22 VDC 27 V 53 V 20 mm 2 kA 14 J 0.0156 uF - 40 C + 105 C Bulk
TDK Varistors 175VAC 10% 20mm StandarD
Datasheet
3,457In Stock
8,400Expected 10/5/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 175 VAC 225 VDC 270 V 455 V 20 mm 8 kA 98 J 1000 pF - 40 C + 105 C Bulk
TDK Varistors 130VAC 10% 20mm AdvanceD
Datasheet
728In Stock
16,500Expected 9/8/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 130 VAC 170 VDC 205 V 340 V 20 mm 10 kA 100 J 1340 pF - 40 C + 105 C Bulk
TDK Varistors 150VAC 10% 20mm AdvanceD
Datasheet
1,726In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 150 VAC 200 VDC 240 V 395 V 21.5 mm 1 kA 120 J 1550 pF - 40 C + 105 C Bulk
TDK Varistors 175VAC 10% 20mm AdvanceD
Datasheet
2,047In Stock
4,131Expected 8/31/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 175 VAC 225 VDC 270 V 455 V 21.5 mm 10 kA 135 J 1000 pF - 40 C + 105 C Bulk
TDK Varistors 230VAC 10% 20mm AdvanceD
Datasheet
109In Stock
1,500Expected 9/21/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 230 VAC 300 VDC 360 V 595 V 21.5 mm 10 kA 180 J 760 pF - 40 C + 105 C Bulk
TDK Varistors 250VAC 10% 20mm AdvanceD
Datasheet
721In Stock
3,000Expected 9/14/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 250 VAC 320 VDC 390 V 650 V 21.5 mm 1 kA 195 J 940 pF - 40 C + 105 C Bulk
TDK Varistors 320VAC 10% 20mm AdvanceD
Datasheet
2,959In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 320 VAC 420 VDC 510 V 840 V 21.5 mm 1 kA 273 J 720 pF - 40 C + 105 C Bulk
TDK Varistors 385VAC 10% 20mm AdvanceD
Datasheet
906In Stock
7,200Expected 10/6/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 385 VAC 505 VDC 620 V 1.025 kV 21.5 mm 10 kA 273 J 600 pF - 40 C + 105 C Bulk
TDK Varistors 460VAC 10% 20mm AdvanceD
Datasheet
1,936In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 460 VAC 615 VDC 750 V 1.24 kV 21.5 mm 10 kA 300 J 380 pF - 40 C + 105 C Bulk
TDK Varistors 625VAC 10% 20mm AdvanceD
Datasheet
394In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 20mm MOVs PCB Mount Radial 625 VAC 825 VDC 1 kV 1.65 kV 21.5 mm 10 kA 400 J 280 pF - 40 C + 105 C Bulk
TDK Varistors 250VAC 10% 20mm SuperioR
Datasheet
759In Stock
Min.: 1
Mult.: 1

Disc Varistor, Multi-Pulse SuperioR 20mm MOVs PCB Mount Radial 250 VAC 320 VDC 390 V 650 V 22.5 mm 12 kA 250 J 700 pF - 40 C + 105 C Bulk
TDK Varistors 300VAC 10% 20mm SuperioR
Datasheet
746In Stock
Min.: 1
Mult.: 1

Disc Varistor, Multi-Pulse SuperioR 20mm MOVs PCB Mount Radial 2220 (5750 metric) 300 VAC 385 VDC 470 V 775 V 22.5 mm 12 kA 320 J 580 pF - 40 C + 105 C Bulk
TDK Varistors 420VAC 10% 20mm StandarD
Datasheet
1,891In Stock
12,000Expected 10/19/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 420 VAC 560 VDC 680 V 1.12 kV 20 mm 8 kA 175 J 420 pF - 40 C + 105 C Bulk
TDK Varistors 460VAC 10% 20mm StandarD
Datasheet
697In Stock
2,400Expected 10/8/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 460 VAC 615 VDC 750 V 1.24 kV 20 mm 8 kA 195 J 380 pF - 40 C + 105 C Bulk
TDK Varistors 510VAC 10% 20mm StandarD
Datasheet
1,619In 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