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 (CLP) 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 275VAC 10% 20mm EnergetiQ
Datasheet
1.157In Stock
3.000Expected 8/18/2026
Min.: 1
Mult.: 1

Disc Varistor, EnergetiQ 20mm MOVs PCB Mount Radial 275 VAC 350 VDC 430 V 710 V 20 mm 15 kA 215 J 930 pF - 40 C + 105 C Bulk
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
1.756In Stock
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
3.465In 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
1.738In 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
1.906In Stock
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 9/16/2026
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