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 75VAC 10% 20mm StandarD
Datasheet
2,894In Stock
4,200Expected 9/16/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 75 VAC 100 VDC 120 V 200 V 20 mm 6.5 kA 40 J 2.9 nF - 40 C + 105 C Bulk
TDK Varistors 320VAC 10% 20mm 125 DegC AdvanceD
Datasheet
2,625In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 125C, 85C/85%RH 20mm MOVs PCB Mount Radial 320 VAC 420 VDC 510 V 840 V 23.5 mm 10 kA 273 J 720 pF - 40 C + 125 C Bulk
TDK Varistors 550VAC 10% 40mm High E
Datasheet
41In Stock
250Expected 11/16/2026
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 1.4 nF - 40 C + 105 C Bulk
TDK Varistors 320VAC 10% 32mm High E
Datasheet
53In Stock
40Expected 8/24/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs PCB Mount SMD/SMT 320 VAC 420 VDC 510 V 840 V 32 mm 25 kA 430 J 1.7 nF - 40 C + 105 C Bulk
TDK Varistors 385VAC 10% 32mm High E
Datasheet
31In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 32mm MOVs PCB Mount SMD/SMT 385 VAC 505 VDC 620 V 1.025 kV 32 mm 25 kA 550 J 1.4 nF - 40 C + 105 C Bulk
TDK Varistors 320VAC 10% 40mm High E
Datasheet
11In Stock
40Expected 10/8/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 40mm MOVs Chassis Mount Screw 320 VAC 420 VDC 510 V 840 V 40 mm 40 kA 640 J 2.3 nF - 40 C + 105 C Bulk
TDK Varistors 150VAC 10% 60mm High E
Datasheet
6In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 60mm MOVs PCB Mount SMD/SMT 150 VAC 200 VDC 240 V 395 V 60 mm 70 kA 570 J 12 nF - 40 C + 105 C Bulk
TDK Varistors 230VAC 10% 80mm High E
Datasheet
3In Stock
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 80mm MOVs PCB Mount SMD/SMT 230 VAC 300 VDC 100 kA 1.2 kJ 16 nF - 40 C + 105 C Bulk
TDK Varistors 320VAC 10% 80mm High E
Datasheet
12In Stock
10Expected 11/25/2026
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 80mm MOVs PCB Mount SMD/SMT 320 VAC 420 VDC 510 V 840 V 80 mm 100 kA 1.6 kJ 11 nF - 40 C + 105 C Bulk
TDK Varistors 550VAC 10% 80mm High E
Datasheet
9In Stock
80On Order
Min.: 1
Mult.: 1

Disc Varistor, High-Energy 80mm MOVs PCB Mount SMD/SMT 550 VAC 745 VDC 910 V 1.5 kV 80 mm 100 kA 3.1 kJ 6.5 nF - 40 C + 105 C Bulk
TDK Varistors 510VAC 10% 14mm 125 DegC AdvanceD
Datasheet
1,236In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 125C, 85C/85%RH 14mm MOVs PCB Mount Radial 510 VAC 670 VDC 820 V 1.355 kV 17.5 mm 5 kA 165 J 240 pF - 40 C + 125 C Bulk
TDK Varistors 14VAC 10% 7mm StandarD
Datasheet
23,545On Order
Min.: 1
Mult.: 1

Disc Varistor, StandarD 7mm MOVs PCB Mount Radial 14 VAC 18 VDC 22 V 43 V 7 mm 250 A 0.9 J 2.3 nF - 40 C + 105 C Bulk
TDK Varistors 60VAC 10% 7mm StandarD
Datasheet
13,764Expected 9/24/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 7mm MOVs PCB Mount Radial 60 VAC 85 VDC 100 V 165 V 7 mm 1.2 kA 4.8 J 480 pF - 40 C + 105 C Bulk

TDK Varistors 40VAC 10% 10mm StandarD
Datasheet
2In Stock
Min.: 1
Mult.: 1
: 3,000

Disc Varistor, StandarD 10mm MOVs PCB Mount Radial 40 VAC 56 VDC 68 V 135 V 10 mm 500 A 6.4 J 2.1 nF - 40 C + 105 C Reel, Cut Tape
TDK Varistors 175VAC 10% 10mm StandarD
Datasheet
23,712On Order
Min.: 1
Mult.: 1

Disc Varistor, StandarD 10mm MOVs PCB Mount Radial 175 VAC 225 VDC 270 V 455 V 10 mm 2.5 kA 28 J 300 pF - 40 C + 105 C Bulk
TDK Varistors 385VAC 10% 14mm MP AdvanceD
Datasheet
12,586On Order
Min.: 1
Mult.: 1

Disc Varistor, Multi_Pulse AdvanceD 14mm MOVs PCB Mount Radial 385 VAC 505 VDC 620 V 1.025 kV 16.5 mm 6 kA 180 J 390 pF - 40 C + 105 C Bulk
TDK Varistors 460VAC 10% 14mm MP AdvanceD
Datasheet
6,000Expected 10/8/2026
Min.: 1
Mult.: 1

Disc Varistor, Multi_Pulse AdvanceD 14mm MOVs PCB Mount Radial 460 VAC 615 VDC 750 V 1.24 kV 16.5 mm 6 kA 200 J 320 pF - 40 C + 105 C Bulk

TDK Varistors 14VAC 10% 14mm AEC-Q200
Datasheet
5,981Expected 9/28/2026
Min.: 1
Mult.: 1

Disc Varistor, Auto-Grade 14mm MOVs PCB Mount Radial 14 VAC 16 VDC 22 V 43 V 16 mm 1 kA 4 J 10 nF - 40 C + 105 C AEC-Q100 Bulk

TDK Varistors 14VAC 10% 14mm AEC-Q200
Datasheet
3,988Expected 9/21/2026
Min.: 1
Mult.: 1
: 4,000

Disc Varistor, Auto-Grade 14mm MOVs PCB Mount Radial 14 VAC 16 VDC 22 V 43 V 17 mm 1 kA 4 J 10 nF - 40 C + 105 C AEC-Q100 Reel, Cut Tape
TDK Varistors 150VAC 10% 14mm AdvanceD
Datasheet
8,980Expected 9/14/2026
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 14mm MOVs PCB Mount Radial 150 VAC 200 VDC 240 V 395 V 15.5 mm 6 kA 60 J 570 pF - 40 C + 105 C Bulk
TDK Varistors 210VAC 10% 14mm AdvanceD
Datasheet
2In Stock
Min.: 1
Mult.: 1

Disc Varistor, AdvanceD 14mm MOVs PCB Mount Radial 210 VAC 270 VDC 330 V 545 V 15.5 mm 6 kA 80 J 410 pF - 40 C + 105 C Bulk
TDK Varistors 130VAC 10% 20mm EnergetiQ
Datasheet
2,603Expected 8/26/2026
Min.: 1
Mult.: 1

Disc Varistor, EnergetiQ 20mm MOVs PCB Mount Radial 130 VAC 170 VDC 205 V 340 V 22.5 mm 15 kA 100 J 1.95 nF - 40 C + 105 C Bulk
TDK Varistors 1000VAC 10% 20mm StandarD
Datasheet
4,493Expected 8/24/2026
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 1.1 kVAC 1.465 kVDC 1.8 kV 2.97 kV 21.5 mm 6.5 kA 410 J 210 pF - 40 C + 105 C Bulk
TDK Varistors 20VAC 10% 20mm StandarD
Datasheet
4,357On Order
Min.: 1
Mult.: 1

Disc Varistor, StandarD 20mm MOVs PCB Mount Radial 20 VAC 26 VDC 33 V 65 V 20 mm 2 kA 18 J 13 nF - 40 C + 105 C Bulk

TDK Varistors 150VAC 10% 20mm SuperioR
Datasheet
1,487Expected 9/14/2026
Min.: 1
Mult.: 1

Disc Varistor, Multi-Pulse SuperioR 20mm MOVs PCB Mount Radial 150 VAC 200 VDC 240 V 395 V 22.5 mm 12 kA 150 J 1.16 nF - 40 C + 105 C Bulk