Varistors – Mouser Canada

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MT ThermoFuse™ Varistors

TDK MT ThermoFuse™ Varistors are equipped with monitor outputs and integrated thermal protective components for overvoltage protection. These specially developed quadratic disk varistors are connected in series with a patented thermal protective component design. In the case of a persistent overvoltage and heating of the TDK varistor, the fuse is activated and separates the varistor from the circuit with a high level of reliability. This prevents potential damage to the PCB or the components installed in the varistor’s vicinity.

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Part #

Varistors 420VAC 10% 25mm SuperioR

B72225S4421K101
TDK
1: $5.89
1,032In Stock

Mfr. Part #
B72225S4421K101

Mouser Part #
871-B72225S4421K101

TDK

Varistors 420VAC 10% 25mm SuperioR

Learn More

Datasheet

1,032In Stock

$5.89

$4.12

$3.72

$3.48

View

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

420 VAC

560 VDC

680 V

1.12 kV

27.5 mm

20 kA

700 J

1150 pF

- 40 C

+ 105 C

Bulk

Varistors 320VAC 10% 25mm SuperioR

B72225S4321K101
TDK
1: $6.18
3,196In Stock

Mfr. Part #
B72225S4321K101

Mouser Part #
871-B72225S4321K101

TDK

Varistors 320VAC 10% 25mm SuperioR

Learn More

Datasheet

3,196In Stock

$6.18

$4.80

$4.48

$3.89

View

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

320 VAC

420 VDC

510 V

840 V

27.5 mm

20 kA

445 J

1600 pF

- 40 C

+ 105 C

Bulk

Varistors 510VAC 10% 25mm SuperioR

B72225S4511K101
TDK
1: $6.24
930In Stock

Mfr. Part #
B72225S4511K101

Mouser Part #
871-B72225S4511K101

TDK

Varistors 510VAC 10% 25mm SuperioR

Datasheet

930In Stock

$6.24

$4.75

$4.38

$3.86

View

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

510 VAC

670 VDC

820 V

1.355 kV

27.5 mm

20 kA

750 J

950 pF

- 40 C

+ 105 C

Bulk

Varistors 550VAC 10% 25mm SuperioR

B72225S4551K101
TDK
1: $5.88
862In Stock

Mfr. Part #
B72225S4551K101

Mouser Part #
871-B72225S4551K101

TDK

Varistors 550VAC 10% 25mm SuperioR

Learn More

Datasheet

862In Stock

$5.88

$4.38

$3.93

$3.72

View

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

550 VAC

745 VDC

910 V

1.5 kV

27.5 mm

20 kA

780 J

860 pF

- 40 C

+ 105 C

Bulk

Varistors 230VAC 10% 25mm SuperioR

B72225S4231K101
TDK
1: $5.43
375In Stock

Mfr. Part #
B72225S4231K101

Mouser Part #
871-B72225S4231K101

TDK

Varistors 230VAC 10% 25mm SuperioR

Datasheet

375In Stock

$5.43

$4.10

$3.77

$3.27

View

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

230 VAC

300 VDC

360 V

595 V

27.5 mm

20 kA

315 J

2250 pF

- 40 C

+ 105 C

Bulk

Varistors 300VAC 10% 25mm SuperioR

B72225S4301K101
TDK
1: $5.43
407In Stock

Mfr. Part #
B72225S4301K101

Mouser Part #
871-B72225S4301K101

TDK

Varistors 300VAC 10% 25mm SuperioR

Datasheet

407In Stock

$5.43

$4.10

$3.77

$3.33

View

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

300 VAC

385 VDC

470 V

775 V

27.5 mm

20 kA

410 J

1750 pF

- 40 C

+ 105 C

Bulk

Varistors 130VAC 10% 20mm 3-pin ThermoFuse

B72220W2131K101
TDK
1: $3.15
590In Stock

Mfr. Part #
B72220W2131K101

Mouser Part #
871-B72220W2131K101

TDK

Varistors 130VAC 10% 20mm 3-pin ThermoFuse

Learn More

Datasheet

590In Stock

$3.15

$2.33

$2.13

$1.86

View

Min.: 1
Mult.: 1

Thermo-fused Varistor 3-pin, AdvanceD 20mm

MOVs

PCB Mount

Radial

130 VAC

170 VDC

205 V

340 V

23 mm

10 kA

100 J

1850 pF

- 40 C

+ 85 C

Bulk

Varistors 250VAC 10% 25mm SuperioR

B72225S4251K101
TDK
1: $5.43
724In Stock

Mfr. Part #
B72225S4251K101

Mouser Part #
871-B72225S4251K101

TDK

Varistors 250VAC 10% 25mm SuperioR

Learn More

Datasheet

724In Stock

$5.43

$4.10

$3.77

$3.27

View

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

Varistors 385VAC 10% 25mm SuperioR

B72225S4381K101
TDK
1: $5.43
1,540In Stock

Mfr. Part #
B72225S4381K101

Mouser Part #
871-B72225S4381K101

TDK

Varistors 385VAC 10% 25mm SuperioR

Learn More

Datasheet

1,540In Stock

$5.43

$4.10

$3.77

$3.33

View

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

Varistors 460VAC 10% 25mm SuperioR

B72225S4461K101
TDK
1: $5.89
1,193In Stock

Mfr. Part #
B72225S4461K101

Mouser Part #
871-B72225S4461K101

TDK

Varistors 460VAC 10% 25mm SuperioR

Datasheet

1,193In Stock

$5.89

$4.12

$3.72

$3.57

$3.23

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

460 VAC

615 VDC

750 V

1.24 kV

27.5 mm

20 kA

720 J

1050 pF

- 40 C

+ 105 C

Bulk

Varistors 580VAC 10% 25mm SuperioR

B72225S4581K101
TDK
1: $6.24
1,712In Stock
1,200Expected 2026-07-03

Mfr. Part #
B72225S4581K101

Mouser Part #
871-B72225S4581K101

TDK

Varistors 580VAC 10% 25mm SuperioR

Learn More

Datasheet

1,712In Stock

1,200Expected 2026-07-03

$6.24

$4.38

$3.95

$3.82

$3.43

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

Varistors Leaded Disk Varistor 710pF, 680VAC, 895VDC

B72225S4681K101
TDK
1: $6.06
1,051In Stock

Mfr. Part #
B72225S4681K101

Mouser Part #
871-B72225S4681K101

TDK

Varistors Leaded Disk Varistor 710pF, 680VAC, 895VDC

Datasheet

1,051In Stock

$6.06

$4.38

$3.95

$3.82

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

680 VAC

895 VDC

1.1 kV

1.815 kV

27.5 mm

20 kA

940 J

710 pF

- 40 C

+ 105 C

Bulk

Varistors 275VAC 10% 25mm SuperioR

B72225S4271K101
TDK
1: $5.43
403In Stock

Mfr. Part #
B72225S4271K101

Mouser Part #
871-B72225S4271K101

TDK

Varistors 275VAC 10% 25mm SuperioR

Learn More

Datasheet

403In Stock

$5.43

$4.10

$3.77

$3.27

$3.25

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

275 VAC

350 VDC

430 V

710 V

25 mm

20 kA

375 J

1320 pF

- 40 C

+ 105 C

Bulk

Varistors 440VAC 10% 25mm SuperioR

B72225S4441K101
TDK
1: $5.89
185In Stock

Mfr. Part #
B72225S4441K101

Mouser Part #
871-B72225S4441K101

TDK

Varistors 440VAC 10% 25mm SuperioR

Datasheet

185In Stock

$5.89

$4.12

$3.72

$3.57

$3.23

Min.: 1
Mult.: 1

Disc Varistor, SuperioR 25mm

MOVs

PCB Mount

Radial

440 VAC

585 VDC

715 V

1.18 kV

27.5 mm

20 kA

710 J

1100 pF

- 40 C

+ 105 C

Bulk

Varistors 275VAC 10% 20mm 3-pin ThermoFuse

B72220W2271K101
TDK
1: $2.71
632Expected 2026-07-30

Mfr. Part #
B72220W2271K101

Mouser Part #
871-B72220W2271K101

TDK

Varistors 275VAC 10% 20mm 3-pin ThermoFuse

Learn More

Datasheet

632Expected 2026-07-30

$2.71

$2.00

$1.83

$1.58

View

Min.: 1
Mult.: 1

Thermo-fused Varistor 3-pin, AdvanceD 20mm

MOVs

PCB Mount

Radial

275 VAC

350 VDC

430 V

710 V

9.5 mm

10 kA

215 J

850 pF

- 40 C

+ 85 C

Bulk

Varistors 20mm,130Vac ,thermo-fused type,3pin

B72220W2131K501
TDK
750: $2.32
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2131K501

Mouser Part #
871-B72220W2131K501

TDK

Varistors 20mm,130Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$2.32

$2.19

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,140Vac ,thermo-fused type,3pin

B72220W2141K501
TDK
750: $2.32
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2141K501

Mouser Part #
871-B72220W2141K501

TDK

Varistors 20mm,140Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$2.32

$2.19

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,150Vac ,thermo-fused type,3pin

B72220W2151K501
TDK
750: $2.32
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2151K501

Mouser Part #
871-B72220W2151K501

TDK

Varistors 20mm,150Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$2.32

$2.19

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,175Vac ,thermo-fused type,3pin

B72220W2171K501
TDK
750: $1.97
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2171K501

Mouser Part #
871-B72220W2171K501

TDK

Varistors 20mm,175Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.97

$1.87

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,210Vac ,thermo-fused type,3pin

B72220W2211K501
TDK
750: $1.97
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2211K501

Mouser Part #
871-B72220W2211K501

TDK

Varistors 20mm,210Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.97

$1.87

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,250Vac ,thermo-fused type,3pin

B72220W2251K501
TDK
750: $1.97
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2251K501

Mouser Part #
871-B72220W2251K501

TDK

Varistors 20mm,250Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.97

$1.87

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,275Vac ,thermo-fused type,3pin

B72220W2271K501
TDK
750: $2.42
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2271K501

Mouser Part #
871-B72220W2271K501

TDK

Varistors 20mm,275Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$2.42

$2.00

$1.97

$1.86

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 20mm,300Vac ,thermo-fused type,3pin

B72220W2301K501
TDK
750: $1.97
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2301K501

Mouser Part #
871-B72220W2301K501

TDK

Varistors 20mm,300Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.97

$1.87

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

Varistors 320VAC 10% 20mm 3-pin ThermoFuse

B72220W2321K101
TDK
750: $1.50
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2321K101

Mouser Part #
871-B72220W2321K101

TDK

Varistors 320VAC 10% 20mm 3-pin ThermoFuse

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.50

$1.35

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

MOVs

PCB Mount

Radial

320 VAC

420 VDC

510 V

840 V

23 mm

10 kA

273 J

720 pF

- 40 C

+ 85 C

Bulk

Varistors 20mm,320Vac ,thermo-fused type,3pin

B72220W2321K501
TDK
750: $1.97
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220W2321K501

Mouser Part #
871-B72220W2321K501

TDK

Varistors 20mm,320Vac ,thermo-fused type,3pin

Datasheet

Non-Stocked Lead-Time 10 Weeks

$1.97

$1.87

Min.: 750
Mult.: 750

Thermo-fused Varistor 3-pin, AdvanceD 20mm

Bulk

MT ThermoFuse™ Varistors

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