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ThermoFuse™ Varistors

TDK ThermoFuse™ Varistors feature a wide operating voltage range of 130V_RMS to 750V_RMS. These varistors are self-protected under abnormal overvoltage conditions and offer high-energy Advanced series E2. TDK ThermoFuse varistors include either leaded square varistor elements or leaded round varistor elements. These varistors are made of epoxy molding and are flame-retardant as per UL 94 V-0. The ThermoFuse varistors come with tinned copper wire and metal compound wire terminals. Typical applications include power meters, telecom, transient voltage surger suppressors (TVSS), and household appliances.

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Part #

Varistors 385VAC 10% 20mm AdvanceD Thermofused

B72220T2381K105
TDK
1: ₱130.06
500In Stock

Mfr. Part #
B72220T2381K105

Mouser Part #
871-B72220T2381K105

TDK

Varistors 385VAC 10% 20mm AdvanceD Thermofused

Datasheet

500In Stock

₱130.06

₱96.93

₱88.34

₱79.14

View

Min.: 1
Mult.: 1

Industrial Surge Protectors 510V 25kA 10% 4pin 30mm

B72230M0511M401
TDK
1: ₱841.11
58In Stock

Mfr. Part #
B72230M0511M401

Mouser Part #
871-B72230M0511M401

TDK

Industrial Surge Protectors 510V 25kA 10% 4pin 30mm

Datasheet

58In Stock

₱841.11

₱658.29

₱585.89

₱513.50

View

Min.: 1
Mult.: 1

Varistors 130VAC 10% 20mm 3-pin ThermoFuse

B72220W2131K101
TDK
1: ₱134.36
590In Stock

Mfr. Part #
B72220W2131K101

Mouser Part #
871-B72220W2131K101

TDK

Varistors 130VAC 10% 20mm 3-pin ThermoFuse

Datasheet

590In Stock

₱134.36

₱99.39

₱90.80

₱79.14

View

Min.: 1
Mult.: 1

Industrial Surge Protectors 550V 25kA 10% 4pin 30mm

B72230M0551M401
TDK
1: ₱784.67
349In Stock

Mfr. Part #
B72230M0551M401

Mouser Part #
871-B72230M0551M401

TDK

Industrial Surge Protectors 550V 25kA 10% 4pin 30mm

Datasheet

349In Stock

₱784.67

₱604.30

₱552.15

₱541.11

View

Min.: 1
Mult.: 1

Varistors 510VAC 10% 20mm AdvanceD Thermofused

B72220T2511K105
TDK
1: ₱241.72
1,534In Stock

Mfr. Part #
B72220T2511K105

Mouser Part #
871-B72220T2511K105

TDK

Varistors 510VAC 10% 20mm AdvanceD Thermofused

Datasheet

1,534In Stock

₱241.72

₱152.76

₱139.88

₱119.02

View

Min.: 1
Mult.: 1

Varistors 320VAC 10% 20mm AdvanceD Thermofused

B72220T2321K105
TDK
1: ₱145.40
1,652In Stock

Mfr. Part #
B72220T2321K105

Mouser Part #
871-B72220T2321K105

TDK

Varistors 320VAC 10% 20mm AdvanceD Thermofused

Datasheet

1,652In Stock

₱145.40

₱107.98

₱98.16

₱88.34

View

Min.: 1
Mult.: 1

Varistors 150V 14mm 2pin ThermoFuse Varistor

B72214R2151K101
TDK
1: ₱104.30
438In Stock

Mfr. Part #
B72214R2151K101

Mouser Part #
871-B72214R2151K101

TDK

Varistors 150V 14mm 2pin ThermoFuse Varistor

Datasheet

438In Stock

₱104.30

₱76.69

₱69.94

₱59.33

View

Min.: 1
Mult.: 1

Varistors 275V 14mm 2pin ThermoFuse Varistor

B72214R2271K101
TDK
1: ₱90.18
532In Stock

Mfr. Part #
B72214R2271K101

Mouser Part #
871-B72214R2271K101

TDK

Varistors 275V 14mm 2pin ThermoFuse Varistor

Datasheet

532In Stock

₱90.18

₱66.26

₱59.69

₱50.55

View

Min.: 1
Mult.: 1

Varistors 300V 14mm 2pin ThermoFuse Varistor

B72214R2301K101
TDK
1: ₱90.18
883In Stock

Mfr. Part #
B72214R2301K101

Mouser Part #
871-B72214R2301K101

TDK

Varistors 300V 14mm 2pin ThermoFuse Varistor

Datasheet

883In Stock

₱90.18

₱66.26

₱59.69

₱50.55

View

Min.: 1
Mult.: 1

Varistors 175VAC 10% 14mm AdvanceD Thermofused

B72214T2171K105
TDK
1: ₱100.61
385In Stock

Mfr. Part #
B72214T2171K105

Mouser Part #
871-B72214T2171K105

TDK

Varistors 175VAC 10% 14mm AdvanceD Thermofused

Datasheet

385In Stock

₱100.61

₱74.23

₱67.49

₱59.88

View

Min.: 1
Mult.: 1

Varistors 300VAC 10% 20mm 2-pin ThermoFuse

B72220R2301K101
TDK
1: ₱110.43
941In Stock

Mfr. Part #
B72220R2301K101

Mouser Part #
871-B72220R2301K101

TDK

Varistors 300VAC 10% 20mm 2-pin ThermoFuse

Datasheet

941In Stock

₱110.43

₱81.60

₱74.23

₱73.62

View

Min.: 1
Mult.: 1

Varistors 320VAC 10% 20mm 2-pin ThermoFuse

B72220R2321K101
TDK
1: ₱116.57
694In Stock

Mfr. Part #
B72220R2321K101

Mouser Part #
871-B72220R2321K101

TDK

Varistors 320VAC 10% 20mm 2-pin ThermoFuse

Datasheet

694In Stock

₱116.57

₱85.89

₱78.53

₱68.10

View

Min.: 1
Mult.: 1

Varistors 275VAC 10% 20mm 3-pin ThermoFuse

B72220W2271K101
TDK
1: ₱115.34
622In Stock

Mfr. Part #
B72220W2271K101

Mouser Part #
871-B72220W2271K101

TDK

Varistors 275VAC 10% 20mm 3-pin ThermoFuse

Datasheet

622In Stock

₱115.34

₱85.28

₱77.91

₱77.30

View

Min.: 1
Mult.: 1

Varistors 275VAC 10% 20mm 2-pin ThermoFuse

B72220R2271K101
TDK
1: ₱123.31
740Expected 08/10/2026

Mfr. Part #
B72220R2271K101

Mouser Part #
871-B72220R2271K101

TDK

Varistors 275VAC 10% 20mm 2-pin ThermoFuse

Datasheet

740Expected 08/10/2026

₱123.31

₱91.41

₱82.82

₱71.78

View

Min.: 1
Mult.: 1

Varistors 320V 14mm 2pin ThermoFuse Varistor

B72214R2321K101
TDK
1: ₱106.14
Lead-Time 10 Weeks

Mfr. Part #
B72214R2321K101

Mouser Part #
871-B72214R2321K101

TDK

Varistors 320V 14mm 2pin ThermoFuse Varistor

Datasheet

Lead-Time 10 Weeks

₱106.14

₱77.91

₱71.17

₱59.82

View

Min.: 1
Mult.: 1

Varistors 150VAC 10% 14mm AdvanceD Thermofused

B72214T2151K105
TDK
1,960: ₱67.49
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214T2151K105

Mouser Part #
871-B72214T2151K105

TDK

Varistors 150VAC 10% 14mm AdvanceD Thermofused

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱67.49

₱66.87

Min.: 1,960
Mult.: 1,960

Varistors 175VAC 10% 14mm AdvanceD Thermofused

B72214T2171K106
TDK
1,960: ₱54.66
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214T2171K106

Mouser Part #
871-B72214T2171K106

TDK

Varistors 175VAC 10% 14mm AdvanceD Thermofused

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱54.66

Min.: 1,960
Mult.: 1,960

Varistors 300VAC 10% 14mm AdvanceD Thermofused

B72214T2301K106
TDK
1: ₱172.39
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214T2301K106

Mouser Part #
871-B72214T2301K106

TDK

Varistors 300VAC 10% 14mm AdvanceD Thermofused

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱172.39

₱108.59

₱96.32

₱82.21

View

Min.: 1
Mult.: 1

Varistors 300VAC 10% 14mm AdvanceD Thermofused

B72214T2301K108
TDK
1,680: ₱54.66
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214T2301K108

Mouser Part #
871-B72214T2301K108

TDK

Varistors 300VAC 10% 14mm AdvanceD Thermofused

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱54.66

Min.: 1,680
Mult.: 1,680

Varistors 320VAC 10% 14mm AdvanceD Thermofused

B72214T2321K106
TDK
1,960: ₱41.72
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214T2321K106

Mouser Part #
871-B72214T2321K106

TDK

Varistors 320VAC 10% 14mm AdvanceD Thermofused

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱41.72

Min.: 1,960
Mult.: 1,960

Varistors 320VAC 10% 14mm 3-pin ThermoFuse

B72214W2321K101
TDK
1: ₱111.66
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214W2321K101

Mouser Part #
871-B72214W2321K101

TDK

Varistors 320VAC 10% 14mm 3-pin ThermoFuse

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱111.66

₱81.60

₱74.23

₱66.26

View

Min.: 1
Mult.: 1

Varistors 380VAC 10% 14mm 3-pin ThermoFuse

B72214W2381K101
TDK
1: ₱104.91
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72214W2381K101

Mouser Part #
871-B72214W2381K101

TDK

Varistors 380VAC 10% 14mm 3-pin ThermoFuse

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱104.91

₱77.30

₱69.94

₱62.58

View

Min.: 1
Mult.: 1

Varistors 130VAC 10% 20mm 2-pin ThermoFuse

B72220R2131K101
TDK
750: ₱74.85
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220R2131K101

Mouser Part #
871-B72220R2131K101

TDK

Varistors 130VAC 10% 20mm 2-pin ThermoFuse

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱74.85

₱73.01

₱71.78

Min.: 750
Mult.: 750

Varistors 150VAC 10% 20mm 2-pin ThermoFuse

B72220R2151K101
TDK
750: ₱73.01
Non-Stocked Lead-Time 10 Weeks

Mfr. Part #
B72220R2151K101

Mouser Part #
871-B72220R2151K101

TDK

Varistors 150VAC 10% 20mm 2-pin ThermoFuse

Datasheet

Non-Stocked Lead-Time 10 Weeks

₱73.01

₱71.78

₱68.10

Min.: 750
Mult.: 750

Varistors 250VAC 10% 20mm 2-pin ThermoFuse

B72220R2251K101
TDK
1: ₱130.68
Lead-Time 10 Weeks

Mfr. Part #
B72220R2251K101

Mouser Part #
871-B72220R2251K101

TDK

Varistors 250VAC 10% 20mm 2-pin ThermoFuse

Datasheet

Lead-Time 10 Weeks

₱130.68

₱96.93

₱87.73

₱78.53

View

Min.: 1
Mult.: 1