Circuit Protection – Mouser United Kingdom

.hide-partial { max-height: none; } .show-more { display: none; }

PTC Thermistors

TDK PTC Thermistors are thermally sensitive semiconductor resistors made of ceramic components whose electrical resistance rapidly increases when a certain temperature is exceeded. This feature makes TDK PTC Thermistors ideal for use in electrical and electronic engineering applications, for example as resettable fuses against current overload or as short circuit protection in motors. Applications include measurement and control engineering, entertainment, household, and automotive electronics, and data systems and telecommunications.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 252

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

PTC (Positive Temperature Coefficient) Thermistors 0402 470ohms 125C Temperature Sensor

B59421A0125A062
TDK
1: £0.338
16,160In Stock

Mfr. Part No.
B59421A0125A062

Mouser Part No
871-B59421A0125A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0402 470ohms 125C Temperature Sensor

Learn More

Datasheet

16,160In Stock

Cut Tape

£0.338

£0.315

£0.294

£0.279

View

Reel

£0.207

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC (Positive Temperature Coefficient) Thermistors 440volts 56ohms ICL AEC-Q200

B59451C1130B70
TDK
1: £2.17
1,688In Stock

Mfr. Part No.
B59451C1130B70

Mouser Part No
871-B59451C1130B70

TDK

PTC (Positive Temperature Coefficient) Thermistors 440volts 56ohms ICL AEC-Q200

Learn More

Datasheet

1,688In Stock

£2.17

£2.00

£1.66

£1.53

Reel

£1.42

View

Min.: 1
Mult.: 1

: 500

PTC (Positive Temperature Coefficient) Thermistors 0603 470ohms 95C Temperature Sensor

B59601A0095A062
TDK
1: £0.39
6,174In Stock

Mfr. Part No.
B59601A0095A062

Mouser Part No
871-B59601A0095A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0603 470ohms 95C Temperature Sensor

Learn More

Datasheet

6,174In Stock

Cut Tape

£0.39

£0.367

£0.342

£0.325

View

Reel

£0.226

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0603 60Vdc 20mA PTC Overcurrent

B59622A0090A062
TDK
1: £0.511
3,765In Stock
4,000Expected 06/10/2026

Mfr. Part No.
B59622A0090A062

Mouser Part No
871-B59622A0090A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0603 60Vdc 20mA PTC Overcurrent

Learn More

Datasheet

3,765In Stock

4,000Expected 06/10/2026

Cut Tape

£0.511

£0.469

£0.388

£0.359

£0.338

Reel

£0.338

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0603 63Vdc 25mA PTC Overcurrent

B59623A0090A062
TDK
1: £0.856
5,842In Stock

Mfr. Part No.
B59623A0090A062

Mouser Part No
871-B59623A0090A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0603 63Vdc 25mA PTC Overcurrent

Learn More

Datasheet

5,842In Stock

Cut Tape

£0.856

£0.788

£0.65

£0.61

View

Reel

£0.429

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 100C Temperature Sensor

B59701A0100A062
TDK
1: £0.526
14,090In Stock

Mfr. Part No.
B59701A0100A062

Mouser Part No
871-B59701A0100A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 100C Temperature Sensor

Learn More

Datasheet

14,090In Stock

Cut Tape

£0.526

£0.497

£0.464

£0.443

View

Reel

£0.347

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 70C Temperature Sensor

B59721A0070A062
TDK
1: £0.33
31,076In Stock

Mfr. Part No.
B59721A0070A062

Mouser Part No
871-B59721A0070A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 70C Temperature Sensor

Learn More

Datasheet

31,076In Stock

Cut Tape

£0.33

£0.313

£0.292

£0.277

View

Reel

£0.191

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 80C Temperature Sensor

B59721A0080A062
TDK
1: £0.33
18,707In Stock

Mfr. Part No.
B59721A0080A062

Mouser Part No
871-B59721A0080A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 80C Temperature Sensor

Learn More

Datasheet

18,707In Stock

Cut Tape

£0.33

£0.313

£0.292

£0.277

View

Reel

£0.205

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 90C Temperature Sensor

B59721A0090A062
TDK
1: £0.33
7,711In Stock

Mfr. Part No.
B59721A0090A062

Mouser Part No
871-B59721A0090A062

TDK

PTC (Positive Temperature Coefficient) Thermistors 0805 680ohms 90C Temperature Sensor

Learn More

Datasheet

7,711In Stock

Cut Tape

£0.33

£0.313

£0.292

£0.277

View

Reel

£0.205

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,50oHMS

B59751C0120A070
TDK
1: £2.28
4,705In Stock
5,500Expected 08/10/2026

Mfr. Part No.
B59751C0120A070

Mouser Part No
871-B59751C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 280AC, 400DC,50oHMS

Learn More

Datasheet

4,705In Stock

5,500Expected 08/10/2026

£2.28

£1.91

£1.69

£1.62

Reel

£1.35

View

Min.: 1
Mult.: 1

: 500

PTC (Positive Temperature Coefficient) Thermistors 280AC,400DC,80oHMS PTC Thermistor

B59752C0120A070
TDK
1: £1.82
1,139In Stock

Mfr. Part No.
B59752C0120A070

Mouser Part No
871-B59752C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 280AC,400DC,80oHMS PTC Thermistor

Learn More

Datasheet

1,139In Stock

£1.82

£1.75

£1.64

£1.58

Reel

£1.34

View

Min.: 1
Mult.: 1

: 500

PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,120oHMS PTC Thermistor

B59753C0120A070
TDK
1: £1.71
2,658In Stock
1,500Expected 31/08/2026

Mfr. Part No.
B59753C0120A070

Mouser Part No
871-B59753C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,120oHMS PTC Thermistor

Learn More

Datasheet

2,658In Stock

1,500Expected 31/08/2026

£1.71

£1.59

£1.42

£1.36

View

Min.: 1
Mult.: 1

PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,150oHMS PTC Thermistor

B59754C0120A070
TDK
1: £1.82
1,236In Stock

Mfr. Part No.
B59754C0120A070

Mouser Part No
871-B59754C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,150oHMS PTC Thermistor

Datasheet

1,236In Stock

£1.82

£1.75

£1.64

£1.58

View

Min.: 1
Mult.: 1

PTC (Positive Temperature Coefficient) Thermistors 560vAC,800vDC, 500 Ohms

B59755C0115A070
TDK
1: £2.17
1,134In Stock
2,500Expected 21/09/2026

Mfr. Part No.
B59755C0115A070

Mouser Part No
871-B59755C115A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 560vAC,800vDC, 500 Ohms

Learn More

Datasheet

1,134In Stock

2,500Expected 21/09/2026

£2.17

£2.00

£1.66

£1.53

Reel

£1.41

View

Min.: 1
Mult.: 1

: 500

PTC (Positive Temperature Coefficient) Thermistors 1000AC/DC,7.5KoHMS PTC Thermistor

B59758C0110A070
TDK
1: £2.13
1,586In Stock
4,000Expected 30/09/2026

Mfr. Part No.
B59758C0110A070

Mouser Part No
871-B59758C110A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 1000AC/DC,7.5KoHMS PTC Thermistor

Learn More

Datasheet

1,586In Stock

4,000Expected 30/09/2026

£2.13

£1.93

£1.72

£1.63

Reel

£1.60

View

Min.: 1
Mult.: 1

: 500

PTC (Positive Temperature Coefficient) Thermistors 260AC,370DC,150oHMS PTC Thermistor

B59772C0120A070
TDK
1: £1.31
2,986In Stock

Mfr. Part No.
B59772C0120A070

Mouser Part No
871-B59772C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 260AC,370DC,150oHMS PTC Thermistor

Datasheet

2,986In Stock

£1.31

£1.25

£1.17

£1.13

Reel

£0.934

View

Min.: 1
Mult.: 1

: 1,000

PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,500oHMS PTC Thermistor

B59773C0120A070
TDK
1: £1.86
2,204In Stock
700Expected 31/08/2026

Mfr. Part No.
B59773C0120A070

Mouser Part No
871-B59773C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 440AC,620DC,500oHMS PTC Thermistor

Learn More

Datasheet

2,204In Stock

700Expected 31/08/2026

£1.86

£1.52

£1.23

£1.14

Reel

£0.925

View

Min.: 1
Mult.: 1

: 1,000

PTC (Positive Temperature Coefficient) Thermistors 7.0A 3.7ohms

B59830C0160A070
TDK
1: £1.68
1,490In Stock

Mfr. Part No.
B59830C0160A070

Mouser Part No
871-B59830C160A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 7.0A 3.7ohms

Learn More

Datasheet

1,490In Stock

£1.68

£1.61

£1.51

£1.45

Reel

£1.20

View

Min.: 1
Mult.: 1

: 1,000

PTC (Positive Temperature Coefficient) Thermistors 840A 80A 70 16X2.5 PTC Thermistor

B59840C0080A070
TDK
1: £1.85
1,234In Stock

Mfr. Part No.
B59840C0080A070

Mouser Part No
871-B59840C0080A070

TDK

PTC (Positive Temperature Coefficient) Thermistors 840A 80A 70 16X2.5 PTC Thermistor

Learn More

Datasheet

1,234In Stock

£1.85

£1.70

£1.54

£1.36

Reel

£0.995

View

Min.: 1
Mult.: 1

: 1,000

PTC (Positive Temperature Coefficient) Thermistors 840A 130A 70 12X2.5 PTC Thermistor

B59840C0130A070
TDK
1: £1.27
1,904In Stock

Mfr. Part No.
B59840C0130A070

Mouser Part No
871-B59840C0130A070

TDK

PTC (Positive Temperature Coefficient) Thermistors 840A 130A 70 12X2.5 PTC Thermistor

Learn More

Datasheet

1,904In Stock

£1.27

£1.18

£1.15

£0.986

View

Reel

£0.719

Min.: 1
Mult.: 1

: 700

PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor C 840A 120A 70 16X2,5

B59840C0120A070
TDK
1: £1.85
2,772In Stock
3,000Expected 16/11/2026

Mfr. Part No.
B59840C0120A070

Mouser Part No
871-B59840C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor C 840A 120A 70 16X2,5

Learn More

Datasheet

2,772In Stock

3,000Expected 16/11/2026

£1.85

£1.70

£1.46

£1.35

Reel

£1.05

View

Min.: 1
Mult.: 1

: 1,000

PTC (Positive Temperature Coefficient) Thermistors 4.1A 6.0ohms

B59840C0160A070
TDK
1: £1.48
8,972In Stock

Mfr. Part No.
B59840C0160A070

Mouser Part No
871-B59840C160A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 4.1A 6.0ohms

Learn More

Datasheet

8,972In Stock

£1.48

£1.41

£1.32

£1.26

Reel

£1.06

View

Min.: 1
Mult.: 1

: 1,000

PTC (Positive Temperature Coefficient) Thermistors 7.0A 3.7ohms

B59850C0120A070
TDK
1: £1.47
1,912In Stock

Mfr. Part No.
B59850C0120A070

Mouser Part No
871-B59850C120A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 7.0A 3.7ohms

Learn More

Datasheet

1,912In Stock

£1.47

£1.34

£1.15

£1.11

View

Min.: 1
Mult.: 1

PTC (Positive Temperature Coefficient) Thermistors 1.5A 15ohms

B59860C0160A070
TDK
1: £1.12
2,656In Stock

Mfr. Part No.
B59860C0160A070

Mouser Part No
871-B59860C160A70

TDK

PTC (Positive Temperature Coefficient) Thermistors 1.5A 15ohms

Learn More

Datasheet

2,656In Stock

£1.12

£1.03

£0.986

£0.856

View

Reel

£0.594

Min.: 1
Mult.: 1

: 1,300

PTC (Positive Temperature Coefficient) Thermistors Thru-hole Coated 110V Overcurrent

B59870C0120A070
TDK
1: £1.63
5,779In Stock
7,500Expected 24/11/2026

Mfr. Part No.
B59870C0120A070

Mouser Part No
871-B59870C0120A070

TDK

PTC (Positive Temperature Coefficient) Thermistors Thru-hole Coated 110V Overcurrent

Learn More

Datasheet

5,779In Stock

7,500Expected 24/11/2026

£1.63

£1.28

£1.07

£0.986

View

Reel

£0.717

Min.: 1
Mult.: 1

: 1,500

PTC Thermistors

Types of Circuit Protection

Customer Service Office

Company

Resources

Support