Thermistors – Mouser United Kingdom

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Automotive Circuit Protection / Thermistors

Murata Electronics Automotive Circuit Protection and Thermistors include a wide lineup of characteristics for various electronic devices, including smartphones and wearable terminals, and automobile/automotive devices. Heat is generated by applied voltage and current, and the resistance changes along with the temperature. Murata thermistors function as a heating element and thermo-sensitive device and play an active role in various applications, such as temperature sensors, circuit protection, and temperature compensation.

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Part #

PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805

PRG21AR420MB1RA
Murata Electronics
1: £0.323
4,130In Stock

Mfr. Part No.
PRG21AR420MB1RA

Mouser Part No
81-PRG21AR420MB1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805

Learn More

Datasheet

4,130In Stock

Cut Tape

£0.323

£0.303

£0.285

£0.273

View

Reel

£0.22

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

42 Ohms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805

PRG21AR420MS1RA
Murata Electronics
1: £0.308
1,584In Stock

Mfr. Part No.
PRG21AR420MS1RA

Mouser Part No
81-PRG21AR420MS1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805

Learn More

Datasheet

1,584In Stock

Cut Tape

£0.308

£0.288

£0.269

£0.255

View

Reel

£0.185

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

42 Ohms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors 0.2 OHM 20% SMD 0805

PRG21BC0R2MM1RA
Murata Electronics
1: £0.458
2,491In Stock
4,000Expected 13/04/2026

Mfr. Part No.
PRG21BC0R2MM1RA

Mouser Part No
81-PRG21BC0R2MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.2 OHM 20% SMD 0805

Learn More

Datasheet

2,491In Stock

4,000Expected 13/04/2026

Cut Tape

£0.458

£0.43

£0.402

£0.383

View

Reel

£0.244

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

200 mOhms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805

PRG21BC0R6MM1RA
Murata Electronics
1: £0.368
475In Stock
4,000Expected 12/03/2026

Mfr. Part No.
PRG21BC0R6MM1RA

Mouser Part No
81-PRG21BC0R6MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805

Learn More

Datasheet

475In Stock

4,000Expected 12/03/2026

Cut Tape

£0.368

£0.344

£0.324

£0.313

View

Reel

£0.252

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

600 mOhms

PCB Mount

SMD/SMT

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0805

PRG21BC2R2MM1RA
Murata Electronics
1: £0.361
3,723In Stock

Mfr. Part No.
PRG21BC2R2MM1RA

Mouser Part No
81-PRG21BC2R2MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0805

Learn More

Datasheet

3,723In Stock

Cut Tape

£0.361

£0.34

£0.317

£0.302

View

Reel

£0.23

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

2.2 Ohms

PCB Mount

SMD/SMT

PTC (Positive Temperature Coefficient) Thermistors 4.7 OHM 20% SMD 0805

PRG21BC4R7MM1RA
Murata Electronics
1: £0.361
3,985In Stock
4,000Expected 18/02/2026

Mfr. Part No.
PRG21BC4R7MM1RA

Mouser Part No
81-PRG21BC4R7MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 4.7 OHM 20% SMD 0805

Learn More

Datasheet

3,985In Stock

4,000Expected 18/02/2026

Cut Tape

£0.361

£0.34

£0.317

£0.301

View

Reel

£0.208

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

4.7 Ohms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF15BA102RB6RC
Murata Electronics
1: £0.135
9,889Expected 10/04/2026

Mfr. Part No.
PRF15BA102RB6RC

Mouser Part No
81-PRF15BA102RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

9,889Expected 10/04/2026

Cut Tape

£0.135

£0.112

£0.099

£0.079

Reel

£0.049

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

PTC Thermistors

1 kOhms

PCB Mount

SMD/SMT

0402 (1005 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG15BC470MM1RC
Murata Electronics
1: £0.12
10,000Expected 09/04/2026
NRND

Mfr. Part No.
PRG15BC470MM1RC

Mouser Part No
81-PRG15BC470MM1RC

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

10,000Expected 09/04/2026

Cut Tape

£0.12

£0.113

£0.099

£0.093

Reel

£0.069

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

PTC Thermistors

47 Ohms

PCB Mount

SMD/SMT

0402 (1005 metric)

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BE471QS5RB
Murata Electronics
1: £0.173
9,638Expected 18/02/2026

Mfr. Part No.
PRF18BE471QS5RB

Mouser Part No
81-PRF18BE471QS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

9,638Expected 18/02/2026

Cut Tape

£0.173

£0.158

£0.139

£0.132

Reel

£0.095

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF18BE471RB5RB
Murata Electronics
1: £0.292
3,986Expected 26/02/2026

Mfr. Part No.
PRF18BE471RB5RB

Mouser Part No
81-PRF18BE471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,986Expected 26/02/2026

Cut Tape

£0.292

£0.275

£0.244

£0.231

Reel

£0.175

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

NTC (Negative Temperature Coefficient) Thermistors

NCU18WB473E6SRB
Murata Electronics
1: £0.135
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
NCU18WB473E6SRB

Mouser Part No
81-NCU18WB473E6SRB

Murata Electronics

NTC (Negative Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

£0.135

£0.112

£0.099

£0.079

Reel

£0.052

View

Min.: 1
Mult.: 1

Reel: 4,000

NTC Thermistors

47 kOhms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF18BE471RS5RB
Murata Electronics
1: £0.39
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF18BE471RS5RB

Mouser Part No
81-PRF18BE471RS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

£0.39

£0.296

£0.255

£0.21

View

Min.: 1
Mult.: 1

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF18BF471QS5RB
Murata Electronics
1: £0.225
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF18BF471QS5RB

Mouser Part No
81-PRF18BF471QS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

£0.225

£0.222

£0.219

£0.214

Reel

£0.093

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF18BG471QS5RB
Murata Electronics
1: £0.248
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF18BG471QS5RB

Mouser Part No
81-PRF18BG471QS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

£0.248

£0.21

£0.185

£0.148

View

Min.: 1
Mult.: 1

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF18BG471RS5RB
Murata Electronics
1: £0.39
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF18BG471RS5RB

Mouser Part No
81-PRF18BG471RS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

£0.39

£0.296

£0.255

£0.21

View

Min.: 1
Mult.: 1

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRF21AS471QB5RA
Murata Electronics
4,000: £0.142
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF21AS471QB5RA

Mouser Part No
81-PRF21AS471QB5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

£0.142

£0.14

£0.138

Min.: 4,000
Mult.: 4,000

Reel: 4,000

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB221MS1RB
Murata Electronics
4,000: £0.172
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRG18BB221MS1RB

Mouser Part No
81-PRG18BB221MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

£0.172

Min.: 4,000
Mult.: 4,000

Reel: 4,000

PTC Thermistors

220 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB470MS1RB
Murata Electronics
4,000: £0.172
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRG18BB470MS1RB

Mouser Part No
81-PRG18BB470MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

£0.172

Min.: 4,000
Mult.: 4,000

PTC Thermistors

47 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MB1RK
Murata Electronics
1: £0.488
Lead-Time 12 Weeks

Mfr. Part No.
PRG21AR220MB1RK

Mouser Part No
81-PRG21AR220MB1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Lead-Time 12 Weeks

Cut Tape

£0.488

£0.37

£0.319

£0.308

View

Reel

£0.175

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

PTC Thermistors

22 Ohms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG15BC220MM1RC
Murata Electronics
1: £0.165
Non-Stocked Lead-Time 12 Weeks
NRND

Mfr. Part No.
PRG15BC220MM1RC

Mouser Part No
81-PRG15BC220MM1RC

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

£0.165

£0.138

£0.121

£0.098

Reel

£0.059

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

PTC Thermistors

22 Ohms

PCB Mount

SMD/SMT

0402 (1005 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG15BC2R2MM1RC
Murata Electronics
1: £0.165
Non-Stocked Lead-Time 12 Weeks
NRND

Mfr. Part No.
PRG15BC2R2MM1RC

Mouser Part No
81-PRG15BC2R2MM1RC

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

£0.165

£0.141

£0.125

£0.10

Reel

£0.061

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

PTC Thermistors

2.2 Ohms

PCB Mount

SMD/SMT

0402 (1005 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG21BC0R6MM1RK
Murata Electronics
3,000: £0.224
Non-Stocked Lead-Time 12 Weeks
NRND

Mfr. Part No.
PRG21BC0R6MM1RK

Mouser Part No
81-PRG21BC0R6MM1RK

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

£0.224

Min.: 3,000
Mult.: 3,000

Reel: 3,000

PTC Thermistors

600 mOhms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors

PRG21BC1R5MM1RK
Murata Electronics
3,000: £0.208
Non-Stocked Lead-Time 12 Weeks
NRND

Mfr. Part No.
PRG21BC1R5MM1RK

Mouser Part No
81-PRG21BC1R5MM1RK

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

£0.208

Min.: 3,000
Mult.: 3,000

Reel: 3,000

PTC Thermistors

1.5 Ohms

PCB Mount

SMD/SMT

0805 (2012 metric)

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18AR471QS5RB
Murata Electronics
1: £0.248
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
PRF18AR471QS5RB

Mouser Part No
81-PRF18AR471QS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

£0.248

£0.21

£0.185

£0.148

View

Min.: 1
Mult.: 1

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BC471RS5RB
Murata Electronics
1: £0.39
Non-Stocked Lead-Time 14 Weeks

Mfr. Part No.
PRF18BC471RS5RB

Mouser Part No
81-PRF18BC471RS5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

£0.39

£0.296

£0.255

£0.21

View

Min.: 1
Mult.: 1

PTC Thermistors

470 Ohms

PCB Mount

SMD/SMT

0603 (1608 metric)

Automotive Circuit Protection / Thermistors

Types of Thermistors

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200 mOhms
400 mOhms
600 mOhms
1 Ohms
1.5 Ohms
2.2 Ohms
3.3 Ohms
4.7 Ohms
6.8 Ohms
10 Ohms
15 Ohms
18 Ohms
22 Ohms
33 Ohms
42 Ohms
47 Ohms
68 Ohms
100 Ohms
220 Ohms
470 Ohms