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POSISTOR® PTC Thermistors

Murata POSISTOR^® Positive Temperature Coefficient (PTC) Thermistors are ideal for circuit protection in a variety of applications, such as temperature sensor and temperature compensation. These devices are also suitable for current control in common household appliances, humidifiers, dryers of all kinds, refrigerators, freezers, and air conditioners. In a conventional NTC thermistor, the resistance decreases when the temperature increases, but for the Murata PTC thermistors, the resistance rises sharply when their temperature exceeds a specific temperature.

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Part #

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

PRF18BE471QB5RB
Murata Electronics
1: $0.247
21,250In Stock

Mfr. Part No.
PRF18BE471QB5RB

Mouser Part No
81-PRF18BE471QB5RB

Murata Electronics

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

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Datasheet

21,250In Stock

Cut Tape

$0.247

$0.223

$0.196

$0.186

Reel

$0.122

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BC4R7MM1RB
Murata Electronics
1: $0.566
11,439In Stock
NRND

Mfr. Part No.
PRG18BC4R7MM1RB

Mouser Part No
81-PRG18BC4R7MM1RB

NRND

Murata Electronics

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

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Datasheet

11,439In Stock

Cut Tape

$0.566

$0.519

$0.432

$0.358

Reel

$0.239

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BE471RB5RB
Murata Electronics
1: $0.595
3,860In Stock

Mfr. Part No.
PRF18BE471RB5RB

Mouser Part No
81-PRF18BE471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,860In Stock

Cut Tape

$0.595

$0.552

$0.489

$0.465

Reel

$0.336

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF18BG471RB5RB
Murata Electronics
1: $0.595
4,032In Stock

Mfr. Part No.
PRF18BG471RB5RB

Mouser Part No
81-PRF18BG471RB5RB

Murata Electronics

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

Learn More

Datasheet

4,032In Stock

$0.595

$0.552

$0.489

$0.463

View

Min.: 1
Mult.: 1

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805

PRF21BA471QB5RA
Murata Electronics
1: $0.508
6,271In Stock

Mfr. Part No.
PRF21BA471QB5RA

Mouser Part No
81-PRF21BA471QB5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

6,271In Stock

Cut Tape

$0.508

$0.477

$0.421

$0.40

Reel

$0.28

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805

PRF21BC471QB5RA
Murata Electronics
1: $0.667
7,670In Stock

Mfr. Part No.
PRF21BC471QB5RA

Mouser Part No
81-PRF21BC471QB5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

7,670In Stock

Cut Tape

$0.667

$0.571

$0.493

$0.405

View

Reel

$0.262

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805

PRF21BE471QB5RA
Murata Electronics
1: $0.551
6,837In Stock

Mfr. Part No.
PRF21BE471QB5RA

Mouser Part No
81-PRF21BE471QB5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

6,837In Stock

Cut Tape

$0.551

$0.516

$0.457

$0.405

Reel

$0.267

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

PRF03BA102QB7RL
Murata Electronics
1: $0.174
12,000In Stock
New Product

Mfr. Part No.
PRF03BA102QB7RL

Mouser Part No
81-PRF03BA102QB7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

Learn More

Datasheet

12,000In Stock

Cut Tape

$0.174

$0.158

$0.139

$0.116

View

Reel

$0.08

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

PRF03BA102QS7RL
Murata Electronics
1: $0.218
9,100In Stock
New Product

Mfr. Part No.
PRF03BA102QS7RL

Mouser Part No
81-PRF03BA102QS7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

Learn More

Datasheet

9,100In Stock

Cut Tape

$0.218

$0.191

$0.168

$0.135

View

Reel

$0.093

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

PRF03BD102QB7RL
Murata Electronics
1: $0.174
12,000In Stock
New Product

Mfr. Part No.
PRF03BD102QB7RL

Mouser Part No
81-PRF03BD102QB7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

Learn More

Datasheet

12,000In Stock

Cut Tape

$0.174

$0.158

$0.139

$0.116

View

Reel

$0.08

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

PRF03BD102QS7RL
Murata Electronics
1: $0.218
10,472In Stock
New Product

Mfr. Part No.
PRF03BD102QS7RL

Mouser Part No
81-PRF03BD102QS7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

Learn More

Datasheet

10,472In Stock

Cut Tape

$0.218

$0.191

$0.168

$0.135

View

Reel

$0.093

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC

PRF03BB102QB7RL
Murata Electronics
1: $0.16
13,599In Stock
New Product

Mfr. Part No.
PRF03BB102QB7RL

Mouser Part No
81-PRF03BB102QB7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC

Learn More

Datasheet

13,599In Stock

Cut Tape

$0.16

$0.144

$0.125

$0.119

View

Reel

$0.077

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC

PRF03BC102QB7RL
Murata Electronics
1: $0.16
14,465In Stock
New Product

Mfr. Part No.
PRF03BC102QB7RL

Mouser Part No
81-PRF03BC102QB7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC

Learn More

Datasheet

14,465In Stock

Cut Tape

$0.16

$0.144

$0.125

$0.119

View

Reel

$0.077

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603

PRG18BB330MB1RB
Murata Electronics
1: $0.363
161,704In Stock

Mfr. Part No.
PRG18BB330MB1RB

Mouser Part No
81-PRG18BB330MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603

Learn More

Datasheet

161,704In Stock

Cut Tape

$0.363

$0.334

$0.277

$0.231

Reel

$0.161

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminium Organic Polymer Capacitors 15UF 25V ESR=40

ECASD31E156M040KA0
Murata Electronics
1: $2.41
3,439In Stock
3,000Expected 21/12/2026

Mfr. Part No.
ECASD31E156M040KA0

Mouser Part No
81-ECASD31E156M040KA

Murata Electronics

Aluminium Organic Polymer Capacitors 15UF 25V ESR=40

Learn More

Datasheet

3,439In Stock

3,000Expected 21/12/2026

Cut Tape

$2.41

$1.28

$1.16

$0.98

$0.915

Reel

$0.867

Min.: 1
Mult.: 1

: 3,000

PTC (Positive Temperature Coefficient) Thermistors

PRF15BB102RB6RC
Murata Electronics
1: $0.203
64,080In Stock

Mfr. Part No.
PRF15BB102RB6RC

Mouser Part No
81-PRF15BB102RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

64,080In Stock

Cut Tape

$0.203

$0.186

$0.162

$0.152

Reel

$0.104

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

PRF18BA471QB5RB
Murata Electronics
1: $0.29
64,034In Stock

Mfr. Part No.
PRF18BA471QB5RB

Mouser Part No
81-PRF18BA471QB5RB

Murata Electronics

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

Learn More

Datasheet

64,034In Stock

Cut Tape

$0.29

$0.262

$0.229

$0.20

Reel

$0.164

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603

PRG18BB101MB1RB
Murata Electronics
1: $0.377
29,031In Stock
20,000Expected 25/08/2026

Mfr. Part No.
PRG18BB101MB1RB

Mouser Part No
81-PRG18BB101MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603

Learn More

Datasheet

29,031In Stock

20,000Expected 25/08/2026

Cut Tape

$0.377

$0.339

$0.281

$0.235

Reel

$0.152

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603

PRG18BB330MS1RB
Murata Electronics
1: $0.624
9,425In Stock

Mfr. Part No.
PRG18BB330MS1RB

Mouser Part No
81-PRG18BB330MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603

Learn More

Datasheet

9,425In Stock

Cut Tape

$0.624

$0.579

$0.539

$0.512

View

Reel

$0.371

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD

PRG18BB470MB1RB
Murata Electronics
1: $0.566
87,102In Stock

Mfr. Part No.
PRG18BB470MB1RB

Mouser Part No
81-PRG18BB470MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD

Learn More

Datasheet

87,102In Stock

Cut Tape

$0.566

$0.493

$0.416

$0.348

Reel

$0.228

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603

PRG18BB471MB1RB
Murata Electronics
1: $0.363
22,163In Stock
28,000Expected 22/09/2026

Mfr. Part No.
PRG18BB471MB1RB

Mouser Part No
81-PRG18BB471MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603

Learn More

Datasheet

22,163In Stock

28,000Expected 22/09/2026

Cut Tape

$0.363

$0.334

$0.277

$0.231

Reel

$0.149

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805

PRG21BB150MB1RK
Murata Electronics
1: $0.827
10,374In Stock

Mfr. Part No.
PRG21BB150MB1RK

Mouser Part No
81-PRG21BB150MB1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805

Learn More

Datasheet

10,374In Stock

Cut Tape

$0.827

$0.754

$0.626

$0.606

View

Reel

$0.377

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRG21BC0R2MM1RA
Murata Electronics
1: $1.09
8,126In Stock

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

8,126In Stock

Cut Tape

$1.09

$0.995

$0.827

$0.792

View

Reel

$0.481

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0603

PRG18BC2R2MM1RB
Murata Electronics
1: $0.493
Non-Stocked Lead-Time 10 Weeks
NRND

Mfr. Part No.
PRG18BC2R2MM1RB

Mouser Part No
81-PRG18BC2R2MM1RB

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0603

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

Cut Tape

$0.493

$0.454

$0.402

$0.381

Reel

$0.278

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0805

PRG21BC6R8MM1RA
Murata Electronics
1: $0.725
18,755In Stock
16,000Expected 23/11/2026

Mfr. Part No.
PRG21BC6R8MM1RA

Mouser Part No
81-PRG21BC6R8MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0805

Learn More

Datasheet

18,755In Stock

16,000Expected 23/11/2026

Cut Tape

$0.725

$0.68

$0.634

$0.603

View

Reel

$0.406

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

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