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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: CHF 0.135
23’251In 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

23’251In Stock

Cut Tape

CHF 0.135

CHF 0.122

CHF 0.107

CHF 0.101

Reel

CHF 0.066

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRG18BC4R7MM1RB
Murata Electronics
1: CHF 0.269
11’569In 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

11’569In Stock

Cut Tape

CHF 0.269

CHF 0.249

CHF 0.219

CHF 0.208

Reel

CHF 0.135

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MS5RA
Murata Electronics
1: CHF 0.785
1’054In Stock
4’000Expected 9/30/2026

Mfr. Part No.
PRG21AR220MS5RA

Mouser Part No
81-PRG21AR220MS5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

1’054In Stock

4’000Expected 9/30/2026

Cut Tape

CHF 0.785

CHF 0.597

CHF 0.514

CHF 0.496

View

Reel

CHF 0.275

Min.: 1
Mult.: 1

: 4’000

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

PRF21BA471QB5RA
Murata Electronics
1: CHF 0.278
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

CHF 0.278

CHF 0.261

CHF 0.23

CHF 0.219

Reel

CHF 0.156

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRF21BC471QB5RA
Murata Electronics
1: CHF 0.365
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

CHF 0.365

CHF 0.313

CHF 0.269

CHF 0.221

Reel

CHF 0.148

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRF21BE471QB5RA
Murata Electronics
1: CHF 0.301
6’937In 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

6’937In Stock

Cut Tape

CHF 0.301

CHF 0.282

CHF 0.25

CHF 0.221

Reel

CHF 0.157

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRF18BC471RB5RB
Murata Electronics
1: CHF 0.325
3’705In Stock

Mfr. Part No.
PRF18BC471RB5RB

Mouser Part No
81-PRF18BC471RB5RB

Murata Electronics

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

Learn More

Datasheet

3’705In Stock

Cut Tape

CHF 0.325

CHF 0.302

CHF 0.267

CHF 0.254

Reel

CHF 0.19

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BE471RB5RB
Murata Electronics
1: CHF 0.325
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

CHF 0.325

CHF 0.302

CHF 0.267

CHF 0.254

Reel

CHF 0.183

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRF18BG471RB5RB
Murata Electronics
1: CHF 0.325
4’047In 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

4’047In Stock

CHF 0.325

CHF 0.302

CHF 0.267

CHF 0.254

View

Min.: 1
Mult.: 1

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

PRF03BA102QB7RL
Murata Electronics
1: CHF 0.095
10’500In 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

10’500In Stock

Cut Tape

CHF 0.095

CHF 0.087

CHF 0.077

CHF 0.064

View

Reel

CHF 0.043

Min.: 1
Mult.: 1

: 15’000

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

PRF03BA102QS7RL
Murata Electronics
1: CHF 0.119
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

CHF 0.119

CHF 0.105

CHF 0.092

CHF 0.074

View

Reel

CHF 0.051

Min.: 1
Mult.: 1

: 15’000

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

PRF03BD102QB7RL
Murata Electronics
1: CHF 0.095
10’500In 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

10’500In Stock

Cut Tape

CHF 0.095

CHF 0.087

CHF 0.077

CHF 0.064

View

Reel

CHF 0.043

Min.: 1
Mult.: 1

: 15’000

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

PRF03BD102QS7RL
Murata Electronics
1: CHF 0.119
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

CHF 0.119

CHF 0.105

CHF 0.092

CHF 0.074

View

Reel

CHF 0.051

Min.: 1
Mult.: 1

: 15’000

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

PRF03BB102QB7RL
Murata Electronics
1: CHF 0.088
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

CHF 0.088

CHF 0.078

CHF 0.068

CHF 0.065

View

Reel

CHF 0.042

Min.: 1
Mult.: 1

: 15’000

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

PRF03BC102QB7RL
Murata Electronics
1: CHF 0.088
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

CHF 0.088

CHF 0.078

CHF 0.068

CHF 0.065

View

Reel

CHF 0.042

Min.: 1
Mult.: 1

: 15’000

Aluminium Organic Polymer Capacitors 15UF 25V ESR=40

ECASD31E156M040KA0
Murata Electronics
1: CHF 1.32
3’464In Stock

Mfr. Part No.
ECASD31E156M040KA0

Mouser Part No
81-ECASD31E156M040KA

Murata Electronics

Aluminium Organic Polymer Capacitors 15UF 25V ESR=40

Learn More

Datasheet

3’464In Stock

Cut Tape

CHF 1.32

CHF 0.70

CHF 0.635

CHF 0.536

CHF 0.501

Reel

CHF 0.474

Min.: 1
Mult.: 1

: 3’000

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

PRF18BA471QB5RB
Murata Electronics
1: CHF 0.159
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

CHF 0.159

CHF 0.144

CHF 0.107

CHF 0.092

Reel

CHF 0.071

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRG18BB101MB1RB
Murata Electronics
1: CHF 0.183
32’391In Stock
20’000Expected 8/10/2026

Mfr. Part No.
PRG18BB101MB1RB

Mouser Part No
81-PRG18BB101MB1RB

Murata Electronics

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

Learn More

Datasheet

32’391In Stock

20’000Expected 8/10/2026

Cut Tape

CHF 0.183

CHF 0.166

CHF 0.146

CHF 0.139

Reel

CHF 0.101

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRG18BB330MB1RB
Murata Electronics
1: CHF 0.174
69’605In Stock
100’000Expected 8/4/2026

Mfr. Part No.
PRG18BB330MB1RB

Mouser Part No
81-PRG18BB330MB1RB

Murata Electronics

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

Learn More

Datasheet

69’605In Stock

100’000Expected 8/4/2026

Cut Tape

CHF 0.174

CHF 0.163

CHF 0.144

CHF 0.136

Reel

CHF 0.093

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRG18BB330MS1RB
Murata Electronics
1: CHF 0.341
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

CHF 0.341

CHF 0.316

CHF 0.295

CHF 0.28

View

Reel

CHF 0.203

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRG18BB470MB1RB
Murata Electronics
1: CHF 0.262
88’532In Stock

Mfr. Part No.
PRG18BB470MB1RB

Mouser Part No
81-PRG18BB470MB1RB

Murata Electronics

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

Learn More

Datasheet

88’532In Stock

Cut Tape

CHF 0.262

CHF 0.245

CHF 0.217

CHF 0.195

Reel

CHF 0.146

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

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

PRG18BB471MB1RB
Murata Electronics
1: CHF 0.174
24’501In Stock
28’000Expected 9/22/2026

Mfr. Part No.
PRG18BB471MB1RB

Mouser Part No
81-PRG18BB471MB1RB

Murata Electronics

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

Learn More

Datasheet

24’501In Stock

28’000Expected 9/22/2026

Cut Tape

CHF 0.174

CHF 0.163

CHF 0.144

CHF 0.136

Reel

CHF 0.099

View

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805

PRG21AR220MS1RK
Murata Electronics
1: CHF 0.405
6’994In Stock

Mfr. Part No.
PRG21AR220MS1RK

Mouser Part No
81-PRG21AR220MS1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

6’994In Stock

Cut Tape

CHF 0.405

CHF 0.38

CHF 0.337

CHF 0.325

View

Reel

CHF 0.216

MouseReel Available

Min.: 1
Mult.: 1

: 3’000

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

PRG21BB150MB1RK
Murata Electronics
1: CHF 0.381
10’449In 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

10’449In Stock

Cut Tape

CHF 0.381

CHF 0.355

CHF 0.331

CHF 0.314

View

Reel

CHF 0.221

MouseReel Available

Min.: 1
Mult.: 1

: 3’000

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

PRG21BC0R2MM1RA
Murata Electronics
1: CHF 0.491
8’176In 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

8’176In Stock

Cut Tape

CHF 0.491

CHF 0.464

CHF 0.433

CHF 0.412

View

Reel

CHF 0.304

MouseReel Available

Min.: 1
Mult.: 1

: 4’000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

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