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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

PRG21BC3R3MM1RA
Murata Electronics
1: Rp9.356
2.808In Stock

Mfr. Part No.
PRG21BC3R3MM1RA

Mouser Part No
81-PRG21BC3R3MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

2.808In Stock

Cut Tape

Rp9.356

Rp8.769

Rp8.182

Rp7.797

View

Reel

Rp5.944

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

PTC (Positive Temperature Coefficient) Thermistors 1 OHM 20% SMD 0603

PRG18BC1R0MM1RB
Murata Electronics
1: Rp6.054
356In Stock
4.000Expected 18/02/2026
NRND

Mfr. Part No.
PRG18BC1R0MM1RB

Mouser Part No
81-PRG18BC1R0MM1RB

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 1 OHM 20% SMD 0603

Learn More

Datasheet

356In Stock

4.000Expected 18/02/2026

Cut Tape

Rp6.054

Rp5.577

Rp4.917

Rp4.678

Reel

Rp3.614

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0603

PRG18BC6R8MM1RB
Murata Electronics
1: Rp4.770
3.934In Stock
8.000Expected 29/04/2026
NRND

Mfr. Part No.
PRG18BC6R8MM1RB

Mouser Part No
81-PRG18BC6R8MM1RB

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0603

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Datasheet

3.934In Stock

8.000Expected 29/04/2026

Cut Tape

Rp4.770

Rp4.623

Rp4.146

Rp3.981

Reel

Rp3.119

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

PTC (Positive Temperature Coefficient) Thermistors PTC 0402, 10kOhms, 50%, 32VDC

PRF15BB103RB6RC
Murata Electronics
1: Rp3.669
12.597In Stock

Mfr. Part No.
PRF15BB103RB6RC

Mouser Part No
81-PRF15BB103RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors PTC 0402, 10kOhms, 50%, 32VDC

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Datasheet

12.597In Stock

Cut Tape

Rp3.669

Rp2.770

Rp2.257

Rp1.908

Reel

Rp1.174

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10.000

PTC (Positive Temperature Coefficient) Thermistors

PRF15BC102RB6RC
Murata Electronics
1: Rp3.302
7.781In Stock

Mfr. Part No.
PRF15BC102RB6RC

Mouser Part No
81-PRF15BC102RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

7.781In Stock

Cut Tape

Rp3.302

Rp2.935

Rp2.587

Rp2.330

Reel

Rp1.449

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10.000

PTC (Positive Temperature Coefficient) Thermistors 1 OHM 50% SMD 0402

PRF15BD102RB6RC
Murata Electronics
1: Rp2.385
8.335In Stock

Mfr. Part No.
PRF15BD102RB6RC

Mouser Part No
81-PRF15BD102RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 1 OHM 50% SMD 0402

Learn More

Datasheet

8.335In Stock

Cut Tape

Rp2.385

Rp2.257

Rp1.963

Rp1.871

Reel

Rp1.376

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10.000

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

PRF18AR471QB5RB
Murata Electronics
1: Rp3.119
5.170In Stock

Mfr. Part No.
PRF18AR471QB5RB

Mouser Part No
81-PRF18AR471QB5RB

Murata Electronics

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

Learn More

Datasheet

5.170In Stock

Cut Tape

Rp3.119

Rp2.752

Rp2.440

Rp2.312

Reel

Rp2.018

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF18BD471QB5RB
Murata Electronics
1: Rp3.486
9.713In Stock

Mfr. Part No.
PRF18BD471QB5RB

Mouser Part No
81-PRF18BD471QB5RB

Murata Electronics

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

Learn More

Datasheet

9.713In Stock

Cut Tape

Rp3.486

Rp3.192

Rp2.807

Rp2.660

Reel

Rp2.036

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF18BE471QB5RB
Murata Electronics
1: Rp2.935
16.056In Stock
8.000Expected 14/04/2026

Mfr. Part No.
PRF18BE471QB5RB

Mouser Part No
81-PRF18BE471QB5RB

Murata Electronics

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

Learn More

Datasheet

16.056In Stock

8.000Expected 14/04/2026

Cut Tape

Rp2.935

Rp2.715

Rp2.385

Rp2.257

Reel

Rp1.559

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF18BF471QB5RB
Murata Electronics
1: Rp2.935
7.685In Stock
8.000Expected 14/04/2026

Mfr. Part No.
PRF18BF471QB5RB

Mouser Part No
81-PRF18BF471QB5RB

Murata Electronics

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

Learn More

Datasheet

7.685In Stock

8.000Expected 14/04/2026

Cut Tape

Rp2.935

Rp2.715

Rp2.385

Rp2.257

Reel

Rp1.706

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF18BG471QB5RB
Murata Electronics
1: Rp2.935
2.300In Stock
12.000Expected 16/04/2026

Mfr. Part No.
PRF18BG471QB5RB

Mouser Part No
81-PRF18BG471QB5RB

Murata Electronics

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

Learn More

Datasheet

2.300In Stock

12.000Expected 16/04/2026

Cut Tape

Rp2.935

Rp2.715

Rp2.385

Rp2.257

Reel

Rp1.780

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF18BG471RB5RB
Murata Electronics
1: Rp7.155
4.077In 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

4.077In Stock

Rp7.155

Rp6.715

Rp5.944

Rp5.651

View

Min.: 1
Mult.: 1

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

PRF21BA471QB5RA
Murata Electronics
1: Rp6.421
2.421In Stock
4.000Expected 06/03/2026

Mfr. Part No.
PRF21BA471QB5RA

Mouser Part No
81-PRF21BA471QB5RA

Murata Electronics

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

Learn More

Datasheet

2.421In Stock

4.000Expected 06/03/2026

Cut Tape

Rp6.421

Rp5.907

Rp5.229

Rp4.972

Reel

Rp3.853

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF21BB471QB5RA
Murata Electronics
1: Rp5.320
1.880In Stock

Mfr. Part No.
PRF21BB471QB5RA

Mouser Part No
81-PRF21BB471QB5RA

Murata Electronics

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

Learn More

Datasheet

1.880In Stock

Cut Tape

Rp5.320

Rp4.770

Rp4.513

Rp4.403

Reel

Rp3.027

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF21BC471QB5RA
Murata Electronics
1: Rp8.072
3.850In 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

3.850In Stock

Cut Tape

Rp8.072

Rp7.614

Rp6.751

Rp6.384

Reel

Rp3.467

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRF21BE471QB5RA
Murata Electronics
1: Rp6.788
3.392In Stock
4.000Expected 14/04/2026

Mfr. Part No.
PRF21BE471QB5RA

Mouser Part No
81-PRF21BE471QB5RA

Murata Electronics

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

Learn More

Datasheet

3.392In Stock

4.000Expected 14/04/2026

Cut Tape

Rp6.788

Rp6.403

Rp5.669

Rp5.320

Reel

Rp4.036

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG18BB101MB1RB
Murata Electronics
1: Rp4.036
12.320In Stock
8.000Expected 01/05/2026

Mfr. Part No.
PRG18BB101MB1RB

Mouser Part No
81-PRG18BB101MB1RB

Murata Electronics

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

Learn More

Datasheet

12.320In Stock

8.000Expected 01/05/2026

Cut Tape

Rp4.036

Rp3.724

Rp3.266

Rp3.100

Reel

Rp2.422

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG18BB101MS1RB
Murata Electronics
1: Rp7.705
2.883In Stock

Mfr. Part No.
PRG18BB101MS1RB

Mouser Part No
81-PRG18BB101MS1RB

Murata Electronics

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

Learn More

Datasheet

2.883In Stock

Cut Tape

Rp7.705

Rp7.173

Rp6.696

Rp6.366

View

Reel

Rp4.660

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603

PRG18BB221MB1RB
Murata Electronics
1: Rp3.853
13.772In Stock
32.000On Order

Mfr. Part No.
PRG18BB221MB1RB

Mouser Part No
81-PRG18BB221MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603

Learn More

Datasheet

13.772In Stock

32.000On Order

Cut Tape

Rp3.853

Rp3.614

Rp2.990

Rp2.899

Reel

Rp2.403

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG18BB330MB1RB
Murata Electronics
1: Rp4.403
241In Stock
55.700On Order

Mfr. Part No.
PRG18BB330MB1RB

Mouser Part No
81-PRG18BB330MB1RB

Murata Electronics

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

Learn More

Datasheet

241In Stock

55.700On Order

Cut Tape

Rp4.403

Rp3.889

Rp3.412

Rp3.100

Reel

Rp2.000

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG18BB471MB1RB
Murata Electronics
1: Rp3.853
129In Stock
16.000On Order

Mfr. Part No.
PRG18BB471MB1RB

Mouser Part No
81-PRG18BB471MB1RB

Murata Electronics

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

Learn More

Datasheet

129In Stock

16.000On Order

Cut Tape

Rp3.853

Rp3.633

Rp3.192

Rp3.027

Reel

Rp1.926

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG21AR420MB1RA
Murata Electronics
1: Rp7.889
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

Rp7.889

Rp7.412

Rp6.971

Rp6.678

View

Reel

Rp5.375

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG21AR420MS1RA
Murata Electronics
1: Rp7.522
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

Rp7.522

Rp7.045

Rp6.568

Rp6.238

View

Reel

Rp4.531

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG21BC0R2MM1RA
Murata Electronics
1: Rp11.191
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

Rp11.191

Rp10.512

Rp9.833

Rp9.356

View

Reel

Rp5.962

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

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

PRG21BC0R6MM1RA
Murata Electronics
1: Rp8.990
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

Rp8.990

Rp8.402

Rp7.907

Rp7.632

View

Reel

Rp6.164

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4.000

POSISTOR® PTC Thermistors

All Results (64)

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POSISTOR® PTC Thermistors

All Results (64)

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