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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 #

Aluminum Organic Polymer Capacitors

ECASD40E337M006KA0
Murata Electronics
1: $2.42
6,662In Stock

Mfr. Part #
ECASD40E337M006KA0

Mouser Part #
81-ECASD40E337M006KA

Murata Electronics

Aluminum Organic Polymer Capacitors

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Datasheet

6,662In Stock

Cut Tape

$2.42

$1.34

$1.22

$1.01

Reel

$0.842

View

Min.: 1
Mult.: 1

Reel: 3,000

Aluminum Organic Polymer Capacitors 15UF 25V ESR=40

ECASD31E156M040KA0
Murata Electronics
1: $2.39
5,487In Stock

Mfr. Part #
ECASD31E156M040KA0

Mouser Part #
81-ECASD31E156M040KA

Murata Electronics

Aluminum Organic Polymer Capacitors 15UF 25V ESR=40

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Datasheet

5,487In Stock

Cut Tape

$2.39

$1.23

$1.12

$0.919

Reel

$0.752

View

Min.: 1
Mult.: 1

Reel: 3,000

PTC Thermistors 1 OHM 20% SMD 0805

PRG21BC1R0MM1RA
Murata Electronics
1: $0.775
8,231In Stock

Mfr. Part #
PRG21BC1R0MM1RA

Mouser Part #
81-PRG21BC1R0MM1RA

Murata Electronics

PTC Thermistors 1 OHM 20% SMD 0805

Learn More

Datasheet

8,231In Stock

Cut Tape

$0.775

$0.729

$0.68

$0.646

View

Reel

$0.389

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BC471QB5RB
Murata Electronics
1: $0.202
16,705In Stock

Mfr. Part #
PRF18BC471QB5RB

Mouser Part #
81-PRF18BC471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

16,705In Stock

Cut Tape

$0.202

$0.197

$0.167

Reel

$0.166

$0.161

$0.13

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRG21AR220MS5RA
Murata Electronics
1: $1.53
380In Stock
4,000Expected 2026-02-13

Mfr. Part #
PRG21AR220MS5RA

Mouser Part #
81-PRG21AR220MS5RA

Murata Electronics

PTC Thermistors

Learn More

Datasheet

380In Stock

4,000Expected 2026-02-13

Cut Tape

$1.53

$1.17

$1.00

$0.97

View

Reel

$0.536

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BC471RB5RB
Murata Electronics
1: $0.605
3,855In Stock

Mfr. Part #
PRF18BC471RB5RB

Mouser Part #
81-PRF18BC471RB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

3,855In Stock

Cut Tape

$0.605

$0.55

$0.476

$0.448

Reel

$0.372

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BB471QB5RB
Murata Electronics
1: $0.512
7,031In Stock

Mfr. Part #
PRF18BB471QB5RB

Mouser Part #
81-PRF18BB471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

7,031In Stock

Cut Tape

$0.512

$0.481

$0.425

$0.403

Reel

$0.273

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 0.6x0.3mm 1kohm 115+/-5degC

PRF03BB102QB7RL
Murata Electronics
1: $0.202
13,599In Stock
New Product

Mfr. Part #
PRF03BB102QB7RL

Mouser Part #
81-PRF03BB102QB7RL

New Product

Murata Electronics

PTC Thermistors 0.6x0.3mm 1kohm 115+/-5degC

Learn More

Datasheet

13,599In Stock

Cut Tape

$0.202

$0.184

Reel

$0.184

Min.: 1
Mult.: 1

Reel: 15,000

PTC Thermistors 0.6x0.3mm 1kohm 105+/-5degC

PRF03BC102QB7RL
Murata Electronics
1: $0.202
14,465In Stock
New Product

Mfr. Part #
PRF03BC102QB7RL

Mouser Part #
81-PRF03BC102QB7RL

New Product

Murata Electronics

PTC Thermistors 0.6x0.3mm 1kohm 105+/-5degC

Learn More

Datasheet

14,465In Stock

Cut Tape

$0.202

$0.184

Reel

$0.184

Min.: 1
Mult.: 1

Reel: 15,000

PTC Thermistors 2.2 OHM 20% SMD 0603

PRG18BC2R2MM1RB
Murata Electronics
1: $0.496
9In Stock
NRND

Mfr. Part #
PRG18BC2R2MM1RB

Mouser Part #
81-PRG18BC2R2MM1RB

NRND

Murata Electronics

PTC Thermistors 2.2 OHM 20% SMD 0603

Learn More

Datasheet

9In Stock

Cut Tape

$0.496

$0.467

$0.412

$0.392

Reel

$0.291

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 3.3 OHM 20% SMD 0603

PRG18BC3R3MM1RB
Murata Electronics
1: $0.512
1,967In Stock
NRND

Mfr. Part #
PRG18BC3R3MM1RB

Mouser Part #
81-PRG18BC3R3MM1RB

NRND

Murata Electronics

PTC Thermistors 3.3 OHM 20% SMD 0603

Learn More

Datasheet

1,967In Stock

Cut Tape

$0.512

$0.476

$0.42

$0.40

Reel

$0.299

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 4.7 OHM 20% SMD 0805

PRG18BC4R7MM1RB
Murata Electronics
1: $0.496
13,055In Stock
NRND

Mfr. Part #
PRG18BC4R7MM1RB

Mouser Part #
81-PRG18BC4R7MM1RB

NRND

Murata Electronics

PTC Thermistors 4.7 OHM 20% SMD 0805

Learn More

Datasheet

13,055In Stock

Cut Tape

$0.496

$0.468

$0.412

$0.392

Reel

$0.296

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRF15BB102RB6RC
Murata Electronics
1: $0.202
30,224In Stock
30,000Expected 2026-02-13

Mfr. Part #
PRF15BB102RB6RC

Mouser Part #
81-PRF15BB102RB6RC

Murata Electronics

PTC Thermistors

Learn More

Datasheet

30,224In Stock

30,000Expected 2026-02-13

Cut Tape

$0.202

$0.191

$0.166

$0.158

Reel

$0.112

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 10,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BA471QB5RB
Murata Electronics
1: $0.248
18,678In Stock
12,000Expected 2026-04-23

Mfr. Part #
PRF18BA471QB5RB

Mouser Part #
81-PRF18BA471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

18,678In Stock

12,000Expected 2026-04-23

Cut Tape

$0.248

$0.228

$0.211

$0.20

Reel

$0.183

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 33 OHM 20% SMD 0603

PRG18BB330MS1RB
Murata Electronics
1: $0.62
7,500In Stock
4,000Expected 2026-04-14

Mfr. Part #
PRG18BB330MS1RB

Mouser Part #
81-PRG18BB330MS1RB

Murata Electronics

PTC Thermistors 33 OHM 20% SMD 0603

Learn More

Datasheet

7,500In Stock

4,000Expected 2026-04-14

Cut Tape

$0.62

$0.577

$0.535

$0.51

View

Reel

$0.415

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 470 OHM 20% SMD 0603

PRG18BB470MB1RB
Murata Electronics
1: $0.496
11,467In Stock
32,000On Order

Mfr. Part #
PRG18BB470MB1RB

Mouser Part #
81-PRG18BB470MB1RB

Murata Electronics

PTC Thermistors 470 OHM 20% SMD 0603

Learn More

Datasheet

11,467In Stock

32,000On Order

Cut Tape

$0.496

$0.46

$0.406

$0.384

Reel

$0.298

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors 22 OHM 20% SMD 0805

PRG21AR220MS1RK
Murata Electronics
1: $0.651
10,664In Stock

Mfr. Part #
PRG21AR220MS1RK

Mouser Part #
81-PRG21AR220MS1RK

Murata Electronics

PTC Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

10,664In Stock

Cut Tape

$0.651

$0.606

$0.566

$0.538

View

Reel

$0.38

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

PTC Thermistors 15 OHM 20% SMD 0805

PRG21BB150MB1RK
Murata Electronics
1: $0.667
11,531In Stock

Mfr. Part #
PRG21BB150MB1RK

Mouser Part #
81-PRG21BB150MB1RK

Murata Electronics

PTC Thermistors 15 OHM 20% SMD 0805

Learn More

Datasheet

11,531In Stock

Cut Tape

$0.667

$0.626

$0.586

$0.563

View

Reel

$0.408

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

PTC Thermistors 22 OHM 20% SMD 0805

PRG21BB220MB1RK
Murata Electronics
1: $0.729
9,233In Stock

Mfr. Part #
PRG21BB220MB1RK

Mouser Part #
81-PRG21BB220MB1RK

Murata Electronics

PTC Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

9,233In Stock

Cut Tape

$0.729

$0.68

$0.636

$0.603

View

Reel

$0.467

MouseReel Available

Min.: 1
Mult.: 1

Reel: 3,000

PTC Thermistors 6.8 OHM 20% SMD 0805

PRG21BC6R8MM1RA
Murata Electronics
1: $0.744
13,857In Stock
12,000Expected 2026-02-26

Mfr. Part #
PRG21BC6R8MM1RA

Mouser Part #
81-PRG21BC6R8MM1RA

Murata Electronics

PTC Thermistors 6.8 OHM 20% SMD 0805

Learn More

Datasheet

13,857In Stock

12,000Expected 2026-02-26

Cut Tape

$0.744

$0.699

$0.651

$0.62

View

Reel

$0.46

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRF18AS471QB5RB
Murata Electronics
1: $0.295
3,520In Stock

Mfr. Part #
PRF18AS471QB5RB

Mouser Part #
81-PRF18AS471QB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

3,520In Stock

Cut Tape

$0.295

$0.274

$0.242

$0.228

Reel

$0.133

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRF18BB471RB5RB
Murata Electronics
1: $0.326
3,144In Stock

Mfr. Part #
PRF18BB471RB5RB

Mouser Part #
81-PRF18BB471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

3,144In Stock

Cut Tape

$0.326

$0.298

$0.254

$0.239

Reel

$0.195

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRF18BD471RB5RB
Murata Electronics
1: $0.605
2,171In Stock

Mfr. Part #
PRF18BD471RB5RB

Mouser Part #
81-PRF18BD471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

2,171In Stock

Cut Tape

$0.605

$0.567

$0.502

$0.477

Reel

$0.363

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRF18BF471RB5RB
Murata Electronics
1: $0.62
1,694In Stock

Mfr. Part #
PRF18BF471RB5RB

Mouser Part #
81-PRF18BF471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

1,694In Stock

Cut Tape

$0.62

$0.578

$0.513

$0.488

Reel

$0.367

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

PTC Thermistors

PRF21BD471QB5RA
Murata Electronics
1: $0.682
1,710In Stock

Mfr. Part #
PRF21BD471QB5RA

Mouser Part #
81-PRF21BD471QB5RA

Murata Electronics

PTC Thermistors

Learn More

Datasheet

1,710In Stock

Cut Tape

$0.682

$0.626

$0.547

$0.487

Reel

$0.315

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

All Results (64)

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