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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 Thermistors

PRF15BA102RB6RC
Murata Electronics
1: S/0.701
9,889In Stock

Mfr. Part #
PRF15BA102RB6RC

Mouser Part #
81-PRF15BA102RB6RC

Murata Electronics

PTC Thermistors

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Datasheet

9,889In Stock

Cut Tape

S/0.701

S/0.58

S/0.51

S/0.409

View

Reel

S/0.253

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC Thermistors

PRF15BC102RB6RC
Murata Electronics
1: S/0.701
12,269In Stock

Mfr. Part #
PRF15BC102RB6RC

Mouser Part #
81-PRF15BC102RB6RC

Murata Electronics

PTC Thermistors

Learn More

Datasheet

12,269In Stock

Cut Tape

S/0.701

S/0.619

S/0.545

S/0.471

Reel

S/0.296

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18AR471QB5RB
Murata Electronics
1: S/0.934
132In Stock
16,000On Order

Mfr. Part #
PRF18AR471QB5RB

Mouser Part #
81-PRF18AR471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

132In Stock

16,000On Order

Cut Tape

S/0.934

S/0.833

S/0.732

S/0.607

Reel

S/0.416

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF18AS471QB5RB
Murata Electronics
1: S/0.779
2,690In Stock

Mfr. Part #
PRF18AS471QB5RB

Mouser Part #
81-PRF18AS471QB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

2,690In Stock

Cut Tape

S/0.779

S/0.705

S/0.619

S/0.584

Reel

S/0.42

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BB471QB5RB
Murata Electronics
1: S/1.32
66In Stock
4,000Expected 11/18/2026

Mfr. Part #
PRF18BB471QB5RB

Mouser Part #
81-PRF18BB471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

66In Stock

4,000Expected 11/18/2026

Cut Tape

S/1.32

S/1.23

S/1.09

S/1.03

Reel

S/0.728

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF18BB471RB5RB
Murata Electronics
1: S/0.856
3,034In Stock

Mfr. Part #
PRF18BB471RB5RB

Mouser Part #
81-PRF18BB471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

3,034In Stock

Cut Tape

S/0.856

S/0.802

S/0.705

S/0.67

Reel

S/0.463

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BC471QB5RB
Murata Electronics
1: S/0.779
5,550In Stock
4,000Expected 9/22/2026

Mfr. Part #
PRF18BC471QB5RB

Mouser Part #
81-PRF18BC471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

5,550In Stock

4,000Expected 9/22/2026

Cut Tape

S/0.779

S/0.705

S/0.619

S/0.584

Reel

S/0.413

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BC471RB5RB
Murata Electronics
1: S/1.60
3,481In Stock

Mfr. Part #
PRF18BC471RB5RB

Mouser Part #
81-PRF18BC471RB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

3,481In Stock

Cut Tape

S/1.60

S/1.48

S/1.31

S/1.25

Reel

S/0.934

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BD471QB5RB
Murata Electronics
1: S/0.779
11,973In Stock

Mfr. Part #
PRF18BD471QB5RB

Mouser Part #
81-PRF18BD471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

11,973In Stock

Cut Tape

S/0.779

S/0.705

S/0.619

S/0.584

Reel

S/0.424

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF18BD471RB5RB
Murata Electronics
1: S/1.60
4,401In Stock

Mfr. Part #
PRF18BD471RB5RB

Mouser Part #
81-PRF18BD471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

4,401In Stock

Cut Tape

S/1.60

S/1.48

S/1.31

S/1.25

Reel

S/0.923

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BF471QB5RB
Murata Electronics
1: S/0.779
4,948In Stock
4,000Expected 10/29/2026

Mfr. Part #
PRF18BF471QB5RB

Mouser Part #
81-PRF18BF471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

4,948In Stock

4,000Expected 10/29/2026

Cut Tape

S/0.779

S/0.724

S/0.638

S/0.514

Reel

S/0.374

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF18BF471RB5RB
Murata Electronics
1: S/1.60
3,592In Stock

Mfr. Part #
PRF18BF471RB5RB

Mouser Part #
81-PRF18BF471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

3,592In Stock

Cut Tape

S/1.60

S/1.48

S/1.31

S/1.25

Reel

S/0.899

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BG471QB5RB
Murata Electronics
1: S/0.662
6,493In Stock
56,000On Order

Mfr. Part #
PRF18BG471QB5RB

Mouser Part #
81-PRF18BG471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

6,493In Stock

56,000On Order

Cut Tape

S/0.662

S/0.599

S/0.525

S/0.498

Reel

S/0.37

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0805

PRF21BB471QB5RA
Murata Electronics
1: S/1.36
1,430In Stock

Mfr. Part #
PRF21BB471QB5RA

Mouser Part #
81-PRF21BB471QB5RA

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

1,430In Stock

Cut Tape

S/1.36

S/1.28

S/1.13

S/1.07

Reel

S/0.732

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF21BD471QB5RA
Murata Electronics
1: S/1.75
1,018In Stock

Mfr. Part #
PRF21BD471QB5RA

Mouser Part #
81-PRF21BD471QB5RA

Murata Electronics

PTC Thermistors

Learn More

Datasheet

1,018In Stock

Cut Tape

S/1.75

S/1.46

S/1.28

S/1.12

Reel

S/0.763

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 100 OHM 20% SMD 0603

PRG18BB101MS1RB
Murata Electronics
1: S/1.95
2,638In Stock

Mfr. Part #
PRG18BB101MS1RB

Mouser Part #
81-PRG18BB101MS1RB

Murata Electronics

PTC Thermistors 100 OHM 20% SMD 0603

Learn More

Datasheet

2,638In Stock

Cut Tape

S/1.95

S/1.79

S/1.72

S/1.49

View

Reel

S/0.93

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 220 OHM 20% SMD 0603

PRG18BB221MB1RB
Murata Electronics
1: S/0.973
2,224In Stock
56,000Expected 10/8/2026

Mfr. Part #
PRG18BB221MB1RB

Mouser Part #
81-PRG18BB221MB1RB

Murata Electronics

PTC Thermistors 220 OHM 20% SMD 0603

Learn More

Datasheet

2,224In Stock

56,000Expected 10/8/2026

Cut Tape

S/0.973

S/0.895

S/0.743

S/0.619

Reel

S/0.397

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 22 OHM 20% SMD 0805

PRG21AR220MS1RK
Murata Electronics
1: S/2.34
6,644In Stock

Mfr. Part #
PRG21AR220MS1RK

Mouser Part #
81-PRG21AR220MS1RK

Murata Electronics

PTC Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

6,644In Stock

Cut Tape

S/2.34

S/1.92

S/1.83

S/1.60

View

Reel

S/1.06

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC Thermistors 42 OHM 20% SMD 0805

PRG21AR420MB1RA
Murata Electronics
1: S/1.83
2,096In Stock
4,000Expected 8/25/2026

Mfr. Part #
PRG21AR420MB1RA

Mouser Part #
81-PRG21AR420MB1RA

Murata Electronics

PTC Thermistors 42 OHM 20% SMD 0805

Learn More

Datasheet

2,096In Stock

4,000Expected 8/25/2026

Cut Tape

S/1.83

S/1.73

S/1.62

S/1.54

View

Reel

S/1.08

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 42 OHM 20% SMD 0805

PRG21AR420MS1RA
Murata Electronics
1: S/1.95
1,242In Stock

Mfr. Part #
PRG21AR420MS1RA

Mouser Part #
81-PRG21AR420MS1RA

Murata Electronics

PTC Thermistors 42 OHM 20% SMD 0805

Learn More

Datasheet

1,242In Stock

Cut Tape

S/1.95

S/1.79

S/1.72

S/1.49

View

Reel

S/0.954

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 22 OHM 20% SMD 0805

PRG21BB220MB1RK
Murata Electronics
1: S/2.22
262In Stock
12,000On Order

Mfr. Part #
PRG21BB220MB1RK

Mouser Part #
81-PRG21BB220MB1RK

Murata Electronics

PTC Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

262In Stock

12,000On Order

Cut Tape

S/2.22

S/2.02

S/1.68

S/1.63

View

Reel

S/1.00

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC Thermistors 0.6 OHM 20% SMD 0805

PRG21BC0R6MM1RA
Murata Electronics
1: S/2.53
3,870In Stock

Mfr. Part #
PRG21BC0R6MM1RA

Mouser Part #
81-PRG21BC0R6MM1RA

Murata Electronics

PTC Thermistors 0.6 OHM 20% SMD 0805

Learn More

Datasheet

3,870In Stock

Cut Tape

S/2.53

S/2.34

S/2.27

S/1.94

View

Reel

S/1.31

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 1 OHM 20% SMD 0805

PRG21BC1R0MM1RA
Murata Electronics
1: S/2.37
4,759In Stock

Mfr. Part #
PRG21BC1R0MM1RA

Mouser Part #
81-PRG21BC1R0MM1RA

Murata Electronics

PTC Thermistors 1 OHM 20% SMD 0805

Learn More

Datasheet

4,759In Stock

Cut Tape

S/2.37

S/2.17

S/2.10

S/1.80

View

Reel

S/1.21

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 2.2 OHM 20% SMD 0805

PRG21BC2R2MM1RA
Murata Electronics
1: S/2.34
1,258In Stock
12,000On Order

Mfr. Part #
PRG21BC2R2MM1RA

Mouser Part #
81-PRG21BC2R2MM1RA

Murata Electronics

PTC Thermistors 2.2 OHM 20% SMD 0805

Learn More

Datasheet

1,258In Stock

12,000On Order

Cut Tape

S/2.34

S/2.13

S/2.00

S/1.77

View

Reel

S/1.18

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRG21BC3R3MM1RA
Murata Electronics
1: S/2.06
4,439In Stock

Mfr. Part #
PRG21BC3R3MM1RA

Mouser Part #
81-PRG21BC3R3MM1RA

Murata Electronics

PTC Thermistors

Learn More

Datasheet

4,439In Stock

Cut Tape

S/2.06

S/1.93

S/1.81

S/1.72

View

Reel

S/1.26

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

POSISTOR® PTC Thermistors

All Results (65)

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POSISTOR® PTC Thermistors

All Results (65)

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