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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 470 OHM 50% SMD 0603

PRF18BE471QB5RB
Murata Electronics
1: $0.17
21,250In Stock

Mfr. Part #
PRF18BE471QB5RB

Mouser Part #
81-PRF18BE471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

21,250In Stock

Cut Tape

$0.17

$0.154

$0.135

$0.128

Reel

$0.084

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 15 OHM 20% SMD 0805

PRG21BB150MB1RK
Murata Electronics
1: $0.55
10,074In Stock

Mfr. Part #
PRG21BB150MB1RK

Mouser Part #
81-PRG21BB150MB1RK

Murata Electronics

PTC Thermistors 15 OHM 20% SMD 0805

Learn More

Datasheet

10,074In Stock

Cut Tape

$0.55

$0.503

$0.432

$0.418

View

Reel

$0.259

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC Thermistors 4.7 OHM 20% SMD 0805

PRG18BC4R7MM1RB
Murata Electronics
1: $0.39
11,439In Stock
NRND

Mfr. Part #
PRG18BC4R7MM1RB

Mouser Part #
81-PRG18BC4R7MM1RB

NRND

Murata Electronics

PTC Thermistors 4.7 OHM 20% SMD 0805

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Datasheet

11,439In Stock

Cut Tape

$0.39

$0.358

$0.298

$0.247

Reel

$0.161

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF15BA102RB6RC
Murata Electronics
1: $0.18
9,889In Stock

Mfr. Part #
PRF15BA102RB6RC

Mouser Part #
81-PRF15BA102RB6RC

Murata Electronics

PTC Thermistors

Learn More

Datasheet

9,889In Stock

Cut Tape

$0.18

$0.149

$0.131

$0.105

View

Reel

$0.065

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC Thermistors

PRF18BE471RB5RB
Murata Electronics
1: $0.41
3,860In Stock

Mfr. Part #
PRF18BE471RB5RB

Mouser Part #
81-PRF18BE471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

3,860In Stock

Cut Tape

$0.41

$0.381

$0.337

$0.321

Reel

$0.232

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BG471RB5RB
Murata Electronics
1: $0.41
4,032In Stock

Mfr. Part #
PRF18BG471RB5RB

Mouser Part #
81-PRF18BG471RB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

4,032In Stock

$0.41

$0.381

$0.337

$0.319

View

Min.: 1
Mult.: 1

PTC Thermistors 470 OHM 50% SMD 0805

PRF21BC471QB5RA
Murata Electronics
1: $0.46
7,470In Stock

Mfr. Part #
PRF21BC471QB5RA

Mouser Part #
81-PRF21BC471QB5RA

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

7,470In Stock

Cut Tape

$0.46

$0.394

$0.34

$0.279

View

Reel

$0.178

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0805

PRF21BE471QB5RA
Murata Electronics
1: $0.38
6,837In Stock

Mfr. Part #
PRF21BE471QB5RA

Mouser Part #
81-PRF21BE471QB5RA

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

6,837In Stock

Cut Tape

$0.38

$0.356

$0.315

$0.279

Reel

$0.184

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

PRF03BA102QB7RL
Murata Electronics
1: $0.12
12,000In Stock
New Product

Mfr. Part #
PRF03BA102QB7RL

Mouser Part #
81-PRF03BA102QB7RL

New Product

Murata Electronics

PTC Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

Learn More

Datasheet

12,000In Stock

Cut Tape

$0.12

$0.109

$0.096

$0.08

View

Reel

$0.055

Min.: 1
Mult.: 1

: 15,000

PTC Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

PRF03BA102QS7RL
Murata Electronics
1: $0.15
10,400In Stock
New Product

Mfr. Part #
PRF03BA102QS7RL

Mouser Part #
81-PRF03BA102QS7RL

New Product

Murata Electronics

PTC Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC

Learn More

Datasheet

10,400In Stock

Cut Tape

$0.15

$0.132

$0.116

$0.093

View

Reel

$0.064

Min.: 1
Mult.: 1

: 15,000

PTC Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

PRF03BD102QB7RL
Murata Electronics
1: $0.12
12,000In Stock
New Product

Mfr. Part #
PRF03BD102QB7RL

Mouser Part #
81-PRF03BD102QB7RL

New Product

Murata Electronics

PTC Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

Learn More

Datasheet

12,000In Stock

Cut Tape

$0.12

$0.109

$0.096

$0.08

View

Reel

$0.055

Min.: 1
Mult.: 1

: 15,000

PTC Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

PRF03BD102QS7RL
Murata Electronics
1: $0.15
11,968In Stock
New Product

Mfr. Part #
PRF03BD102QS7RL

Mouser Part #
81-PRF03BD102QS7RL

New Product

Murata Electronics

PTC Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC

Learn More

Datasheet

11,968In Stock

Cut Tape

$0.15

$0.132

$0.116

$0.093

View

Reel

$0.064

Min.: 1
Mult.: 1

: 15,000

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

PRF03BB102QB7RL
Murata Electronics
1: $0.11
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

$0.11

$0.099

$0.086

$0.082

View

Reel

$0.053

Min.: 1
Mult.: 1

: 15,000

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

PRF03BC102QB7RL
Murata Electronics
1: $0.11
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

$0.11

$0.099

$0.086

$0.082

View

Reel

$0.053

Min.: 1
Mult.: 1

: 15,000

PTC Thermistors 33 OHM 20% SMD 0603

PRG18BB330MB1RB
Murata Electronics
1: $0.25
152,279In Stock

Mfr. Part #
PRG18BB330MB1RB

Mouser Part #
81-PRG18BB330MB1RB

Murata Electronics

PTC Thermistors 33 OHM 20% SMD 0603

Learn More

Datasheet

152,279In Stock

Cut Tape

$0.25

$0.23

$0.191

$0.159

Reel

$0.111

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminum Organic Polymer Capacitors 15UF 25V ESR=40

ECASD31E156M040KA0
Murata Electronics
1: $1.63
2,939In Stock
3,000Expected 12/21/2026

Mfr. Part #
ECASD31E156M040KA0

Mouser Part #
81-ECASD31E156M040KA

Murata Electronics

Aluminum Organic Polymer Capacitors 15UF 25V ESR=40

Learn More

Datasheet

2,939In Stock

3,000Expected 12/21/2026

Cut Tape

$1.63

$0.882

$0.801

$0.661

Reel

$0.536

View

Min.: 1
Mult.: 1

: 3,000

PTC Thermistors

PRF15BB102RB6RC
Murata Electronics
1: $0.15
56,930In Stock

Mfr. Part #
PRF15BB102RB6RC

Mouser Part #
81-PRF15BB102RB6RC

Murata Electronics

PTC Thermistors

Learn More

Datasheet

56,930In Stock

Cut Tape

$0.15

$0.135

$0.118

$0.105

Reel

$0.075

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BA471QB5RB
Murata Electronics
1: $0.20
64,034In Stock

Mfr. Part #
PRF18BA471QB5RB

Mouser Part #
81-PRF18BA471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

64,034In Stock

Cut Tape

$0.20

$0.181

$0.17

$0.158

Reel

$0.113

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 100 OHM 20% SMD 0603

PRG18BB101MB1RB
Murata Electronics
1: $0.26
42,099In Stock

Mfr. Part #
PRG18BB101MB1RB

Mouser Part #
81-PRG18BB101MB1RB

Murata Electronics

PTC Thermistors 100 OHM 20% SMD 0603

Learn More

Datasheet

42,099In Stock

Cut Tape

$0.26

$0.234

$0.194

$0.162

Reel

$0.104

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 33 OHM 20% SMD 0603

PRG18BB330MS1RB
Murata Electronics
1: $0.50
9,345In Stock

Mfr. Part #
PRG18BB330MS1RB

Mouser Part #
81-PRG18BB330MS1RB

Murata Electronics

PTC Thermistors 33 OHM 20% SMD 0603

Learn More

Datasheet

9,345In Stock

Cut Tape

$0.50

$0.461

$0.437

$0.383

View

Reel

$0.256

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 0603 47ohm 20% SMD

PRG18BB470MB1RB
Murata Electronics
1: $0.39
79,781In Stock
44,000Expected 11/16/2026

Mfr. Part #
PRG18BB470MB1RB

Mouser Part #
81-PRG18BB470MB1RB

Murata Electronics

PTC Thermistors 0603 47ohm 20% SMD

Learn More

Datasheet

79,781In Stock

44,000Expected 11/16/2026

Cut Tape

$0.39

$0.34

$0.287

$0.238

Reel

$0.156

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 42 OHM 20% SMD 0805

PRG21AR420MB1RA
Murata Electronics
1: $0.56
6,096In Stock

Mfr. Part #
PRG21AR420MB1RA

Mouser Part #
81-PRG21AR420MB1RA

Murata Electronics

PTC Thermistors 42 OHM 20% SMD 0805

Learn More

Datasheet

6,096In Stock

Cut Tape

$0.56

$0.506

$0.467

$0.425

View

Reel

$0.30

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 0.2 OHM 20% SMD 0805

PRG21BC0R2MM1RA
Murata Electronics
1: $0.75
8,126In Stock

Mfr. Part #
PRG21BC0R2MM1RA

Mouser Part #
81-PRG21BC0R2MM1RA

Murata Electronics

PTC Thermistors 0.2 OHM 20% SMD 0805

Learn More

Datasheet

8,126In Stock

Cut Tape

$0.75

$0.686

$0.57

$0.546

View

Reel

$0.332

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 2.2 OHM 20% SMD 0603

PRG18BC2R2MM1RB
Murata Electronics
1: $0.34
Non-Stocked Lead-Time 12 Weeks
NRND

Mfr. Part #
PRG18BC2R2MM1RB

Mouser Part #
81-PRG18BC2R2MM1RB

NRND

Murata Electronics

PTC Thermistors 2.2 OHM 20% SMD 0603

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$0.34

$0.313

$0.277

$0.263

Reel

$0.191

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 6.8 OHM 20% SMD 0805

PRG21BC6R8MM1RA
Murata Electronics
1: $0.50
18,755In Stock
16,000Expected 11/23/2026

Mfr. Part #
PRG21BC6R8MM1RA

Mouser Part #
81-PRG21BC6R8MM1RA

Murata Electronics

PTC Thermistors 6.8 OHM 20% SMD 0805

Learn More

Datasheet

18,755In Stock

16,000Expected 11/23/2026

Cut Tape

$0.50

$0.469

$0.437

$0.416

View

Reel

$0.28

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

All Results (65)

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