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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 4.7 OHM 20% SMD 0805

PRG18BC4R7MM1RB
Murata Electronics
1: $0.507
10,939In 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

10,939In Stock

Cut Tape

$0.507

$0.465

$0.387

$0.321

View

Reel

$0.205

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 15 OHM 20% SMD 0805

PRG21BB150MB1RK
Murata Electronics
1: $0.702
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

$0.702

$0.646

$0.56

$0.543

View

Reel

$0.337

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BE471QB5RB
Murata Electronics
1: $0.221
17,230In Stock

Mfr. Part #
PRF18BE471QB5RB

Mouser Part #
81-PRF18BE471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

17,230In Stock

Cut Tape

$0.221

$0.20

$0.176

$0.166

Reel

$0.109

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0805

PRF21BC471QB5RA
Murata Electronics
1: $0.598
6,170In Stock

Mfr. Part #
PRF21BC471QB5RA

Mouser Part #
81-PRF21BC471QB5RA

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

6,170In Stock

Cut Tape

$0.598

$0.512

$0.442

$0.363

Reel

$0.231

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 470 OHM 50% SMD 0805

PRF21BE471QB5RA
Murata Electronics
1: $0.494
6,707In Stock

Mfr. Part #
PRF21BE471QB5RA

Mouser Part #
81-PRF21BE471QB5RA

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0805

Learn More

Datasheet

6,707In Stock

Cut Tape

$0.494

$0.463

$0.41

$0.363

View

Reel

$0.235

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF15BA102RB6RC
Murata Electronics
1: $0.234
9,889In Stock

Mfr. Part #
PRF15BA102RB6RC

Mouser Part #
81-PRF15BA102RB6RC

Murata Electronics

PTC Thermistors

Learn More

Datasheet

9,889In Stock

Cut Tape

$0.234

$0.194

$0.17

$0.137

View

Reel

$0.085

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BG471RB5RB
Murata Electronics
1: $0.533
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

$0.533

$0.495

$0.438

$0.416

View

Min.: 1
Mult.: 1

PTC Thermistors

PRF18BE471RB5RB
Murata Electronics
1: $0.533
3,860In Stock

Mfr. Part #
PRF18BE471RB5RB

Mouser Part #
81-PRF18BE471RB5RB

Murata Electronics

PTC Thermistors

Learn More

Datasheet

3,860In Stock

Cut Tape

$0.533

$0.495

$0.438

$0.417

Reel

$0.302

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF03BA102QB7RL
Murata Electronics
1: $0.156
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

$0.156

$0.142

$0.125

$0.104

View

Reel

$0.072

Min.: 1
Mult.: 1

: 15,000

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

PRF03BA102QS7RL
Murata Electronics
1: $0.195
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

$0.195

$0.172

$0.151

$0.121

View

Reel

$0.083

Min.: 1
Mult.: 1

: 15,000

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

PRF03BD102QB7RL
Murata Electronics
1: $0.156
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

$0.156

$0.142

$0.125

$0.104

View

Reel

$0.072

Min.: 1
Mult.: 1

: 15,000

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

PRF03BD102QS7RL
Murata Electronics
1: $0.195
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

$0.195

$0.172

$0.151

$0.121

View

Reel

$0.083

Min.: 1
Mult.: 1

: 15,000

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

PRF03BB102QB7RL
Murata Electronics
1: $0.143
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

$0.143

$0.129

$0.112

$0.107

View

Reel

$0.069

Min.: 1
Mult.: 1

: 15,000

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

PRF03BC102QB7RL
Murata Electronics
1: $0.143
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

$0.143

$0.129

$0.112

$0.107

View

Reel

$0.069

Min.: 1
Mult.: 1

: 15,000

PTC Thermistors 33 OHM 20% SMD 0603

PRG18BB330MB1RB
Murata Electronics
1: $0.325
151,754In Stock

Mfr. Part #
PRG18BB330MB1RB

Mouser Part #
81-PRG18BB330MB1RB

Murata Electronics

PTC Thermistors 33 OHM 20% SMD 0603

Learn More

Datasheet

151,754In Stock

Cut Tape

$0.325

$0.299

$0.248

$0.207

Reel

$0.144

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors

PRF15BB102RB6RC
Murata Electronics
1: $0.195
56,930In Stock

Mfr. Part #
PRF15BB102RB6RC

Mouser Part #
81-PRF15BB102RB6RC

Murata Electronics

PTC Thermistors

Learn More

Datasheet

56,930In Stock

Cut Tape

$0.195

$0.176

$0.153

$0.137

Reel

$0.098

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BA471QB5RB
Murata Electronics
1: $0.26
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

$0.26

$0.235

$0.221

$0.205

View

Reel

$0.147

MouseReel Available

Min.: 1
Mult.: 1
Max.: 4,000

: 4,000

PTC Thermistors 100 OHM 20% SMD 0603

PRG18BB101MB1RB
Murata Electronics
1: $0.338
41,929In Stock
32,000Expected 12/3/2026

Mfr. Part #
PRG18BB101MB1RB

Mouser Part #
81-PRG18BB101MB1RB

Murata Electronics

PTC Thermistors 100 OHM 20% SMD 0603

Learn More

Datasheet

41,929In Stock

32,000Expected 12/3/2026

Cut Tape

$0.338

$0.304

$0.252

$0.211

Reel

$0.135

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 0603 47ohm 20% SMD

PRG18BB470MB1RB
Murata Electronics
1: $0.507
78,019In Stock
44,000Expected 11/26/2026

Mfr. Part #
PRG18BB470MB1RB

Mouser Part #
81-PRG18BB470MB1RB

Murata Electronics

PTC Thermistors 0603 47ohm 20% SMD

Learn More

Datasheet

78,019In Stock

44,000Expected 11/26/2026

Cut Tape

$0.507

$0.442

$0.373

$0.309

Reel

$0.203

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 2.2 OHM 20% SMD 0603

PRG18BC2R2MM1RB
Murata Electronics
1: $0.442
Non-Stocked Lead-Time 10 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 10 Weeks

Cut Tape

$0.442

$0.407

$0.36

$0.342

Reel

$0.248

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminum Organic Polymer Capacitors 15UF 25V ESR=40

ECASD31E156M040KA0
Murata Electronics
1: $2.12
2,839In 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

2,839In Stock

3,000Expected 12/21/2026

Cut Tape

$2.12

$1.15

$1.04

$0.859

Reel

$0.697

View

Min.: 1
Mult.: 1

: 3,000

Aluminum Organic Polymer Capacitors

ECASD40E337M006KA0
Murata Electronics
1: $2.42
2,718In Stock

Mfr. Part #
ECASD40E337M006KA0

Mouser Part #
81-ECASD40E337M006KA

Murata Electronics

Aluminum Organic Polymer Capacitors

Learn More

Datasheet

2,718In Stock

Cut Tape

$2.42

$1.64

$1.31

$1.16

Reel

$0.809

View

MouseReel Available

Min.: 1
Mult.: 1
Max.: 9,000

: 3,000

PTC Thermistors 470 OHM 50% SMD 0603

PRF18BG471QB5RB
Murata Electronics
1: $0.221
28,293In Stock
28,000Expected 10/19/2026

Mfr. Part #
PRF18BG471QB5RB

Mouser Part #
81-PRF18BG471QB5RB

Murata Electronics

PTC Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

28,293In Stock

28,000Expected 10/19/2026

Cut Tape

$0.221

$0.20

$0.176

$0.166

Reel

$0.121

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 42 OHM 20% SMD 0805

PRG21AR420MB1RA
Murata Electronics
1: $0.728
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

$0.728

$0.658

$0.607

$0.553

View

Reel

$0.39

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC Thermistors 0.2 OHM 20% SMD 0805

PRG21BC0R2MM1RA
Murata Electronics
1: $0.975
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

$0.975

$0.892

$0.741

$0.71

View

Reel

$0.432

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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