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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 4.7 OHM 20% SMD 0805

PRG21BC4R7MM1RA
Murata Electronics
1: $0.50
4,420In Stock
4,000Expected 28/09/2026

Mfr. Part No.
PRG21BC4R7MM1RA

Mouser Part No
81-PRG21BC4R7MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 4.7 OHM 20% SMD 0805

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Datasheet

4,420In Stock

4,000Expected 28/09/2026

Cut Tape

$0.50

$0.47

$0.438

$0.417

View

Reel

$0.303

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BC1R0MM1RB
Murata Electronics
1: $0.34
1,790In Stock
NRND

Mfr. Part No.
PRG18BC1R0MM1RB

Mouser Part No
81-PRG18BC1R0MM1RB

NRND

Murata Electronics

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

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Datasheet

1,790In Stock

Cut Tape

$0.34

$0.316

$0.279

$0.266

Reel

$0.197

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 3.3 OHM 20% SMD 0603

PRG18BC3R3MM1RB
Murata Electronics
1: $0.34
3,524In Stock
NRND

Mfr. Part No.
PRG18BC3R3MM1RB

Mouser Part No
81-PRG18BC3R3MM1RB

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 3.3 OHM 20% SMD 0603

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Datasheet

3,524In Stock

Cut Tape

$0.34

$0.313

$0.276

$0.263

Reel

$0.195

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminium Organic Polymer Capacitors

ECASD40E337M006KA0
Murata Electronics
1: $1.89
2,718On Order

Mfr. Part No.
ECASD40E337M006KA0

Mouser Part No
81-ECASD40E337M006KA

Murata Electronics

Aluminium Organic Polymer Capacitors

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Datasheet

2,718On Order

Cut Tape

$1.89

$1.25

$0.982

$0.894

$0.694

Reel

$0.622

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRG18BC6R8MM1RB
Murata Electronics
1: $0.39
11,913Expected 05/10/2026
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

11,913Expected 05/10/2026

Cut Tape

$0.39

$0.336

$0.297

$0.246

Reel

$0.158

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF15BB103RB6RC
Murata Electronics
1: $0.15
20,000Expected 31/08/2026

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

20,000Expected 31/08/2026

Cut Tape

$0.15

$0.135

$0.118

$0.107

Reel

$0.066

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

PRF15BD102RB6RC
Murata Electronics
1: $0.14
10,000Expected 07/09/2026

Mfr. Part No.
PRF15BD102RB6RC

Mouser Part No
81-PRF15BD102RB6RC

Murata Electronics

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

Learn More

Datasheet

10,000Expected 07/09/2026

Cut Tape

$0.14

$0.128

$0.112

$0.105

Reel

$0.07

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MS5RA
Murata Electronics
1: $0.99
4,000Expected 23/11/2026

Mfr. Part No.
PRG21AR220MS5RA

Mouser Part No
81-PRG21AR220MS5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

4,000Expected 23/11/2026

Cut Tape

$0.99

$0.752

$0.648

$0.626

View

Reel

$0.346

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF03BB541NB7RL
Murata Electronics
1: $0.18
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF03BB541NB7RL

Mouser Part No
81-PRF03BB541NB7RL

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$0.18

$0.149

$0.131

$0.105

Reel

$0.069

View

Min.: 1
Mult.: 1

: 4,000

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

PRF21AR471QB5RA
Murata Electronics
1: $0.35
Lead-Time 12 Weeks

Mfr. Part No.
PRF21AR471QB5RA

Mouser Part No
81-PRF21AR471QB5RA

Murata Electronics

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

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Datasheet

Lead-Time 12 Weeks

Cut Tape

$0.35

$0.329

$0.29

$0.276

Reel

$0.20

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF21AS471QB5RA
Murata Electronics
4,000: $0.19
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF21AS471QB5RA

Mouser Part No
81-PRF21AS471QB5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.19

Min.: 4,000
Mult.: 4,000

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB221MS1RB
Murata Electronics
4,000: $0.233
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRG18BB221MS1RB

Mouser Part No
81-PRG18BB221MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.233

Min.: 4,000
Mult.: 4,000

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB470MS1RB
Murata Electronics
4,000: $0.233
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRG18BB470MS1RB

Mouser Part No
81-PRG18BB470MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$0.233

Min.: 4,000
Mult.: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB471MS1RB
Murata Electronics
4,000: $0.233
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRG18BB471MS1RB

Mouser Part No
81-PRG18BB471MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.233

Min.: 4,000
Mult.: 4,000

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MB1RK
Murata Electronics
1: $0.65
Lead-Time 12 Weeks

Mfr. Part No.
PRG21AR220MB1RK

Mouser Part No
81-PRG21AR220MB1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

Lead-Time 12 Weeks

Cut Tape

$0.65

$0.493

$0.424

$0.41

View

Reel

$0.237

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

POSISTOR® PTC Thermistors

All Results (65)

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POSISTOR® PTC Thermistors

All Results (65)

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