Passive Components – Mouser Singapore

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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 2.2 OHM 20% SMD 0805

PRG21BC2R2MM1RA
Murata Electronics
1: $0.816
2,028In Stock
4,000Expected 25/9/2026

Mfr. Part No.
PRG21BC2R2MM1RA

Mouser Part No
81-PRG21BC2R2MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0805

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Datasheet

2,028In Stock

4,000Expected 25/9/2026

Cut Tape

$0.816

$0.744

$0.718

$0.619

View

Reel

$0.413

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG21BC4R7MM1RA
Murata Electronics
1: $0.68
4,440In Stock
4,000Expected 28/9/2026

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

4,440In Stock

4,000Expected 28/9/2026

Cut Tape

$0.68

$0.639

$0.596

$0.567

View

Reel

$0.412

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BC3R3MM1RB
Murata Electronics
1: $0.462
3,624In 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

3,624In Stock

Cut Tape

$0.462

$0.426

$0.375

$0.358

Reel

$0.265

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminium Organic Polymer Capacitors

ECASD40E337M006KA0
Murata Electronics
1: $2.57
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

$2.57

$1.70

$1.34

$1.22

$0.944

Reel

$0.846

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRG18BC6R8MM1RB
Murata Electronics
1: $0.462
11,913Expected 5/10/2026
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 5/10/2026

Cut Tape

$0.462

$0.426

$0.375

$0.358

Reel

$0.265

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF15BB103RB6RC
Murata Electronics
1: $0.204
20,000Expected 31/8/2026

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 31/8/2026

Cut Tape

$0.204

$0.184

$0.16

$0.146

Reel

$0.09

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

PRF15BD102RB6RC
Murata Electronics
1: $0.19
10,000Expected 7/9/2026

Mfr. Part No.
PRF15BD102RB6RC

Mouser Part No
81-PRF15BD102RB6RC

Murata Electronics

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

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Datasheet

10,000Expected 7/9/2026

Cut Tape

$0.19

$0.174

$0.152

$0.143

Reel

$0.095

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MS5RA
Murata Electronics
1: $1.35
3,994Expected 30/9/2026

Mfr. Part No.
PRG21AR220MS5RA

Mouser Part No
81-PRG21AR220MS5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

3,994Expected 30/9/2026

Cut Tape

$1.35

$1.02

$0.881

$0.851

View

Reel

$0.471

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF03BB541NB7RL
Murata Electronics
1: $0.245
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRF03BB541NB7RL

Mouser Part No
81-PRF03BB541NB7RL

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$0.245

$0.203

$0.178

$0.143

Reel

$0.094

View

Min.: 1
Mult.: 1

: 4,000

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

PRF21AR471QB5RA
Murata Electronics
1: $0.476
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

$0.476

$0.447

$0.394

$0.375

Reel

$0.272

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF21AS471QB5RA
Murata Electronics
4,000: $0.258
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

$0.258

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

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB221MS1RB
Murata Electronics
4,000: $0.317
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
PRG18BB221MS1RB

Mouser Part No
81-PRG18BB221MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$0.317

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

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB470MS1RB
Murata Electronics
4,000: $0.317
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

$0.317

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

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB471MS1RB
Murata Electronics
4,000: $0.317
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

$0.317

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

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MB1RK
Murata Electronics
1: $0.884
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

$0.884

$0.67

$0.577

$0.558

View

Reel

$0.322

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

POSISTOR® PTC Thermistors

Types of Passive Components

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