Passive Components – Mouser United Kingdom

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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: £0.45
2,028In Stock
4,000Expected 25/09/2026

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 25/09/2026

Cut Tape

£0.45

£0.41

£0.396

£0.341

View

Reel

£0.228

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG21BC4R7MM1RA
Murata Electronics
1: £0.375
4,440In 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

4,440In Stock

4,000Expected 28/09/2026

Cut Tape

£0.375

£0.353

£0.329

£0.313

View

Reel

£0.228

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BC3R3MM1RB
Murata Electronics
1: £0.255
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

£0.255

£0.235

£0.207

£0.197

Reel

£0.147

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminium Organic Polymer Capacitors

ECASD40E337M006KA0
Murata Electronics
1: £1.42
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

£1.42

£0.943

£0.738

£0.671

£0.521

Reel

£0.467

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRG18BC6R8MM1RB
Murata Electronics
1: £0.255
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

£0.255

£0.235

£0.207

£0.197

Reel

£0.147

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF15BB103RB6RC
Murata Electronics
1: £0.113
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

£0.113

£0.101

£0.088

£0.08

Reel

£0.05

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

PRF15BD102RB6RC
Murata Electronics
1: £0.105
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

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Datasheet

10,000Expected 07/09/2026

Cut Tape

£0.105

£0.096

£0.084

£0.079

View

Reel

£0.052

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MS5RA
Murata Electronics
1: £0.743
3,994Expected 30/09/2026

Mfr. Part No.
PRG21AR220MS5RA

Mouser Part No
81-PRG21AR220MS5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

3,994Expected 30/09/2026

Cut Tape

£0.743

£0.565

£0.486

£0.47

View

Reel

£0.26

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF03BB541NB7RL
Murata Electronics
1: £0.135
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

£0.135

£0.112

£0.099

£0.079

Reel

£0.052

View

Min.: 1
Mult.: 1

: 4,000

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

PRF21AR471QB5RA
Murata Electronics
1: £0.263
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

£0.263

£0.247

£0.217

£0.207

Reel

£0.15

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF21AS471QB5RA
Murata Electronics
4,000: £0.142
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

£0.142

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

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB221MS1RB
Murata Electronics
4,000: £0.175
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

£0.175

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

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB470MS1RB
Murata Electronics
4,000: £0.175
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

£0.175

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

PTC (Positive Temperature Coefficient) Thermistors

PRG18BB471MS1RB
Murata Electronics
4,000: £0.175
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

£0.175

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

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MB1RK
Murata Electronics
1: £0.488
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

£0.488

£0.37

£0.319

£0.308

View

Reel

£0.178

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

POSISTOR® PTC Thermistors

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