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 6.8 OHM 20% SMD 0805

PRG21BC6R8MM1RA
Murata Electronics
1: £0.375
18,755In Stock
16,000Expected 23/11/2026

Mfr. Part No.
PRG21BC6R8MM1RA

Mouser Part No
81-PRG21BC6R8MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0805

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Datasheet

18,755In Stock

16,000Expected 23/11/2026

Cut Tape

£0.375

£0.352

£0.328

£0.313

View

Reel

£0.213

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF15BC102RB6RC
Murata Electronics
1: £0.135
2,269In Stock
10,000Expected 12/11/2026

Mfr. Part No.
PRF15BC102RB6RC

Mouser Part No
81-PRF15BC102RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

2,269In Stock

10,000Expected 12/11/2026

Cut Tape

£0.135

£0.12

£0.105

£0.091

Reel

£0.054

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

PRF15BD102RB6RC
Murata Electronics
1: £0.113
10,000In Stock

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

10,000In Stock

Cut Tape

£0.113

£0.101

£0.088

£0.081

View

Reel

£0.052

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18AR471QB5RB
Murata Electronics
1: £0.165
132In Stock
16,000On Order

Mfr. Part No.
PRF18AR471QB5RB

Mouser Part No
81-PRF18AR471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

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Datasheet

132In Stock

16,000On Order

Cut Tape

£0.165

£0.144

£0.129

£0.107

Reel

£0.078

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18AS471QB5RB
Murata Electronics
1: £0.15
2,690In Stock

Mfr. Part No.
PRF18AS471QB5RB

Mouser Part No
81-PRF18AS471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

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Datasheet

2,690In Stock

Cut Tape

£0.15

£0.136

£0.12

£0.113

Reel

£0.081

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BB471QB5RB
Murata Electronics
1: £0.271
66In Stock
4,000Expected 18/11/2026

Mfr. Part No.
PRF18BB471QB5RB

Mouser Part No
81-PRF18BB471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

66In Stock

4,000Expected 18/11/2026

Cut Tape

£0.271

£0.251

£0.223

£0.205

Reel

£0.142

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BB471RB5RB
Murata Electronics
1: £0.165
3,034In Stock

Mfr. Part No.
PRF18BB471RB5RB

Mouser Part No
81-PRF18BB471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,034In Stock

Cut Tape

£0.165

£0.155

£0.136

£0.129

Reel

£0.089

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BC471QB5RB
Murata Electronics
1: £0.15
1,550In Stock
4,000Expected 22/09/2026

Mfr. Part No.
PRF18BC471QB5RB

Mouser Part No
81-PRF18BC471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

1,550In Stock

4,000Expected 22/09/2026

Cut Tape

£0.15

£0.136

£0.12

£0.113

Reel

£0.079

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BC471RB5RB
Murata Electronics
1: £0.308
3,481In Stock

Mfr. Part No.
PRF18BC471RB5RB

Mouser Part No
81-PRF18BC471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

3,481In Stock

Cut Tape

£0.308

£0.286

£0.253

£0.241

Reel

£0.18

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BD471QB5RB
Murata Electronics
1: £0.15
6,973In Stock
16,000Expected 16/11/2026

Mfr. Part No.
PRF18BD471QB5RB

Mouser Part No
81-PRF18BD471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

6,973In Stock

16,000Expected 16/11/2026

Cut Tape

£0.15

£0.136

£0.12

£0.113

Reel

£0.082

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BD471RB5RB
Murata Electronics
1: £0.308
4,401In Stock

Mfr. Part No.
PRF18BD471RB5RB

Mouser Part No
81-PRF18BD471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

4,401In Stock

Cut Tape

£0.308

£0.286

£0.253

£0.241

Reel

£0.178

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

PRF18BF471QB5RB
Murata Electronics
1: £0.15
4,903In Stock
4,000Expected 29/10/2026

Mfr. Part No.
PRF18BF471QB5RB

Mouser Part No
81-PRF18BF471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603

Learn More

Datasheet

4,903In Stock

4,000Expected 29/10/2026

Cut Tape

£0.15

£0.14

£0.123

£0.10

Reel

£0.067

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BF471RB5RB
Murata Electronics
1: £0.308
3,492In Stock

Mfr. Part No.
PRF18BF471RB5RB

Mouser Part No
81-PRF18BF471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,492In Stock

Cut Tape

£0.308

£0.286

£0.253

£0.241

Reel

£0.174

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF21BA471QB5RA
Murata Electronics
1: £0.263
5,271In Stock

Mfr. Part No.
PRF21BA471QB5RA

Mouser Part No
81-PRF21BA471QB5RA

Murata Electronics

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

Learn More

Datasheet

5,271In Stock

Cut Tape

£0.263

£0.247

£0.217

£0.207

Reel

£0.145

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF21BB471QB5RA
Murata Electronics
1: £0.263
1,430In Stock

Mfr. Part No.
PRF21BB471QB5RA

Mouser Part No
81-PRF21BB471QB5RA

Murata Electronics

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

Learn More

Datasheet

1,430In Stock

Cut Tape

£0.263

£0.247

£0.217

£0.207

Reel

£0.141

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF21BD471QB5RA
Murata Electronics
1: £0.338
1,018In Stock

Mfr. Part No.
PRF21BD471QB5RA

Mouser Part No
81-PRF21BD471QB5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

1,018In Stock

Cut Tape

£0.338

£0.282

£0.248

£0.217

Reel

£0.148

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603

PRG18BB101MS1RB
Murata Electronics
1: £0.375
2,638In Stock

Mfr. Part No.
PRG18BB101MS1RB

Mouser Part No
81-PRG18BB101MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603

Learn More

Datasheet

2,638In Stock

Cut Tape

£0.375

£0.346

£0.331

£0.287

View

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603

PRG18BB221MB1RB
Murata Electronics
1: £0.188
604In Stock
56,000Expected 08/10/2026

Mfr. Part No.
PRG18BB221MB1RB

Mouser Part No
81-PRG18BB221MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603

Learn More

Datasheet

604In Stock

56,000Expected 08/10/2026

Cut Tape

£0.188

£0.173

£0.143

£0.12

Reel

£0.078

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603

PRG18BB471MB1RB
Murata Electronics
1: £0.188
12,483In Stock
52,000On Order

Mfr. Part No.
PRG18BB471MB1RB

Mouser Part No
81-PRG18BB471MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603

Learn More

Datasheet

12,483In Stock

52,000On Order

Cut Tape

£0.188

£0.173

£0.143

£0.12

Reel

£0.078

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805

PRG21AR220MS1RK
Murata Electronics
1: £0.45
6,632In Stock

Mfr. Part No.
PRG21AR220MS1RK

Mouser Part No
81-PRG21AR220MS1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

6,632In Stock

Cut Tape

£0.45

£0.37

£0.354

£0.308

View

Reel

£0.204

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805

PRG21AR420MS1RA
Murata Electronics
1: £0.375
1,242In Stock

Mfr. Part No.
PRG21AR420MS1RA

Mouser Part No
81-PRG21AR420MS1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805

Learn More

Datasheet

1,242In Stock

Cut Tape

£0.375

£0.346

£0.331

£0.287

View

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805

PRG21BB220MB1RK
Murata Electronics
1: £0.428
252In Stock
12,000On Order

Mfr. Part No.
PRG21BB220MB1RK

Mouser Part No
81-PRG21BB220MB1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805

Learn More

Datasheet

252In Stock

12,000On Order

Cut Tape

£0.428

£0.388

£0.323

£0.313

View

Reel

£0.195

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805

PRG21BC0R6MM1RA
Murata Electronics
1: £0.488
3,870In Stock

Mfr. Part No.
PRG21BC0R6MM1RA

Mouser Part No
81-PRG21BC0R6MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805

Learn More

Datasheet

3,870In Stock

Cut Tape

£0.488

£0.45

£0.437

£0.374

View

Reel

£0.252

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 1 OHM 20% SMD 0805

PRG21BC1R0MM1RA
Murata Electronics
1: £0.458
4,759In Stock

Mfr. Part No.
PRG21BC1R0MM1RA

Mouser Part No
81-PRG21BC1R0MM1RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 1 OHM 20% SMD 0805

Learn More

Datasheet

4,759In Stock

Cut Tape

£0.458

£0.419

£0.405

£0.347

View

Reel

£0.233

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG21BC2R2MM1RA
Murata Electronics
1: £0.45
1,258In Stock
12,000On Order

Mfr. Part No.
PRG21BC2R2MM1RA

Mouser Part No
81-PRG21BC2R2MM1RA

Murata Electronics

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

Learn More

Datasheet

1,258In Stock

12,000On Order

Cut Tape

£0.45

£0.41

£0.385

£0.341

View

Reel

£0.228

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

POSISTOR® PTC Thermistors

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