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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 33 OHM 20% SMD 0603

PRG18BB330MS1RB
Murata Electronics
1: £0.255
10,695In Stock

Mfr. Part No.
PRG18BB330MS1RB

Mouser Part No
81-PRG18BB330MS1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603

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Datasheet

10,695In Stock

Cut Tape

£0.255

£0.25

£0.237

£0.228

View

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG21AR220MS1RK
Murata Electronics
1: £0.315
10,664In Stock

Mfr. Part No.
PRG21AR220MS1RK

Mouser Part No
81-PRG21AR220MS1RK

Murata Electronics

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

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Datasheet

10,664In Stock

Cut Tape

£0.315

£0.293

£0.274

£0.26

View

Reel

£0.182

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRF18BA471QB5RB
Murata Electronics
1: £0.142
1,933In Stock

Mfr. Part No.
PRF18BA471QB5RB

Mouser Part No
81-PRF18BA471QB5RB

Murata Electronics

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

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Datasheet

1,933In Stock

Cut Tape

£0.142

£0.131

£0.078

£0.074

£0.059

Reel

£0.059

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRG21AR220MS5RA
Murata Electronics
1: £0.743
3,874In Stock

Mfr. Part No.
PRG21AR220MS5RA

Mouser Part No
81-PRG21AR220MS5RA

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,874In Stock

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 470 OHM 50% SMD 0603

PRF18BB471QB5RB
Murata Electronics
1: £0.248
6,841In Stock

Mfr. Part No.
PRF18BB471QB5RB

Mouser Part No
81-PRF18BB471QB5RB

Murata Electronics

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

Learn More

Datasheet

6,841In Stock

Cut Tape

£0.248

£0.233

£0.206

£0.196

Reel

£0.137

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRF18BC471RB5RB
Murata Electronics
1: £0.292
3,855In 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

3,855In Stock

Cut Tape

£0.292

£0.266

£0.23

£0.217

Reel

£0.18

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC

PRF03BB102QB7RL
Murata Electronics
1: £0.098
13,599In Stock
New Product

Mfr. Part No.
PRF03BB102QB7RL

Mouser Part No
81-PRF03BB102QB7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC

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Datasheet

13,599In Stock

Cut Tape

£0.098

£0.089

Reel

£0.089

Min.: 1
Mult.: 1

: 15,000

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC

PRF03BC102QB7RL
Murata Electronics
1: £0.083
14,465In Stock
New Product

Mfr. Part No.
PRF03BC102QB7RL

Mouser Part No
81-PRF03BC102QB7RL

New Product

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC

Learn More

Datasheet

14,465In Stock

Cut Tape

£0.083

£0.072

£0.062

£0.059

View

Reel

£0.042

Min.: 1
Mult.: 1

: 15,000

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

PRG18BC4R7MM1RB
Murata Electronics
1: £0.24
13,030In Stock
NRND

Mfr. Part No.
PRG18BC4R7MM1RB

Mouser Part No
81-PRG18BC4R7MM1RB

NRND

Murata Electronics

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

Learn More

Datasheet

13,030In Stock

Cut Tape

£0.24

£0.227

£0.20

£0.19

Reel

£0.145

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BC1R0MM1RB
Murata Electronics
1: £0.248
3,223In Stock
NRND

Mfr. Part No.
PRG18BC1R0MM1RB

Mouser Part No
81-PRG18BC1R0MM1RB

NRND

Murata Electronics

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

Learn More

Datasheet

3,223In Stock

Cut Tape

£0.248

£0.228

£0.201

£0.191

Reel

£0.15

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0603

PRG18BC2R2MM1RB
Murata Electronics
1: £0.24
Non-Stocked Lead-Time 12 Weeks
NRND

Mfr. Part No.
PRG18BC2R2MM1RB

Mouser Part No
81-PRG18BC2R2MM1RB

NRND

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0603

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Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

£0.24

£0.226

£0.20

£0.19

Reel

£0.141

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF15BB102RB6RC
Murata Electronics
1: £0.098
49,779In Stock

Mfr. Part No.
PRF15BB102RB6RC

Mouser Part No
81-PRF15BB102RB6RC

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

49,779In Stock

Cut Tape

£0.098

£0.093

£0.08

£0.077

Reel

£0.054

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

PRF18BE471QB5RB
Murata Electronics
1: £0.127
23,376In Stock

Mfr. Part No.
PRF18BE471QB5RB

Mouser Part No
81-PRF18BE471QB5RB

Murata Electronics

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

Learn More

Datasheet

23,376In Stock

Cut Tape

£0.127

£0.113

£0.10

£0.094

Reel

£0.064

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BB101MB1RB
Murata Electronics
1: £0.165
14,768In Stock
28,000On Order

Mfr. Part No.
PRG18BB101MB1RB

Mouser Part No
81-PRG18BB101MB1RB

Murata Electronics

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

Learn More

Datasheet

14,768In Stock

28,000On Order

Cut Tape

£0.165

£0.153

£0.134

£0.127

Reel

£0.099

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG18BB221MB1RB
Murata Electronics
1: £0.165
42,766In Stock

Mfr. Part No.
PRG18BB221MB1RB

Mouser Part No
81-PRG18BB221MB1RB

Murata Electronics

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

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Datasheet

42,766In Stock

Cut Tape

£0.165

£0.15

£0.12

£0.118

Reel

£0.102

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD

PRG18BB470MB1RB
Murata Electronics
1: £0.225
17,344In Stock
16,000Expected 16/06/2026

Mfr. Part No.
PRG18BB470MB1RB

Mouser Part No
81-PRG18BB470MB1RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD

Learn More

Datasheet

17,344In Stock

16,000Expected 16/06/2026

Cut Tape

£0.225

£0.208

£0.186

£0.177

Reel

£0.138

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805

PRG21BB150MB1RK
Murata Electronics
1: £0.353
11,106In Stock

Mfr. Part No.
PRG21BB150MB1RK

Mouser Part No
81-PRG21BB150MB1RK

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805

Learn More

Datasheet

11,106In Stock

Cut Tape

£0.353

£0.329

£0.307

£0.292

View

Reel

£0.208

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRG21BB220MB1RK
Murata Electronics
1: £0.353
5,754In Stock

Mfr. Part No.
PRG21BB220MB1RK

Mouser Part No
81-PRG21BB220MB1RK

Murata Electronics

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

Learn More

Datasheet

5,754In Stock

Cut Tape

£0.353

£0.335

£0.313

£0.297

View

Reel

£0.226

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

PRG21BC1R0MM1RA
Murata Electronics
1: £0.375
6,049In 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

6,049In Stock

Cut Tape

£0.375

£0.353

£0.33

£0.313

View

Reel

£0.235

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
6,090In Stock

Mfr. Part No.
PRG21BC4R7MM1RA

Mouser Part No
81-PRG21BC4R7MM1RA

Murata Electronics

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

Learn More

Datasheet

6,090In Stock

Cut Tape

£0.375

£0.353

£0.329

£0.313

View

Reel

£0.224

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

PRG21BC6R8MM1RA
Murata Electronics
1: £0.368
16,803In Stock
12,000Expected 19/05/2026

Mfr. Part No.
PRG21BC6R8MM1RA

Mouser Part No
81-PRG21BC6R8MM1RA

Murata Electronics

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

Learn More

Datasheet

16,803In Stock

12,000Expected 19/05/2026

Cut Tape

£0.368

£0.345

£0.321

£0.306

View

Reel

£0.216

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Aluminium Organic Polymer Capacitors

ECASD40E337M006KA0
Murata Electronics
1: £1.38
469In Stock

Mfr. Part No.
ECASD40E337M006KA0

Mouser Part No
81-ECASD40E337M006KA

Murata Electronics

Aluminium Organic Polymer Capacitors

Learn More

Datasheet

469In Stock

Cut Tape

£1.38

£0.899

£0.711

£0.646

Reel

£0.433

View

Min.: 1
Mult.: 1

: 3,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18AS471QB5RB
Murata Electronics
1: £0.142
3,420In Stock

Mfr. Part No.
PRF18AS471QB5RB

Mouser Part No
81-PRF18AS471QB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,420In Stock

Cut Tape

£0.142

£0.133

£0.117

£0.11

Reel

£0.065

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BB471RB5RB
Murata Electronics
1: £0.158
3,044In Stock

Mfr. Part No.
PRF18BB471RB5RB

Mouser Part No
81-PRF18BB471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

3,044In Stock

Cut Tape

£0.158

£0.144

£0.123

£0.115

Reel

£0.094

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

PTC (Positive Temperature Coefficient) Thermistors

PRF18BD471RB5RB
Murata Electronics
1: £0.292
1,671In Stock

Mfr. Part No.
PRF18BD471RB5RB

Mouser Part No
81-PRF18BD471RB5RB

Murata Electronics

PTC (Positive Temperature Coefficient) Thermistors

Learn More

Datasheet

1,671In Stock

Cut Tape

£0.292

£0.275

£0.244

£0.231

Reel

£0.175

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

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