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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.
PTC (Positive Temperature Coefficient) Thermistors 0.2 OHM 20% SMD 0805 PRG21BC0R2MM1RA Murata Electronics 1: 0.604 CHF 8 124In Stock	Mfr. Part No. PRG21BC0R2MM1RA Mouser Part No 81-PRG21BC0R2MM1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0.2 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	8 124In Stock	Cut Tape 0.604 CHF 0.552 CHF 0.459 CHF 0.44 CHF View Reel 0.252 CHF 0.423 CHF 0.381 CHF 0.36 CHF 0.285 CHF 0.252 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805 PRG21BB150MB1RK Murata Electronics 1: 0.459 CHF 9 044In Stock	Mfr. Part No. PRG21BB150MB1RK Mouser Part No 81-PRG21BB150MB1RK	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	9 044In Stock	Cut Tape 0.459 CHF 0.418 CHF 0.348 CHF 0.336 CHF View Reel 0.209 CHF 0.318 CHF 0.288 CHF 0.273 CHF 0.256 CHF 0.209 CHF MouseReel Available	Min.: 1 Mult.: 1 : 3 000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BA471QB5RB Murata Electronics 1: 0.161 CHF 64 029In Stock	Mfr. Part No. PRF18BA471QB5RB Mouser Part No 81-PRF18BA471QB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	64 029In Stock	Cut Tape 0.161 CHF 0.149 CHF 0.131 CHF 0.127 CHF View Reel 0.095 CHF 0.111 CHF 0.107 CHF 0.095 CHF MouseReel Available	Min.: 1 Mult.: 1 Max.: 4 000 : 4 000
PTC (Positive Temperature Coefficient) Thermistors PRF15BA102RB6RC Murata Electronics 1: 0.145 CHF 9 809In Stock	Mfr. Part No. PRF15BA102RB6RC Mouser Part No 81-PRF15BA102RB6RC	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	9 809In Stock	Cut Tape 0.145 CHF 0.12 CHF 0.106 CHF 0.084 CHF View Reel 0.053 CHF 0.074 CHF 0.071 CHF 0.064 CHF 0.053 CHF MouseReel Available	Min.: 1 Mult.: 1 : 10 000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BG471RB5RB Murata Electronics 1: 0.33 CHF 4 032In Stock	Mfr. Part No. PRF18BG471RB5RB Mouser Part No 81-PRF18BG471RB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	4 032In Stock	0.33 CHF 0.302 CHF 0.271 CHF 0.236 CHF View 0.211 CHF 0.194 CHF 0.193 CHF 0.176 CHF 0.173 CHF	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 PRF21BE471QB5RA Murata Electronics 1: 0.306 CHF 6 631In Stock	Mfr. Part No. PRF21BE471QB5RA Mouser Part No 81-PRF21BE471QB5RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	6 631In Stock	Cut Tape 0.306 CHF 0.286 CHF 0.254 CHF 0.225 CHF Reel 0.154 CHF View 0.198 CHF 0.167 CHF 0.153 CHF 0.15 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors PRF18BE471RB5RB Murata Electronics 1: 0.33 CHF 3 760In Stock	Mfr. Part No. PRF18BE471RB5RB Mouser Part No 81-PRF18BE471RB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	3 760In Stock	Cut Tape 0.33 CHF 0.307 CHF 0.271 CHF 0.258 CHF Reel 0.187 CHF View 0.232 CHF 0.194 CHF 0.182 CHF 0.177 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805 PRG21BC0R6MM1RA Murata Electronics 1: 0.523 CHF 3 820In 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 about Murata Electronics murata prg ptc thermistors	Datasheet	3 820In Stock	Cut Tape 0.523 CHF 0.483 CHF 0.457 CHF 0.401 CHF View Reel 0.271 CHF 0.371 CHF 0.332 CHF 0.307 CHF 0.284 CHF 0.271 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC PRF03BA102QB7RL Murata Electronics 1: 0.105 CHF 12 000In Stock New Product	Mfr. Part No. PRF03BA102QB7RL Mouser Part No 81-PRF03BA102QB7RL New Product	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	12 000In Stock	Cut Tape 0.105 CHF 0.089 CHF 0.078 CHF 0.066 CHF View Reel 0.041 CHF 0.057 CHF 0.054 CHF 0.049 CHF 0.047 CHF 0.041 CHF	Min.: 1 Mult.: 1 : 15 000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC PRF03BA102QS7RL Murata Electronics 1: 0.129 CHF 10 400In Stock New Product	Mfr. Part No. PRF03BA102QS7RL Mouser Part No 81-PRF03BA102QS7RL New Product	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	10 400In Stock	Cut Tape 0.129 CHF 0.107 CHF 0.095 CHF 0.076 CHF View Reel 0.049 CHF 0.066 CHF 0.064 CHF 0.057 CHF 0.054 CHF 0.049 CHF	Min.: 1 Mult.: 1 : 15 000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC PRF03BD102QB7RL Murata Electronics 1: 0.105 CHF 11 920In Stock New Product	Mfr. Part No. PRF03BD102QB7RL Mouser Part No 81-PRF03BD102QB7RL New Product	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	11 920In Stock	Cut Tape 0.105 CHF 0.089 CHF 0.078 CHF 0.066 CHF View Reel 0.041 CHF 0.057 CHF 0.054 CHF 0.049 CHF 0.047 CHF 0.041 CHF	Min.: 1 Mult.: 1 : 15 000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC PRF03BD102QS7RL Murata Electronics 1: 0.129 CHF 11 818In Stock New Product	Mfr. Part No. PRF03BD102QS7RL Mouser Part No 81-PRF03BD102QS7RL New Product	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	11 818In Stock	Cut Tape 0.129 CHF 0.107 CHF 0.095 CHF 0.076 CHF View Reel 0.049 CHF 0.066 CHF 0.064 CHF 0.057 CHF 0.054 CHF 0.049 CHF	Min.: 1 Mult.: 1 : 15 000
PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC PRF03BB102QB7RL Murata Electronics 1: 0.089 CHF 13 539In 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 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	13 539In Stock	Cut Tape 0.089 CHF 0.08 CHF 0.069 CHF 0.066 CHF View Reel 0.043 CHF 0.058 CHF 0.054 CHF 0.049 CHF 0.045 CHF 0.043 CHF	Min.: 1 Mult.: 1 : 15 000
PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC PRF03BC102QB7RL Murata Electronics 1: 0.089 CHF 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 about Murata Electronics murata prf ptc thermistors	Datasheet	14 465In Stock	Cut Tape 0.089 CHF 0.08 CHF 0.069 CHF 0.066 CHF View Reel 0.043 CHF 0.058 CHF 0.054 CHF 0.049 CHF 0.045 CHF 0.043 CHF	Min.: 1 Mult.: 1 : 15 000
PTC (Positive Temperature Coefficient) Thermistors PRF15BB102RB6RC Murata Electronics 1: 0.121 CHF 46 274In Stock	Mfr. Part No. PRF15BB102RB6RC Mouser Part No 81-PRF15BB102RB6RC	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	46 274In Stock	Cut Tape 0.121 CHF 0.109 CHF 0.095 CHF 0.087 CHF Reel 0.061 CHF View 0.074 CHF 0.071 CHF 0.064 CHF 0.058 CHF MouseReel Available	Min.: 1 Mult.: 1 : 10 000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BG471QB5RB Murata Electronics 1: 0.137 CHF 50 048In Stock 32 000Expected 31/12/2026	Mfr. Part No. PRF18BG471QB5RB Mouser Part No 81-PRF18BG471QB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	50 048In Stock 32 000Expected 31/12/2026	Cut Tape 0.137 CHF 0.124 CHF 0.109 CHF 0.103 CHF Reel 0.075 CHF View 0.09 CHF 0.078 CHF 0.071 CHF 0.069 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603 PRG18BB101MB1RB Murata Electronics 1: 0.21 CHF 37 113In Stock 32 000Expected 03/12/2026	Mfr. Part No. PRG18BB101MB1RB Mouser Part No 81-PRG18BB101MB1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	37 113In Stock 32 000Expected 03/12/2026	Cut Tape 0.21 CHF 0.188 CHF 0.156 CHF 0.13 CHF Reel 0.084 CHF View 0.123 CHF 0.092 CHF 0.076 CHF 0.074 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603 PRG18BB221MB1RB Murata Electronics 1: 0.226 CHF 24 679In Stock 96 000On Order	Mfr. Part No. PRG18BB221MB1RB Mouser Part No 81-PRG18BB221MB1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	24 679In Stock 96 000On Order On Order Ship Dates Mfr. No: PRG18BB221MB1RB Stock: 24 679 Can Dispatch Immediately On Order: 36 000 Expected 03/12/2026 60 000 Expected 24/12/2026 Factory Lead Time: 12 Weeks	Cut Tape 0.226 CHF 0.198 CHF 0.16 CHF 0.148 CHF Reel 0.099 CHF View 0.123 CHF 0.108 CHF 0.089 CHF 0.084 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603 PRG18BB330MB1RB Murata Electronics 1: 0.201 CHF 142 163In Stock	Mfr. Part No. PRG18BB330MB1RB Mouser Part No 81-PRG18BB330MB1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	142 163In Stock	Cut Tape 0.201 CHF 0.185 CHF 0.154 CHF 0.128 CHF Reel 0.082 CHF View 0.122 CHF 0.09 CHF 0.074 CHF 0.073 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD PRG18BB470MB1RB Murata Electronics 1: 0.298 CHF 52 811In Stock 44 000Expected 26/11/2026	Mfr. Part No. PRG18BB470MB1RB Mouser Part No 81-PRG18BB470MB1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	52 811In Stock 44 000Expected 26/11/2026	Cut Tape 0.298 CHF 0.264 CHF 0.222 CHF 0.183 CHF Reel 0.128 CHF View 0.173 CHF 0.152 CHF 0.117 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603 PRG18BB471MB1RB Murata Electronics 1: 0.201 CHF 37 251In Stock 24 000Expected 20/11/2026	Mfr. Part No. PRG18BB471MB1RB Mouser Part No 81-PRG18BB471MB1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	37 251In Stock 24 000Expected 20/11/2026	Cut Tape 0.201 CHF 0.185 CHF 0.154 CHF 0.128 CHF Reel 0.087 CHF View 0.123 CHF 0.095 CHF 0.078 CHF 0.075 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805 PRG21BB220MB1RK Murata Electronics 1: 0.483 CHF 6 000In Stock 15 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 about Murata Electronics murata prg ptc thermistors	Datasheet	6 000In Stock 15 000On Order On Order Ship Dates Mfr. No: PRG21BB220MB1RK Stock: 6 000 Can Dispatch Immediately On Order: 6 000 Expected 08/12/2026 9 000 Expected 11/12/2026 Factory Lead Time: 12 Weeks	Cut Tape 0.483 CHF 0.441 CHF 0.411 CHF 0.366 CHF View Reel 0.221 CHF 0.327 CHF 0.303 CHF 0.277 CHF 0.256 CHF 0.221 CHF MouseReel Available	Min.: 1 Mult.: 1 : 3 000
PTC (Positive Temperature Coefficient) Thermistors 4.7 OHM 20% SMD 0805 PRG21BC4R7MM1RA Murata Electronics 1: 0.402 CHF 8 226In 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 about Murata Electronics murata prg ptc thermistors	Datasheet	8 226In Stock	Cut Tape 0.402 CHF 0.378 CHF 0.353 CHF 0.336 CHF View Reel 0.244 CHF 0.319 CHF 0.288 CHF 0.271 CHF 0.244 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0603 PRG18BC2R2MM1RB Murata Electronics 1: 0.33 CHF 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 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape 0.33 CHF 0.30 CHF 0.235 CHF 0.21 CHF Reel 0.135 CHF View 0.191 CHF 0.148 CHF 0.122 CHF 0.121 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000
PTC (Positive Temperature Coefficient) Thermistors 3.3 OHM 20% SMD 0603 PRG18BC3R3MM1RB Murata Electronics 1: 0.314 CHF 3 344In 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 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	3 344In Stock	Cut Tape 0.314 CHF 0.287 CHF 0.239 CHF 0.198 CHF Reel 0.157 CHF View 0.183 CHF 0.164 CHF 0.142 CHF 0.14 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

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