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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 (EUR) 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: 0,666 € 7.824In 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	7.824In Stock	Cut Tape 0,666 € 0,609 € 0,506 € 0,485 € View Reel 0,268 € 0,467 € 0,42 € 0,398 € 0,297 € 0,268 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805 PRG21BB150MB1RK Murata Electronics 1: 0,488 € 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 0,488 € 0,455 € 0,427 € 0,384 € View Reel 0,226 € 0,351 € 0,318 € 0,293 € 0,271 € 0,226 € MouseReel Available	Min.: 1 Mult.: 1 : 3.000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BA471QB5RB Murata Electronics 1: 0,124 € 64.028In 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	64.028In Stock	Cut Tape 0,124 € 0,106 € 0,099 € 0,09 € View Reel 0,078 € 0,084 € 0,083 € 0,078 € MouseReel Available	Min.: 1 Mult.: 1 Max.: 4.000 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0603 PRG18BC6R8MM1RB Murata Electronics 1: 0,364 € 11.888In Stock NRND	Mfr. Part No. PRG18BC6R8MM1RB Mouser Part No 81-PRG18BC6R8MM1RB NRND	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	11.888In Stock	Cut Tape 0,364 € 0,239 € 0,211 € 0,186 € Reel 0,149 € View 0,176 € 0,163 € 0,133 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors PRF18BE471RB5RB Murata Electronics 1: 0,364 € 3.660In 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	3.660In Stock	Cut Tape 0,364 € 0,338 € 0,299 € 0,285 € Reel 0,206 € View 0,256 € 0,214 € 0,194 € 0,192 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BG471RB5RB Murata Electronics 1: 0,364 € 3.912In 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	3.912In Stock	0,364 € 0,305 € 0,281 € 0,249 € View 0,225 € 0,207 € 0,199 € 0,189 € 0,187 €	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 PRF21BE471QB5RA Murata Electronics 1: 0,337 € 6.426In 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	6.426In Stock	Cut Tape 0,337 € 0,316 € 0,28 € 0,248 € Reel 0,163 € View 0,218 € 0,184 € 0,162 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805 PRG21BC0R6MM1RA Murata Electronics 1: 0,577 € 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 0,577 € 0,533 € 0,503 € 0,442 € View Reel 0,298 € 0,408 € 0,367 € 0,338 € 0,312 € 0,298 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors PRF15BA102RB6RC Murata Electronics 1: 0,16 € 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 0,16 € 0,132 € 0,116 € 0,093 € View Reel 0,059 € 0,082 € 0,078 € 0,07 € 0,059 € MouseReel Available	Min.: 1 Mult.: 1 : 10.000
PTC (Positive Temperature Coefficient) Thermistors PRG21AR220MS5RA Murata Electronics 1: 0,879 € 4.000In Stock	Mfr. Part No. PRG21AR220MS5RA Mouser Part No 81-PRG21AR220MS5RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	4.000In Stock	Cut Tape 0,879 € 0,668 € 0,575 € 0,556 € View Reel 0,307 € 0,473 € 0,411 € 0,363 € 0,307 €	Min.: 1 Mult.: 1 Max.: 12.000 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC PRF03BA102QB7RL Murata Electronics 1: 0,115 € 13.500In 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	13.500In Stock	Cut Tape 0,115 € 0,098 € 0,086 € 0,072 € View Reel 0,045 € 0,063 € 0,06 € 0,054 € 0,052 € 0,045 €	Min.: 1 Mult.: 1 : 15.000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC PRF03BA102QS7RL Murata Electronics 1: 0,142 € 11.700In 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	11.700In Stock	Cut Tape 0,142 € 0,118 € 0,104 € 0,083 € View Reel 0,054 € 0,074 € 0,07 € 0,063 € 0,06 € 0,054 €	Min.: 1 Mult.: 1 : 15.000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC PRF03BD102QB7RL Murata Electronics 1: 0,115 € 13.410In 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	13.410In Stock	Cut Tape 0,115 € 0,098 € 0,086 € 0,072 € View Reel 0,045 € 0,063 € 0,06 € 0,054 € 0,052 € 0,045 €	Min.: 1 Mult.: 1 : 15.000
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC PRF03BD102QS7RL Murata Electronics 1: 0,142 € 13.295In 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	13.295In Stock	Cut Tape 0,142 € 0,118 € 0,104 € 0,083 € View Reel 0,054 € 0,074 € 0,07 € 0,063 € 0,06 € 0,054 €	Min.: 1 Mult.: 1 : 15.000
PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC PRF03BB102QB7RL Murata Electronics 1: 0,098 € 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 0,098 € 0,088 € 0,076 € 0,073 € View Reel 0,047 € 0,064 € 0,06 € 0,054 € 0,05 € 0,047 €	Min.: 1 Mult.: 1 : 15.000
PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC PRF03BC102QB7RL Murata Electronics 1: 0,098 € 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 0,098 € 0,088 € 0,076 € 0,073 € View Reel 0,047 € 0,064 € 0,06 € 0,054 € 0,05 € 0,047 €	Min.: 1 Mult.: 1 : 15.000
PTC (Positive Temperature Coefficient) Thermistors PRF15BB102RB6RC Murata Electronics 1: 0,133 € 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 0,133 € 0,12 € 0,105 € 0,096 € Reel 0,067 € View 0,082 € 0,078 € 0,07 € 0,064 € MouseReel Available	Min.: 1 Mult.: 1 : 10.000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BG471QB5RB Murata Electronics 1: 0,151 € 38.042In Stock 32.000Expected 12/31/2026	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	38.042In Stock 32.000Expected 12/31/2026	Cut Tape 0,151 € 0,137 € 0,12 € 0,114 € Reel 0,083 € View 0,099 € 0,086 € 0,078 € 0,076 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603 PRG18BB101MB1RB Murata Electronics 1: 0,231 € 32.183In Stock 32.000Expected 12/4/2026	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	32.183In Stock 32.000Expected 12/4/2026	Cut Tape 0,231 € 0,208 € 0,172 € 0,144 € Reel 0,094 € View 0,135 € 0,101 € 0,083 € 0,081 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603 PRG18BB330MB1RB Murata Electronics 1: 0,222 € 137.806In 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	137.806In Stock	Cut Tape 0,222 € 0,204 € 0,17 € 0,141 € Reel 0,091 € View 0,134 € 0,099 € 0,082 € 0,081 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD PRG18BB470MB1RB Murata Electronics 1: 0,32 € 56.052In Stock 39.500Expected 11/30/2026	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	56.052In Stock 39.500Expected 11/30/2026	Cut Tape 0,32 € 0,286 € 0,24 € 0,198 € Reel 0,143 € View 0,189 € 0,174 € 0,129 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603 PRG18BB471MB1RB Murata Electronics 1: 0,222 € 59.951In Stock	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	59.951In Stock	Cut Tape 0,222 € 0,204 € 0,17 € 0,141 € Reel 0,097 € View 0,135 € 0,106 € 0,087 € 0,083 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805 PRG21BB220MB1RK Murata Electronics 1: 0,533 € 5.999In 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	5.999In Stock 15.000On Order On Order Ship Dates Mfr. No: PRG21BB220MB1RK Stock: 5.999 Can Dispatch Immediately On Order: 6.000 Expected 12/4/2026 9.000 Expected 12/11/2026 Factory Lead Time: 12 Weeks	Cut Tape 0,533 € 0,487 € 0,44 € 0,404 € View Reel 0,243 € 0,361 € 0,335 € 0,305 € 0,283 € 0,243 € MouseReel Available	Min.: 1 Mult.: 1 : 3.000
PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0805 PRG21BC2R2MM1RA Murata Electronics 1: 0,533 € 10.728In Stock	Mfr. Part No. PRG21BC2R2MM1RA Mouser Part No 81-PRG21BC2R2MM1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	10.728In Stock	Cut Tape 0,533 € 0,486 € 0,456 € 0,404 € View Reel 0,272 € 0,373 € 0,335 € 0,309 € 0,285 € 0,272 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
PTC (Positive Temperature Coefficient) Thermistors 4.7 OHM 20% SMD 0805 PRG21BC4R7MM1RA Murata Electronics 1: 0,444 € 7.733In 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	7.733In Stock	Cut Tape 0,444 € 0,417 € 0,389 € 0,37 € View Reel 0,269 € 0,353 € 0,318 € 0,299 € 0,269 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000

POSISTOR® PTC Thermistors

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POSISTOR® PTC Thermistors

Types of Passive Components