PTC (Positive Temperature Coefficient) Thermistors

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PRF PTC Thermistors

Murata Electronics PRF Series PTC Thermistors offer a fast response time, 470Ω to 10kΩ resistance range, and 2mm x 1.25mm maximum dimensions. PRF thermistors accurately detect overheating in multiple areas using a very simple circuit through sharp changes in resistance. Using sharp changes in electrical resistance also translates into outstanding noise resistance. Murata PRF Series PTC Thermistors are ideal for mobile phones, power supplies, LED bulbs, and automotive applications.

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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.	Series	Resistance	Tolerance	Mounting Style	Termination Style	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 PRF21BA471QB5RA Murata Electronics 1: 0,301 € 1.271In Stock 4.000Expected 12/15/2026	Mfr. Part No. PRF21BA471QB5RA Mouser Part No 81-PRF21BA471QB5RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	1.271In Stock 4.000Expected 12/15/2026	Cut Tape 0,301 € 0,283 € 0,249 € 0,237 € Reel 0,183 € View 0,212 € 0,195 € 0,176 € 0,165 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 140 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 PRF21BB471QB5RA Murata Electronics 1: 0,301 € 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 about Murata Electronics murata prf ptc thermistors	Datasheet	1.430In Stock	Cut Tape 0,301 € 0,283 € 0,249 € 0,237 € Reel 0,162 € View 0,212 € 0,203 € 0,158 € 0,156 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 130 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF21BD471QB5RA Murata Electronics 1: 0,387 € 318In Stock 4.000Expected 1/8/2027	Mfr. Part No. PRF21BD471QB5RA Mouser Part No 81-PRF21BD471QB5RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	318In Stock 4.000Expected 1/8/2027	Cut Tape 0,387 € 0,32 € 0,279 € 0,246 € Reel 0,161 € View 0,218 € 0,175 € 0,155 € 0,151 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 110 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BB471QB5RB Murata Electronics 1: 0,31 € 8In Stock 4.000Expected 11/25/2026	Mfr. Part No. PRF18BB471QB5RB Mouser Part No 81-PRF18BB471QB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	8In Stock 4.000Expected 11/25/2026	Cut Tape 0,31 € 0,288 € 0,255 € 0,235 € Reel 0,163 € View 0,209 € 0,187 € 0,159 € 0,158 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 140 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF18BD471RB5RB Murata Electronics 1: 0,353 € 7.599Expected 12/4/2026	Mfr. Part No. PRF18BD471RB5RB Mouser Part No 81-PRF18BD471RB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	7.599Expected 12/4/2026	Cut Tape 0,353 € 0,328 € 0,29 € 0,276 € Reel 0,204 € View 0,248 € 0,215 € 0,196 € 0,192 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 120 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF18BB471RB5RB Murata Electronics 1: 0,206 € 3.961Expected 12/11/2026	Mfr. Part No. PRF18BB471RB5RB Mouser Part No 81-PRF18BB471RB5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	3.961Expected 12/11/2026	Cut Tape 0,206 € 0,188 € 0,165 € 0,157 € Reel 0,112 € View 0,135 € 0,12 € 0,101 € 0,098 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 140 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF03BB541NB7RL Murata Electronics 1: 0,155 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. PRF03BB541NB7RL Mouser Part No 81-PRF03BB541NB7RL	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape 0,155 € 0,128 € 0,113 € 0,09 € View Reel 0,059 € 0,079 € 0,06 € 0,059 €	Min.: 1 Mult.: 1 : 4.000	PRF	540 Ohms	30 %	PCB Mount	SMD/SMT	- 20 C	+ 150 C	Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0805 PRF21AR471QB5RA Murata Electronics 1: 0,301 € Non-Stocked 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 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape 0,301 € 0,283 € 0,249 € 0,237 € Reel 0,175 € View 0,212 € 0,182 € 0,169 € 0,166 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 150 C	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF21AS471QB5RA Murata Electronics 4.000: 0,177 € Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. PRF21AS471QB5RA Mouser Part No 81-PRF21AS471QB5RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 0,177 € 0,17 €	Min.: 4.000 Mult.: 4.000 : 4.000	PRF	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 160 C	Reel

PRF PTC Thermistors

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