PTC (Positive Temperature Coefficient) Thermistors

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Automotive PRF PTC Thermistors

Murata Electronics Automotive PRF PTC Thermistors are designed to sense overheating in FETs, power ICs, and other heat-generating areas. Sharp changes in resistance allow these thermistors to accurately detect overheating in multiple areas by using a simple circuit that connects PTC thermistors in the PRF series. Other features include a faster response time, a wide sensing temperature, high reliability, and a compact design that saves board space. Suitable applications for PRF PTC thermistors from Murata include automotive, LED bulbs, mobile phones, power supplies, and motor controllers.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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	Qualification	Packaging
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18AS471QS5RB Murata Electronics 1: $0.33 4,000In Stock	Mfr. Part No. PRF18AS471QS5RB Mouser Part No 81-PRF18AS471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	4,000In Stock	Cut Tape $0.33 $0.279 $0.247 $0.197 Reel $0.12 View $0.163 $0.154 $0.119 $0.117 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC PRF03BA102QB7RL Murata Electronics 1: $0.13 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 $0.13 $0.11 $0.097 $0.081 View Reel $0.051 $0.071 $0.067 $0.06 $0.058 $0.051	Min.: 1 Mult.: 1 : 15,000	PRF	1 kOhms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C		Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 125+/-5degC Curie Point 110degC PRF03BA102QS7RL Murata Electronics 1: $0.16 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 $0.16 $0.133 $0.117 $0.094 View Reel $0.06 $0.083 $0.079 $0.071 $0.067 $0.06	Min.: 1 Mult.: 1 : 15,000	PRF	1 kOhms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C		Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC PRF03BD102QB7RL Murata Electronics 1: $0.13 12,000In 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	12,000In Stock	Cut Tape $0.13 $0.11 $0.097 $0.081 View Reel $0.051 $0.071 $0.067 $0.06 $0.058 $0.051	Min.: 1 Mult.: 1 : 15,000	PRF	1 kOhms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 120 C		Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 0603 1kohm 95+/-5degC Curie Point 80degC PRF03BD102QS7RL Murata Electronics 1: $0.16 11,968In 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	11,968In Stock	Cut Tape $0.16 $0.133 $0.117 $0.094 View Reel $0.06 $0.083 $0.079 $0.071 $0.067 $0.06	Min.: 1 Mult.: 1 : 15,000	PRF	1 kOhms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C		Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC AEC-Q200 PRF03BB102QS7RL Murata Electronics 1: $0.13 13,761In Stock New Product	Mfr. Part No. PRF03BB102QS7RL Mouser Part No 81-PRF03BB102QS7RL New Product	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 115+/-5degC AEC-Q200 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	13,761In Stock	Cut Tape $0.13 $0.116 $0.102 $0.095 View Reel $0.063 $0.084 $0.08 $0.072 $0.067 $0.063	Min.: 1 Mult.: 1 : 15,000	PRF03_S	1 kOhms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC AEC-Q200 PRF03BC102QS7RL Murata Electronics 1: $0.13 14,890In Stock New Product	Mfr. Part No. PRF03BC102QS7RL Mouser Part No 81-PRF03BC102QS7RL New Product	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 0.6x0.3mm 1kohm 105+/-5degC AEC-Q200 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	14,890In Stock	Cut Tape $0.13 $0.116 $0.102 $0.095 View Reel $0.063 $0.084 $0.08 $0.072 $0.067 $0.063	Min.: 1 Mult.: 1 : 15,000	PRF03_S	1 kOhms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BC471QS5RB Murata Electronics 1: $0.461 8,365In Stock	Mfr. Part No. PRF18BC471QS5RB Mouser Part No 81-PRF18BC471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	8,365In Stock	Cut Tape $0.461 $0.429 $0.40 $0.38 View Reel $0.278 $0.362 $0.326 $0.306 $0.278 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BA471QS5RB Murata Electronics 1: $0.24 7,346In Stock	Mfr. Part No. PRF18BA471QS5RB Mouser Part No 81-PRF18BA471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	7,346In Stock	Cut Tape $0.24 $0.219 $0.193 $0.183 Reel $0.136 View $0.163 $0.14 $0.127 $0.117 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF18BB471RS5RB Murata Electronics 1: $0.52 670In Stock	Mfr. Part No. PRF18BB471RS5RB Mouser Part No 81-PRF18BB471RS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	670In Stock	Cut Tape $0.52 $0.394 $0.34 $0.279 View Reel $0.19 $0.247 $0.191 $0.19 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 20 C	+ 140 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BE471QS5RB Murata Electronics 1: $0.24 3,328In Stock 20,000Expected 2026/10/19	Mfr. Part No. PRF18BE471QS5RB Mouser Part No 81-PRF18BE471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	3,328In Stock 20,000Expected 2026/10/19	Cut Tape $0.24 $0.219 $0.193 $0.183 Reel $0.133 View $0.163 $0.14 $0.127 MouseReel Available	Min.: 1 Mult.: 1 Max.: 12,000 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF18BF471RS5RB Murata Electronics 1: $0.52 3,880In Stock	Mfr. Part No. PRF18BF471RS5RB Mouser Part No 81-PRF18BF471RS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	3,880In Stock	$0.52 $0.394 $0.34 $0.279 View $0.247 $0.229 $0.19	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BB471QS5RB Murata Electronics 1: $0.461 5,907In Stock	Mfr. Part No. PRF18BB471QS5RB Mouser Part No 81-PRF18BB471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	5,907In Stock	Cut Tape $0.461 $0.429 $0.40 $0.38 View Reel $0.254 $0.362 $0.326 $0.306 $0.254 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BD471QS5RB Murata Electronics 1: $0.24 12,000On Order	Mfr. Part No. PRF18BD471QS5RB Mouser Part No 81-PRF18BD471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	12,000On Order On Order Ship Dates Mfr. No: PRF18BD471QS5RB Stock: 0 On Order: 4,000 Expected 2026/11/12 8,000 Expected 2026/11/13 Factory Lead Time: 12 Weeks	Cut Tape $0.24 $0.219 $0.193 $0.183 Reel $0.134 View $0.163 $0.14 $0.127 MouseReel Available	Min.: 1 Mult.: 1 Max.: 12,000 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF18BD471RS5RB Murata Electronics 1: $0.52 3,629Expected 2026/12/11	Mfr. Part No. PRF18BD471RS5RB Mouser Part No 81-PRF18BD471RS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	3,629Expected 2026/12/11	$0.52 $0.394 $0.34 $0.279 View $0.247 $0.209 $0.193 $0.191 $0.187	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18BC471RS5RB Murata Electronics 1: $0.52 Non-Stocked Lead-Time 5 Weeks	Mfr. Part No. PRF18BC471RS5RB Mouser Part No 81-PRF18BC471RS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 5 Weeks	$0.52 $0.394 $0.34 $0.279 View $0.247 $0.206 $0.197 $0.195 $0.192	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk
PTC (Positive Temperature Coefficient) Thermistors PRF18BE471RS5RB Murata Electronics 1: $0.52 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. PRF18BE471RS5RB Mouser Part No 81-PRF18BE471RS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 4 Weeks	$0.52 $0.394 $0.34 $0.279 View $0.247 $0.221 $0.204 $0.198 $0.195	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk
PTC (Positive Temperature Coefficient) Thermistors PRF18BF471QS5RB Murata Electronics 1: $0.33 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. PRF18BF471QS5RB Mouser Part No 81-PRF18BF471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 4 Weeks	Cut Tape $0.33 $0.279 $0.247 $0.197 View Reel $0.123 $0.163 $0.124 $0.123 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRF18BG471QS5RB Murata Electronics 1: $0.33 Non-Stocked Lead-Time 10 Weeks	Mfr. Part No. PRF18BG471QS5RB Mouser Part No 81-PRF18BG471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 10 Weeks	$0.33 $0.279 $0.247 $0.197 View $0.163 $0.124 $0.123	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk
PTC (Positive Temperature Coefficient) Thermistors PRF18BG471RS5RB Murata Electronics 1: $0.52 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. PRF18BG471RS5RB Mouser Part No 81-PRF18BG471RS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 7 Weeks	$0.52 $0.394 $0.34 $0.279 View $0.247 $0.215 $0.201 $0.197 $0.194	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 PRF18AR471QS5RB Murata Electronics 1: $0.33 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. PRF18AR471QS5RB Mouser Part No 81-PRF18AR471QS5RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	$0.33 $0.279 $0.247 $0.197 View $0.163 $0.133 $0.127 $0.126 $0.123	Min.: 1 Mult.: 1	PRF18_S	470 Ohms	50 %	PCB Mount	SMD/SMT	- 40 C	+ 150 C	AEC-Q200	Bulk

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