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Thermistors - PTC

PTC Thermistors are available at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many PTC thermistor manufacturers including Murata, Schneider Electric, TDK, Vishay & more. Please view our large selection of PTC thermistors below.

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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 10 OHM 20% SMD 0805 PRG21AR100MS5RA Murata Electronics 1: $0.61 2,099In Stock NRND	Mfr. Part No. PRG21AR100MS5RA Mouser Part No 81-PRG21AR100MS5RA NRND	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 10 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,099In Stock	Cut Tape $0.61 $0.578 $0.54 $0.514 View Reel $0.379 $0.49 $0.442 $0.416 $0.379 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MS5RA	10 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 105 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRG21BC2R2MM1RK Murata Electronics 1: $0.54 1,384In Stock NRND	Mfr. Part No. PRG21BC2R2MM1RK Mouser Part No 81-PRG21BC2R2MM1RK NRND	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	1,384In Stock	Cut Tape $0.54 $0.504 $0.47 $0.447 View Reel $0.323 $0.426 $0.384 $0.365 $0.323 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MM1RK	2.2 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRG21BC4R7MM1RK Murata Electronics 1: $0.54 3,746In Stock NRND	Mfr. Part No. PRG21BC4R7MM1RK Mouser Part No 81-PRG21BC4R7MM1RK NRND	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	3,746In Stock	Cut Tape $0.54 $0.504 $0.47 $0.447 View Reel $0.329 $0.426 $0.384 $0.365 $0.329 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MM1RK								Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRG21BC6R8MM1RK Murata Electronics 1: $0.84 1,045In Stock NRND	Mfr. Part No. PRG21BC6R8MM1RK Mouser Part No 81-PRG21BC6R8MM1RK NRND	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	1,045In Stock	Cut Tape $0.84 $0.644 $0.554 $0.535 View Reel $0.304 $0.456 $0.396 $0.365 $0.304 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MM1RK								Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0805 PRG21BC6R8MM1RA Murata Electronics 1: $0.50 18,291In Stock 16,000Expected 30/11/2026	Mfr. Part No. PRG21BC6R8MM1RA Mouser Part No 81-PRG21BC6R8MM1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	18,291In Stock 16,000Expected 30/11/2026	Cut Tape $0.50 $0.469 $0.437 $0.416 View Reel $0.28 $0.396 $0.357 $0.336 $0.28 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MM1RA	6.8 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors T=5K 120deg C B59008C0120A040 TDK 1: $1.45 2,110In Stock	Mfr. Part No. B59008C0120A040 Mouser Part No 871-B59008C120A40	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 120deg C Learn More about TDK epcos superior ptc thermistors	Datasheet	2,110In Stock	$1.45 $1.39 $1.30 $1.25 View $1.19 $1.09 $1.03 $1.02	Min.: 1 Mult.: 1	B59008	250 Ohms		PCB Mount	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors T=5K 70deg C B59008C0070A040 TDK 1: $1.45 2,385In Stock	Mfr. Part No. B59008C0070A040 Mouser Part No 871-B59008C70A40	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 70deg C Learn More about TDK epcos superior ptc thermistors	Datasheet	2,385In Stock	$1.45 $1.39 $1.30 $1.25 View $1.19 $1.09 $1.03 $1.02	Min.: 1 Mult.: 1	B59008	250 Ohms		PCB Mount	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors D 052-A 60-A 40 NAT 60 Grade C B59052D1060A040 TDK 1: $1.66 5,097In Stock	Mfr. Part No. B59052D1060A040 Mouser Part No 871-B59052D1060A040	TDK	PTC (Positive Temperature Coefficient) Thermistors D 052-A 60-A 40 NAT 60 Grade C	Datasheet	5,097In Stock	$1.66 $1.58 $1.43 $1.38 View $1.29 $1.14 $1.08 $0.934	Min.: 1 Mult.: 1	Heater Element Rectangular shape	570 Ohms		Ring Lug	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors D 052-A 80-A 40 NAT 80 Grade C B59052D1080A040 TDK 1: $1.99 5,247In Stock 800Expected 07/12/2026	Mfr. Part No. B59052D1080A040 Mouser Part No 871-B59052D1080A040	TDK	PTC (Positive Temperature Coefficient) Thermistors D 052-A 80-A 40 NAT 80 Grade C	Datasheet	5,247In Stock 800Expected 07/12/2026	$1.99 $1.66 $1.51 $1.45 View $1.37 $1.35 $1.21 $1.20 $1.11	Min.: 1 Mult.: 1	Ultrasonic Sensor Disc	570 Ohms		Ring Lug	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors D 052-A 100-A 40 NAT 100 Grade C B59052D1100A040 TDK 1: $1.66 2,614In Stock 5,600Expected 27/11/2026	Mfr. Part No. B59052D1100A040 Mouser Part No 871-B59052D1100A040	TDK	PTC (Positive Temperature Coefficient) Thermistors D 052-A 100-A 40 NAT 100 Grade C	Datasheet	2,614In Stock 5,600Expected 27/11/2026	$1.66 $1.58 $1.43 $1.38 View $1.29 $1.14 $1.08	Min.: 1 Mult.: 1	Limit Temperature Sensor Housing style	550 Ohms		Ring Lug	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors D 052-A 120-A 40 NAT 120 Grade C B59052D1120A040 TDK 1: $1.51 1,699In Stock	Mfr. Part No. B59052D1120A040 Mouser Part No 871-B59052D1120A040	TDK	PTC (Positive Temperature Coefficient) Thermistors D 052-A 120-A 40 NAT 120 Grade C	Datasheet	1,699In Stock	$1.51 $1.44 $1.36 $1.30 View $1.24 $1.22 $1.16 $1.03	Min.: 1 Mult.: 1	Limit Temperature Sensor Housing style	550 Ohms		Ring Lug	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors T=5K 60deg C B59100M1060A070 TDK 1: $4.67 3,935In Stock 200Expected 16/11/2026	Mfr. Part No. B59100M1060A070 Mouser Part No 871-B59100M1060A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 60deg C Learn More about TDK epcos ptc thermistors	Datasheet	3,935In Stock 200Expected 16/11/2026	$4.67 $4.19 $4.01 $3.80 Reel $3.18 View $3.65 $3.57 $3.28 $3.16	Min.: 1 Mult.: 1 : 400	Limit Temperature Sensor Leaded style	100 Ohms		Wire	Radial	0 C	+ 40 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors T=5K 70deg C B59100M1070A70 TDK 1: $4.67 806In Stock 1,200Expected 07/12/2026	Mfr. Part No. B59100M1070A70 Mouser Part No 871-B59100M1070A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 70deg C Learn More about TDK epcos ptc thermistors	Datasheet	806In Stock 1,200Expected 07/12/2026	$4.67 $4.19 $4.01 $3.80 View $3.65 $3.57 $3.28 $3.27 $3.11	Min.: 1 Mult.: 1	B59100	100 Ohms		Wire	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors T=5K 80deg C B59100M1080A070 TDK 1: $4.67 4,772In Stock	Mfr. Part No. B59100M1080A070 Mouser Part No 871-B59100M1080A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 80deg C Learn More about TDK epcos ptc thermistors	Datasheet	4,772In Stock	$4.67 $4.19 $4.01 $3.78 Reel $3.24 View $3.61 $3.56 $3.48 $3.19	Min.: 1 Mult.: 1 : 400	Limit Temperature Sensor Leaded style	100 Ohms		Wire	Radial	0 C	+ 40 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors T=5K 90deg C B59100M1090A070 TDK 1: $4.57 1,717In Stock 1,200Expected 07/12/2026	Mfr. Part No. B59100M1090A070 Mouser Part No 871-B59100M1090A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 90deg C Learn More about TDK epcos ptc thermistors	Datasheet	1,717In Stock 1,200Expected 07/12/2026	$4.57 $4.10 $3.92 $3.71 View $3.57 $3.21 $3.10 $3.08	Min.: 1 Mult.: 1	Motor Protector Single Sensor Style	100 Ohms		Wire	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors 120C +/-5C Motor Prot Single Sensor B59100M1120A070 TDK 1: $4.57 1,192In Stock 3,200Expected 30/11/2026	Mfr. Part No. B59100M1120A070 Mouser Part No 871-B59100M1120A070	TDK	PTC (Positive Temperature Coefficient) Thermistors 120C +/-5C Motor Prot Single Sensor Learn More about TDK epcos ptc thermistors	Datasheet	1,192In Stock 3,200Expected 30/11/2026	Cut Tape $4.57 $4.10 $3.92 $3.64 Reel $2.93 View $3.48 $3.43 $3.21 $2.71	Min.: 1 Mult.: 1 : 400	Motor Protector Single Sensor Style	100 Ohms	25 %	Wire	Radial	0 C	+ 40 C		Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors T=5K 130deg C B59100M1130A070 TDK 1: $4.57 2,008In Stock	Mfr. Part No. B59100M1130A070 Mouser Part No 871-B59100M1130A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 130deg C Learn More about TDK epcos ptc thermistors	Datasheet	2,008In Stock	$4.57 $4.10 $3.92 $3.71 Reel $3.17 View $3.57 $3.48 $3.11	Min.: 1 Mult.: 1 : 400	Motor Protector Single Sensor Style	100 Ohms		Wire	Radial	0 C	+ 40 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors T=5K 150deg C B59100M1150A070 TDK 1: $4.57 3,342In Stock	Mfr. Part No. B59100M1150A070 Mouser Part No 871-B59100M1150A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=5K 150deg C Learn More about TDK epcos ptc thermistors	Datasheet	3,342In Stock	$4.57 $4.10 $3.92 $3.64 View $3.48 $3.43 $3.21 $3.11 $3.05	Min.: 1 Mult.: 1	Motor Protector Single Sensor Style	100 Ohms		Wire	Radial	0 C	+ 40 C		Bulk
PTC (Positive Temperature Coefficient) Thermistors T=7K 170deg C B59100M1170A070 TDK 1: $6.10 2,501In Stock	Mfr. Part No. B59100M1170A070 Mouser Part No 871-B59100M1170A70	TDK	PTC (Positive Temperature Coefficient) Thermistors T=7K 170deg C Learn More about TDK epcos ptc thermistors	Datasheet	2,501In Stock	$6.10 $5.49 $5.26 $4.99 Reel $4.19 View $4.80 $4.76 $4.33 $4.13	Min.: 1 Mult.: 1 : 400	Motor Protector Single Sensor Style	100 Ohms		Wire	Radial	0 C	+ 40 C		Ammo Pack
PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor P 1115-A 120-A B59115P1120A62 TDK 1: $2.04 5,598In Stock	Mfr. Part No. B59115P1120A62 Mouser Part No 871-B59115P1120A62	TDK	PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor P 1115-A 120-A Learn More about TDK epcos ptc thermistors	Datasheet	5,598In Stock	Cut Tape $2.04 $1.88 $1.58 $1.47 View Reel $1.01 $1.39 $1.30 $1.20 $1.01 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	B59x15	55 Ohms	25 %	PCB Mount	SMD/SMT	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 204-B 130-A 10 16X3,1 B59204J130B10 TDK 1: $9.10 292In Stock	Mfr. Part No. B59204J130B10 Mouser Part No 871-B59204J130B10	TDK	PTC (Positive Temperature Coefficient) Thermistors PTC Thermistor J 204-B 130-A 10 16X3,1 Learn More about TDK epcos self protecting ptc thermistors		292In Stock	$9.10 $7.56 $6.97 $5.78 View $4.94 $4.93 $3.99	Min.: 1 Mult.: 1	B59204	100 Ohms	25 %			- 40 C	+ 125 C		Tray
PTC (Positive Temperature Coefficient) Thermistors 280Vac, 400Vdc 22ohms AEC-Q200 B59215J0130A020 TDK 1: $5.47 1,273In Stock 4,000Expected 04/01/2027	Mfr. Part No. B59215J0130A020 Mouser Part No 871-B59215J0130A020	TDK	PTC (Positive Temperature Coefficient) Thermistors 280Vac, 400Vdc 22ohms AEC-Q200 Learn More about TDK epcos b592 aec q200 thermistors	Datasheet	1,273In Stock 4,000Expected 04/01/2027	$5.47 $4.68 $3.92 $3.65 View $3.32 $3.22 $2.85 $2.72	Min.: 1 Mult.: 1	Surface Mount OverCurrent PTC	22 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C	AEC-Q200	Case
PTC (Positive Temperature Coefficient) Thermistors 80Vdc 210mA 25ohms PTC Overcurrent B59215P1120A062 TDK 1: $2.04 1,810In Stock 2,000On Order	Mfr. Part No. B59215P1120A062 Mouser Part No 871-B59215P1120A062	TDK	PTC (Positive Temperature Coefficient) Thermistors 80Vdc 210mA 25ohms PTC Overcurrent Learn More about TDK epcos ptc thermistors	Datasheet	1,810In Stock 2,000On Order	Cut Tape $2.04 $1.88 $1.69 $1.49 Reel $1.07 View $1.39 $1.30 $1.20 $1.04 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Inrush Current Limiter Housing Type	25 Ohms	25 %	PCB Mount	SMD/SMT	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 440 V AC, AEC-Q200 AEC-Q200 B59217J0130A020 TDK 1: $5.60 2,810In Stock	Mfr. Part No. B59217J0130A020 Mouser Part No 871-B59217J0130A020	TDK	PTC (Positive Temperature Coefficient) Thermistors 440 V AC, AEC-Q200 AEC-Q200 Learn More about TDK epcos b592 aec q200 thermistors	Datasheet	2,810In Stock	$5.60 $4.65 $4.29 $4.06 View $3.56 $3.29 $2.95 $2.79	Min.: 1 Mult.: 1	Inrush Current Limiter Housing Type	56 Ohms	25 %	PCB Mount	Radial	- 40 C	+ 125 C	AEC-Q200	Case
PTC (Positive Temperature Coefficient) Thermistors 780V 500ohm J 252-A 140-B 20 AEC-Q200 B59252J0140B020 TDK 1: $4.49 2,430In Stock	Mfr. Part No. B59252J0140B020 Mouser Part No 871-B59252J0140B020	TDK	PTC (Positive Temperature Coefficient) Thermistors 780V 500ohm J 252-A 140-B 20 AEC-Q200 Learn More about TDK epcos b592 aec q200 thermistors	Datasheet	2,430In Stock	$4.49 $4.03 $3.86 $3.65 View $3.51 $3.38 $3.05 $2.92	Min.: 1 Mult.: 1	Surface Mount OverCurrent PTC	500 Ohms	30 %	PCB Mount	Radial	- 40 C	+ 85 C	AEC-Q200	Case