PTC (Positive Temperature Coefficient) Thermistors

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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 PRG21BC1R0MM1RK Murata Electronics 1: $0.52 25,041In Stock	Mfr. Part No. PRG21BC1R0MM1RK Mouser Part No 81-PRG21BC1R0MM1RK	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	25,041In Stock	Cut Tape $0.52 $0.488 $0.455 $0.433 View Reel $0.278 $0.413 $0.366 $0.331 $0.278 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MM1RK	1 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 15 OHM 20% SMD 0805 PRG21BB150MB1RK Murata Electronics 1: $0.57 10,074In 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	10,074In Stock	Cut Tape $0.57 $0.52 $0.433 $0.418 View Reel $0.259 $0.395 $0.358 $0.34 $0.319 $0.259 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MB1RK	15 Ohms	20 %	PCB Mount	SMD/SMT	- 10 C	+ 60 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 0.2 OHM 20% SMD 0805 PRG21BC0R2MM1RA Murata Electronics 1: $0.75 8,126In 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	8,126In Stock	Cut Tape $0.75 $0.686 $0.57 $0.547 View Reel $0.313 $0.526 $0.473 $0.448 $0.355 $0.313 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MM1RA	200 mOhms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603 PRG18BB330MB1RB Murata Electronics 1: $0.25 145,329In 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	145,329In Stock	Cut Tape $0.25 $0.23 $0.191 $0.159 Reel $0.104 View $0.149 $0.112 $0.092 $0.091 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MB1RB	33 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 75 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603 PRG18BB101MB1RB Murata Electronics 1: $0.261 37,701In Stock 32,000Expected 2026/12/03	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	37,701In Stock 32,000Expected 2026/12/03	Cut Tape $0.261 $0.234 $0.194 $0.162 Reel $0.106 View $0.152 $0.114 $0.095 $0.093 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MB1RB	100 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 75 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 0603 47ohm 20% SMD PRG18BB470MB1RB Murata Electronics 1: $0.39 54,756In Stock 44,000Expected 2026/11/26	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	54,756In Stock 44,000Expected 2026/11/26	Cut Tape $0.39 $0.34 $0.287 $0.238 Reel $0.156 View $0.219 $0.171 $0.145 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MB1RB	47 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 75 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRG18BC220MM1RB Murata Electronics 1: $0.34 11,419In Stock	Mfr. Part No. PRG18BC220MM1RB Mouser Part No 81-PRG18BC220MM1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	11,419In Stock	Cut Tape $0.34 $0.315 $0.279 $0.265 View Reel $0.204 $0.235 $0.226 $0.204 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,000 : 4,000	PRG18-MM1RB	22 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 6.8 OHM 20% SMD 0805 PRG21BC6R8MM1RA Murata Electronics 1: $0.50 18,297In Stock 16,000Expected 2026/11/23	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	18,297In Stock 16,000Expected 2026/11/23	Cut Tape $0.50 $0.469 $0.437 $0.416 View Reel $0.285 $0.397 $0.357 $0.336 $0.285 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 100 OHM 20% SMD 0603 PRG18BB101MS1RB Murata Electronics 1: $0.50 2,638In Stock	Mfr. Part No. PRG18BB101MS1RB Mouser Part No 81-PRG18BB101MS1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 100 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,638In Stock	Cut Tape $0.50 $0.461 $0.441 $0.383 View Reel $0.242 $0.349 $0.317 $0.293 $0.281 $0.242 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MS1RB	100 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603 PRG18BB330MS1RB Murata Electronics 1: $0.50 1,345In Stock 4,000Expected 2026/12/04	Mfr. Part No. PRG18BB330MS1RB Mouser Part No 81-PRG18BB330MS1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 33 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	1,345In Stock 4,000Expected 2026/12/04	Cut Tape $0.50 $0.461 $0.441 $0.383 View Reel $0.222 $0.349 $0.317 $0.293 $0.27 $0.222 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MS1RB	33 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 470 OHM 20% SMD 0603 PRG18BB471MB1RB Murata Electronics 1: $0.25 39,858In Stock 24,000Expected 2026/11/16	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	39,858In Stock 24,000Expected 2026/11/16	Cut Tape $0.25 $0.23 $0.191 $0.159 Reel $0.108 View $0.152 $0.119 $0.098 $0.094 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MB1RB	470 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 75 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805 PRG21AR220MS1RK Murata Electronics 1: $0.60 2,632In Stock 12,000Expected 2026/12/11	Mfr. Part No. PRG21AR220MS1RK Mouser Part No 81-PRG21AR220MS1RK	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,632In Stock 12,000Expected 2026/12/11	Cut Tape $0.60 $0.493 $0.471 $0.411 View Reel $0.272 $0.361 $0.349 $0.304 $0.281 $0.272 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MS1RK	22 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 105 C	AEC-Q100	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805 PRG21AR420MS1RA Murata Electronics 1: $0.50 1,142In Stock	Mfr. Part No. PRG21AR420MS1RA Mouser Part No 81-PRG21AR420MS1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	1,142In Stock	Cut Tape $0.50 $0.461 $0.441 $0.383 View Reel $0.243 $0.349 $0.317 $0.293 $0.27 $0.243 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MS1RA	42 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 105 C	AEC-Q100	Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 0.6 OHM 20% SMD 0805 PRG21BC0R6MM1RA Murata Electronics 1: $0.65 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 $0.65 $0.60 $0.583 $0.498 View Reel $0.336 $0.461 $0.413 $0.381 $0.352 $0.336 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MM1RA	600 mOhms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 2.2 OHM 20% SMD 0805 PRG21BC2R2MM1RA Murata Electronics 1: $0.60 4,458In Stock 8,000Expected 2026/11/05	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	4,458In Stock 8,000Expected 2026/11/05	Cut Tape $0.60 $0.547 $0.513 $0.455 View Reel $0.304 $0.42 $0.377 $0.348 $0.321 $0.304 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MM1RA	2.2 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRG21BC3R3MM1RA Murata Electronics 1: $0.63 2,438In Stock	Mfr. Part No. PRG21BC3R3MM1RA Mouser Part No 81-PRG21BC3R3MM1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,438In Stock	Cut Tape $0.63 $0.58 $0.561 $0.481 View Reel $0.324 $0.444 $0.399 $0.368 $0.34 $0.324 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MM1RA	3.3 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805 PRG21AR420MB1RA Murata Electronics 1: $0.561 3,696In Stock	Mfr. Part No. PRG21AR420MB1RA Mouser Part No 81-PRG21AR420MB1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 42 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	3,696In Stock	Cut Tape $0.561 $0.506 $0.468 $0.426 View Reel $0.30 $0.379 $0.356 $0.322 $0.304 $0.30 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MB1RA	42 Ohms	20 %	PCB Mount	SMD/SMT	- 10 C	+ 60 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 1 OHM 20% SMD 0805 PRG21BC1R0MM1RA Murata Electronics 1: $0.611 4,749In Stock	Mfr. Part No. PRG21BC1R0MM1RA Mouser Part No 81-PRG21BC1R0MM1RA	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors 1 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	4,749In Stock	Cut Tape $0.611 $0.558 $0.525 $0.463 View Reel $0.311 $0.424 $0.384 $0.355 $0.327 $0.311 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,000 : 4,000	PRG21-MM1RA	1 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 4.7 OHM 20% SMD 0805 PRG21BC4R7MM1RA Murata Electronics 1: $0.50 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 $0.50 $0.47 $0.438 $0.418 View Reel $0.304 $0.397 $0.358 $0.337 $0.304 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG21-MM1RA	4.7 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 85 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 220 OHM 20% SMD 0603 PRG18BB221MB1RB Murata Electronics 1: $0.27 130,400On 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	130,400On Order On Order Ship Dates Mfr. No: PRG18BB221MB1RB Stock: 0 On Order: 34,400 Expected 2026/10/14 36,000 Expected 2026/12/03 60,000 Expected 2026/12/24 Factory Lead Time: 12 Weeks	Cut Tape $0.27 $0.244 $0.20 $0.167 Reel $0.102 View $0.152 $0.112 $0.094 $0.092 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PRG18-MB1RB	220 Ohms	20 %	PCB Mount	SMD/SMT	- 20 C	+ 75 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors 22 OHM 20% SMD 0805 PRG21BB220MB1RK Murata Electronics 1: $0.561 21,000On 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	21,000On Order On Order Ship Dates Mfr. No: PRG21BB220MB1RK Stock: 0 On Order: 6,000 Pending 6,000 Expected 2026/12/08 9,000 Expected 2026/12/11 Factory Lead Time: 13 Weeks	Cut Tape $0.561 $0.518 $0.495 $0.429 View Reel $0.258 $0.395 $0.356 $0.328 $0.304 $0.258 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PRG21-MB1RK	22 Ohms	20 %	PCB Mount	SMD/SMT	- 10 C	+ 60 C		Reel, Cut Tape, MouseReel
PTC (Positive Temperature Coefficient) Thermistors PRG21AR220MS5RA Murata Electronics 1: $0.99 4,000Expected 2026/11/23	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	4,000Expected 2026/11/23	Cut Tape $0.99 $0.752 $0.648 $0.626 View Reel $0.347 $0.533 $0.463 $0.409 $0.347	Min.: 1 Mult.: 1 Max.: 12,000 : 4,000	PRG21-MS5RA	22 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 105 C		Reel, Cut Tape
PTC (Positive Temperature Coefficient) Thermistors PRG18BB221MS1RB Murata Electronics 4,000: $0.247 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. PRG18BB221MS1RB Mouser Part No 81-PRG18BB221MS1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 8 Weeks	Reel $0.247	Min.: 4,000 Mult.: 4,000 : 4,000	PRG18-MS1RB	220 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Reel
PTC (Positive Temperature Coefficient) Thermistors PRG18BB470MS1RB Murata Electronics 4,000: $0.233 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. PRG18BB470MS1RB Mouser Part No 81-PRG18BB470MS1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 4 Weeks	$0.233	Min.: 4,000 Mult.: 4,000	PRG18-MS1RB	47 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Bulk
PTC (Positive Temperature Coefficient) Thermistors PRG18BB471MS1RB Murata Electronics 4,000: $0.233 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. PRG18BB471MS1RB Mouser Part No 81-PRG18BB471MS1RB	Murata Electronics	PTC (Positive Temperature Coefficient) Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 4 Weeks	Reel $0.233	Min.: 4,000 Mult.: 4,000 : 4,000	PRG18-MS1RB	470 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Reel

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