PTC Thermistors – Mouser Canada

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PRG Series PTC Thermistors

Murata Electronics PRG Series PTC Thermistors are posistors for overcurrent protection that offer a voltage rating up to 32V and a current range of 10mA to 75mA. These thermistors feature a compact design, low profile, and a wide operating temperature range of -20°C to +85°C. PRG thermistors automatically return to their initial state when the overcurrent is eliminated and can be used repeatedly. Murata Electronics PRG Series PTC Thermistors are suitable for various types of equipment, including aircraft, aerospace, disaster, medical, crime prevention, and transportation.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) 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 Thermistors 15 OHM 20% SMD 0805 PRG21BB150MB1RK Murata Electronics 1: $0.821 9,094In Stock	Mfr. Part # PRG21BB150MB1RK Mouser Part # 81-PRG21BB150MB1RK	Murata Electronics	PTC Thermistors 15 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	9,094In Stock	Cut Tape $0.821 $0.749 $0.622 $0.602 View Reel $0.373 $0.569 $0.516 $0.49 $0.459 $0.373 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 Thermistors 0.2 OHM 20% SMD 0805 PRG21BC0R2MM1RA Murata Electronics 1: $1.08 8,124In Stock	Mfr. Part # PRG21BC0R2MM1RA Mouser Part # 81-PRG21BC0R2MM1RA	Murata Electronics	PTC Thermistors 0.2 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	8,124In Stock	Cut Tape $1.08 $0.988 $0.821 $0.786 View Reel $0.451 $0.757 $0.681 $0.645 $0.511 $0.451 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 Thermistors PRG21BC1R0MM1RK Murata Electronics 1: $0.749 25,041In Stock	Mfr. Part # PRG21BC1R0MM1RK Mouser Part # 81-PRG21BC1R0MM1RK	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	25,041In Stock	Cut Tape $0.749 $0.703 $0.655 $0.624 View Reel $0.40 $0.595 $0.527 $0.477 $0.40 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 Thermistors 0.6 OHM 20% SMD 0805 PRG21BC0R6MM1RA Murata Electronics 1: $0.936 3,820In Stock	Mfr. Part # PRG21BC0R6MM1RA Mouser Part # 81-PRG21BC0R6MM1RA	Murata Electronics	PTC Thermistors 0.6 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	3,820In Stock	Cut Tape $0.936 $0.864 $0.816 $0.717 View Reel $0.484 $0.662 $0.595 $0.549 $0.507 $0.484 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 Thermistors 100 OHM 20% SMD 0603 PRG18BB101MB1RB Murata Electronics 1: $0.374 37,117In Stock 32,000Expected 2026-12-03	Mfr. Part # PRG18BB101MB1RB Mouser Part # 81-PRG18BB101MB1RB	Murata Electronics	PTC Thermistors 100 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	37,117In Stock 32,000Expected 2026-12-03	Cut Tape $0.374 $0.337 $0.279 $0.233 Reel $0.15 View $0.219 $0.164 $0.135 $0.13 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 Thermistors 220 OHM 20% SMD 0603 PRG18BB221MB1RB Murata Electronics 1: $0.403 24,679In Stock 96,000On Order	Mfr. Part # PRG18BB221MB1RB Mouser Part # 81-PRG18BB221MB1RB	Murata Electronics	PTC Thermistors 220 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	24,679In Stock 96,000On Order On Order Ship Dates Mfr. #: PRG18BB221MB1RB Stock: 24,679 Can Ship Immediately On Order: 36,000 Expected 2026-12-03 60,000 Expected 2026-12-24 Factory Lead-Time: 12 Weeks	Cut Tape $0.403 $0.354 $0.287 $0.265 Reel $0.177 View $0.219 $0.193 $0.158 $0.151 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 Thermistors 33 OHM 20% SMD 0603 PRG18BB330MB1RB Murata Electronics 1: $0.36 142,709In Stock	Mfr. Part # PRG18BB330MB1RB Mouser Part # 81-PRG18BB330MB1RB	Murata Electronics	PTC Thermistors 33 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	142,709In Stock	Cut Tape $0.36 $0.331 $0.275 $0.229 Reel $0.147 View $0.217 $0.161 $0.132 $0.128 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 Thermistors 0603 47ohm 20% SMD PRG18BB470MB1RB Murata Electronics 1: $0.533 53,406In Stock 44,000Expected 2026-11-26	Mfr. Part # PRG18BB470MB1RB Mouser Part # 81-PRG18BB470MB1RB	Murata Electronics	PTC Thermistors 0603 47ohm 20% SMD Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	53,406In Stock 44,000Expected 2026-11-26	Cut Tape $0.533 $0.472 $0.396 $0.328 Reel $0.229 View $0.31 $0.271 $0.203 $0.202 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 Thermistors 470 OHM 20% SMD 0603 PRG18BB471MB1RB Murata Electronics 1: $0.36 37,251In Stock 24,000Expected 2026-11-20	Mfr. Part # PRG18BB471MB1RB Mouser Part # 81-PRG18BB471MB1RB	Murata Electronics	PTC Thermistors 470 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	37,251In Stock 24,000Expected 2026-11-20	Cut Tape $0.36 $0.331 $0.275 $0.229 Reel $0.156 View $0.219 $0.171 $0.14 $0.134 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 Thermistors PRG18BC220MM1RB Murata Electronics 1: $0.49 10,329In Stock	Mfr. Part # PRG18BC220MM1RB Mouser Part # 81-PRG18BC220MM1RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	10,329In Stock	Cut Tape $0.49 $0.454 $0.402 $0.382 View Reel $0.284 $0.338 $0.295 $0.284 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 Thermistors 22 OHM 20% SMD 0805 PRG21BB220MB1RK Murata Electronics 1: $0.864 6,000In Stock 15,000On Order	Mfr. Part # PRG21BB220MB1RK Mouser Part # 81-PRG21BB220MB1RK	Murata Electronics	PTC Thermistors 22 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	6,000In Stock 15,000On Order On Order Ship Dates Mfr. #: PRG21BB220MB1RK Stock: 6,000 Can Ship Immediately On Order: 6,000 Expected 2026-12-08 9,000 Expected 2026-12-11 Factory Lead-Time: 12 Weeks	Cut Tape $0.864 $0.789 $0.736 $0.655 View Reel $0.395 $0.585 $0.543 $0.495 $0.459 $0.395 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 Thermistors 4.7 OHM 20% SMD 0805 PRG21BC4R7MM1RA Murata Electronics 1: $0.72 8,226In Stock	Mfr. Part # PRG21BC4R7MM1RA Mouser Part # 81-PRG21BC4R7MM1RA	Murata Electronics	PTC Thermistors 4.7 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	8,226In Stock	Cut Tape $0.72 $0.677 $0.631 $0.60 View Reel $0.436 $0.572 $0.516 $0.485 $0.436 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 Thermistors 6.8 OHM 20% SMD 0805 PRG21BC6R8MM1RA Murata Electronics 1: $0.72 18,291In Stock 16,000Expected 2026-11-30	Mfr. Part # PRG21BC6R8MM1RA Mouser Part # 81-PRG21BC6R8MM1RA	Murata Electronics	PTC Thermistors 6.8 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	18,291In Stock 16,000Expected 2026-11-30	Cut Tape $0.72 $0.675 $0.629 $0.599 View Reel $0.403 $0.57 $0.514 $0.484 $0.403 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 Thermistors 100 OHM 20% SMD 0603 PRG18BB101MS1RB Murata Electronics 1: $0.72 2,638In Stock	Mfr. Part # PRG18BB101MS1RB Mouser Part # 81-PRG18BB101MS1RB	Murata Electronics	PTC Thermistors 100 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,638In Stock	Cut Tape $0.72 $0.664 $0.635 $0.552 View Reel $0.351 $0.503 $0.458 $0.422 $0.405 $0.351 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 Thermistors 33 OHM 20% SMD 0603 PRG18BB330MS1RB Murata Electronics 1: $0.72 1,345In Stock 4,000Expected 2026-12-04	Mfr. Part # PRG18BB330MS1RB Mouser Part # 81-PRG18BB330MS1RB	Murata Electronics	PTC 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 $0.72 $0.664 $0.635 $0.552 View Reel $0.32 $0.503 $0.458 $0.422 $0.389 $0.32 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 Thermistors 22 OHM 20% SMD 0805 PRG21AR220MS1RK Murata Electronics 1: $0.864 2,632In Stock 12,000Expected 2026-12-11	Mfr. Part # PRG21AR220MS1RK Mouser Part # 81-PRG21AR220MS1RK	Murata Electronics	PTC 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 $0.864 $0.71 $0.678 $0.59 View Reel $0.351 $0.518 $0.503 $0.436 $0.405 $0.351 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 Thermistors 42 OHM 20% SMD 0805 PRG21AR420MB1RA Murata Electronics 1: $0.806 3,656In Stock	Mfr. Part # PRG21AR420MB1RA Mouser Part # 81-PRG21AR420MB1RA	Murata Electronics	PTC Thermistors 42 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	3,656In Stock	Cut Tape $0.806 $0.729 $0.672 $0.612 View Reel $0.432 $0.546 $0.513 $0.464 $0.436 $0.432 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 Thermistors 42 OHM 20% SMD 0805 PRG21AR420MS1RA Murata Electronics 1: $0.72 817In Stock	Mfr. Part # PRG21AR420MS1RA Mouser Part # 81-PRG21AR420MS1RA	Murata Electronics	PTC Thermistors 42 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	817In Stock	Cut Tape $0.72 $0.664 $0.635 $0.552 View Reel $0.35 $0.503 $0.458 $0.422 $0.389 $0.35 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 Thermistors 1 OHM 20% SMD 0805 PRG21BC1R0MM1RA Murata Electronics 1: $0.878 4,484In Stock	Mfr. Part # PRG21BC1R0MM1RA Mouser Part # 81-PRG21BC1R0MM1RA	Murata Electronics	PTC Thermistors 1 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	4,484In Stock	Cut Tape $0.878 $0.804 $0.755 $0.667 View Reel $0.446 $0.595 $0.553 $0.51 $0.468 $0.446 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 Thermistors 2.2 OHM 20% SMD 0805 PRG21BC2R2MM1RA Murata Electronics 1: $0.864 4,445In Stock 8,000Expected 2026-11-11	Mfr. Part # PRG21BC2R2MM1RA Mouser Part # 81-PRG21BC2R2MM1RA	Murata Electronics	PTC Thermistors 2.2 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	4,445In Stock 8,000Expected 2026-11-11	Cut Tape $0.864 $0.788 $0.739 $0.655 View Reel $0.438 $0.605 $0.543 $0.501 $0.462 $0.438 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 Thermistors PRG21BC3R3MM1RA Murata Electronics 1: $0.907 2,071In Stock 4,000Expected 2027-01-12	Mfr. Part # PRG21BC3R3MM1RA Mouser Part # 81-PRG21BC3R3MM1RA	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,071In Stock 4,000Expected 2027-01-12	Cut Tape $0.907 $0.835 $0.808 $0.693 View Reel $0.467 $0.639 $0.575 $0.53 $0.49 $0.467 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 Thermistors PRG21AR220MS5RA Murata Electronics 1: $1.43 4,000Expected 2026-11-30	Mfr. Part # PRG21AR220MS5RA Mouser Part # 81-PRG21AR220MS5RA	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	4,000Expected 2026-11-30	Cut Tape $1.43 $1.08 $0.933 $0.901 View Reel $0.498 $0.768 $0.667 $0.589 $0.498	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 Thermistors PRG18BB221MS1RB Murata Electronics 4,000: $0.353 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # PRG18BB221MS1RB Mouser Part # 81-PRG18BB221MS1RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel $0.353	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 Thermistors PRG18BB470MS1RB Murata Electronics 4,000: $0.336 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # PRG18BB470MS1RB Mouser Part # 81-PRG18BB470MS1RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	$0.336	Min.: 4,000 Mult.: 4,000	PRG18-MS1RB	47 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Bulk
PTC Thermistors PRG18BB471MS1RB Murata Electronics 4,000: $0.336 Non-Stocked Lead-Time 12 Weeks	Mfr. Part # PRG18BB471MS1RB Mouser Part # 81-PRG18BB471MS1RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel $0.336	Min.: 4,000 Mult.: 4,000 : 4,000	PRG18-MS1RB	470 Ohms	20 %	PCB Mount	SMD/SMT	- 40 C	+ 75 C	AEC-Q100	Reel

PRG Series PTC Thermistors

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