Thermistors – Mouser Japan

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Automotive Circuit Protection / Thermistors

Murata Electronics Automotive Circuit Protection and Thermistors include a wide lineup of characteristics for various electronic devices, including smartphones and wearable terminals, and automobile/automotive devices. Heat is generated by applied voltage and current, and the resistance changes along with the temperature. Murata thermistors function as a heating element and thermo-sensitive device and play an active role in various applications, such as temperature sensors, circuit protection, and temperature compensation.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Resistance	Mounting Style	Termination Style	Package / Case
PTC Thermistors PRF18BF471RS5RB Murata Electronics 1: ¥86.4 3,880In Stock	Mfr. Part # PRF18BF471RS5RB Mouser Part # 81-PRF18BF471RS5RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	3,880In Stock	¥86.4 ¥65.4 ¥56.5 ¥46.3 View ¥40.9 ¥39.2 ¥33.4 ¥32.6 ¥31.9	Min.: 1 Mult.: 1	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0805 PRF21BA471QB5RA Murata Electronics 1: ¥58.1 1,271In Stock 4,000Expected 12/15/2026	Mfr. Part # PRF21BA471QB5RA Mouser Part # 81-PRF21BA471QB5RA	Murata Electronics	PTC 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 ¥58.1 ¥54.6 ¥48.2 ¥45.8 Reel ¥35.4 View ¥40.9 ¥37.7 ¥34.1 ¥31.9 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 470 OHM 50% SMD 0805 PRF21BB471QB5RA Murata Electronics 1: ¥58.1 1,430In Stock	Mfr. Part # PRF21BB471QB5RA Mouser Part # 81-PRF21BB471QB5RA	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0805 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	1,430In Stock	Cut Tape ¥58.1 ¥54.6 ¥48.2 ¥45.8 Reel ¥31.2 View ¥40.9 ¥39.2 ¥30.6 ¥30.1 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 470 OHM 50% SMD 0805 PRF21BC471QB5RA Murata Electronics 1: ¥76.4 4,860In Stock	Mfr. Part # PRF21BC471QB5RA Mouser Part # 81-PRF21BC471QB5RA	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0805 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	4,860In Stock	Cut Tape ¥76.4 ¥65.4 ¥56.5 ¥46.3 Reel ¥35.4 View ¥40.9 ¥35.5 ¥31.4 ¥31.1 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors PRF21BD471QB5RA Murata Electronics 1: ¥74.7 318In Stock 4,000Expected 1/8/2027	Mfr. Part # PRF21BD471QB5RA Mouser Part # 81-PRF21BD471QB5RA	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	318In Stock 4,000Expected 1/8/2027	Cut Tape ¥74.7 ¥61.8 ¥53.8 ¥47.5 Reel ¥31.1 View ¥42.2 ¥33.9 ¥29.9 ¥29.1 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 100 OHM 20% SMD 0603 PRG18BB101MS1RB Murata Electronics 1: ¥83.1 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 ¥83.1 ¥76.6 ¥73.3 ¥63.6 View Reel ¥40.5 ¥58 ¥52.8 ¥48.7 ¥46.7 ¥40.5 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	100 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 220 OHM 20% SMD 0603 PRG18BB221MB1RB Murata Electronics 1: ¥46.5 6,479In 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	6,479In Stock 96,000On Order On Order Ship Dates Mfr. #: PRG18BB221MB1RB Stock: 6,479 Can Ship Immediately On Order: 36,000 Expected 12/3/2026 60,000 Expected 12/24/2026 Factory Lead-Time: 12 Weeks	Cut Tape ¥46.5 ¥40.9 ¥33.1 ¥30.6 Reel ¥20.4 View ¥25.2 ¥22.3 ¥18.3 ¥17.4 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	220 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 33 OHM 20% SMD 0603 PRG18BB330MS1RB Murata Electronics 1: ¥83.1 1,345In Stock 4,000Expected 12/4/2026	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 12/4/2026	Cut Tape ¥83.1 ¥76.6 ¥73.3 ¥63.6 View Reel ¥36.9 ¥58 ¥52.8 ¥48.7 ¥44.8 ¥36.9 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	33 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 22 OHM 20% SMD 0805 PRG21AR220MS1RK Murata Electronics 1: ¥99.7 2,632In Stock 12,000Expected 12/11/2026	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 12/11/2026	Cut Tape ¥99.7 ¥81.9 ¥78.2 ¥68.1 View Reel ¥40.5 ¥59.8 ¥58 ¥50.3 ¥46.7 ¥40.5 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PTC Thermistors	22 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 42 OHM 20% SMD 0805 PRG21AR420MB1RA Murata Electronics 1: ¥93 2,656In Stock 4,000Expected 1/28/2027	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	2,656In Stock 4,000Expected 1/28/2027	Cut Tape ¥93 ¥84 ¥77.6 ¥70.6 View Reel ¥49.8 ¥63 ¥59.1 ¥53.5 ¥50.3 ¥49.8 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	42 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 42 OHM 20% SMD 0805 PRG21AR420MS1RA Murata Electronics 1: ¥83.1 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 ¥83.1 ¥76.6 ¥73.3 ¥63.6 View Reel ¥40.4 ¥58 ¥52.8 ¥48.7 ¥44.8 ¥40.4 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	42 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 1 OHM 20% SMD 0805 PRG21BC1R0MM1RA Murata Electronics 1: ¥101.3 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 ¥101.3 ¥92.7 ¥89.5 ¥76.9 View Reel ¥51.5 ¥68.6 ¥63.8 ¥58.8 ¥54 ¥51.5 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,000 : 4,000	PTC Thermistors	1 Ohms	PCB Mount	SMD/SMT
PTC Thermistors PRG21BC3R3MM1RA Murata Electronics 1: ¥104.6 2,071In Stock 4,000Expected 1/22/2027	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 1/22/2027	Cut Tape ¥104.6 ¥96.3 ¥93.2 ¥79.9 View Reel ¥53.8 ¥73.7 ¥66.3 ¥61.1 ¥56.5 ¥53.8 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	3.3 Ohms	PCB Mount	SMD/SMT
PTC Thermistors PRG15BC680MM1RC Murata Electronics 1: ¥28.2 9,680In Stock NRND	Mfr. Part # PRG15BC680MM1RC Mouser Part # 81-PRG15BC680MM1RC NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	9,680In Stock	Cut Tape ¥28.2 ¥25.9 ¥22.8 ¥21.4 Reel ¥14.8 View ¥18.8 ¥17.9 ¥16.1 ¥13.8 MouseReel Available	Min.: 1 Mult.: 1 : 10,000	PTC Thermistors	68 Ohms	PCB Mount	SMD/SMT	0402 (1005 metric)
PTC Thermistors PRG18BC100MM1RB Murata Electronics 1: ¥64.8 2,835In Stock NRND	Mfr. Part # PRG18BC100MM1RB Mouser Part # 81-PRG18BC100MM1RB NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,835In Stock	Cut Tape ¥64.8 ¥58.5 ¥48.7 ¥40.4 Reel ¥25.9 View ¥37.2 ¥28.4 ¥23.3 ¥23.1 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	10 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 4.7 OHM 20% SMD 0805 PRG18BC4R7MM1RB Murata Electronics 1: ¥64.8 6,264In Stock NRND	Mfr. Part # PRG18BC4R7MM1RB Mouser Part # 81-PRG18BC4R7MM1RB NRND	Murata Electronics	PTC Thermistors 4.7 OHM 20% SMD 0805 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	6,264In Stock	Cut Tape ¥64.8 ¥59.5 ¥49.5 ¥41 Reel ¥29.7 View ¥37.9 ¥32.4 ¥28.7 ¥27.9 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	4.7 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors PRG21BC0R4MM1RK Murata Electronics 1: ¥137.9 370In Stock NRND	Mfr. Part # PRG21BC0R4MM1RK Mouser Part # 81-PRG21BC0R4MM1RK NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	370In Stock	Cut Tape ¥137.9 ¥105 ¥90.4 ¥87.2 View Reel ¥49.7 ¥74.2 ¥64.6 ¥59.6 ¥49.7 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PTC Thermistors	400 mOhms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors PRG21BC3R3MM1RK Murata Electronics 1: ¥139.5 1,553In Stock NRND	Mfr. Part # PRG21BC3R3MM1RK Mouser Part # 81-PRG21BC3R3MM1RK NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	1,553In Stock	Cut Tape ¥139.5 ¥107 ¥92 ¥88.9 View Reel ¥50.5 ¥75.7 ¥65.8 ¥60.6 ¥50.5 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PTC Thermistors	3.3 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
NTC Thermistors 47K OHM 1% NCU18WB473F6SRB Murata Electronics 1: ¥26.6 1,244In Stock 44,000On Order	Mfr. Part # NCU18WB473F6SRB Mouser Part # 81-NCU18WB473F6SRB	Murata Electronics	NTC Thermistors 47K OHM 1% Learn More about Murata Electronics murata ncu auto thermistors	Datasheet	1,244In Stock 44,000On Order On Order Ship Dates Mfr. #: NCU18WB473F6SRB Stock: 1,244 Can Ship Immediately On Order: 12,000 Expected 11/25/2026 12,000 Expected 1/25/2027 20,000 Expected 1/28/2027 Factory Lead-Time: 22 Weeks	Cut Tape ¥26.6 ¥24.3 ¥21.3 ¥20.1 Reel ¥14.5 View ¥17.8 ¥15.3 ¥13.8 ¥13.5 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	NTC Thermistors	47 kOhms	PCB Mount	SMD/SMT	0603 (1608 metric)
NTC Thermistors 47K OHM 1608 SMD 0.5 NCU18WB473J6SRB Murata Electronics 1: ¥21.6 869In Stock 4,000Expected 1/14/2027	Mfr. Part # NCU18WB473J6SRB Mouser Part # 81-NCU18WB473J6SRB	Murata Electronics	NTC Thermistors 47K OHM 1608 SMD 0.5 Learn More about Murata Electronics murata ncu auto thermistors	Datasheet	869In Stock 4,000Expected 1/14/2027	Cut Tape ¥21.6 ¥18.9 ¥16.4 ¥15.3 Reel ¥11.1 View ¥13.5 ¥11.8 ¥10.5 ¥10.3 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	NTC Thermistors	47 kOhms	PCB Mount	SMD/SMT	0603 (1608 metric)
NTC Thermistors 100K OHM 1608 SMD .5% NCU18WF104D6SRB Murata Electronics 1: ¥71.4 1,449In Stock 12,000Expected 12/22/2026	Mfr. Part # NCU18WF104D6SRB Mouser Part # 81-NCU18WF104D6SRB	Murata Electronics	NTC Thermistors 100K OHM 1608 SMD .5% Learn More about Murata Electronics murata ncu auto thermistors	Datasheet	1,449In Stock 12,000Expected 12/22/2026	Cut Tape ¥71.4 ¥66.3 ¥61.8 ¥58.6 View Reel ¥42.5 ¥55.8 ¥50.2 ¥47.3 ¥42.5 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	NTC Thermistors	100 kOhms	PCB Mount	SMD/SMT	0603 (1608 metric)
NTC Thermistors 10K OHM 3% NCU18XH103E6SRB Murata Electronics 1: ¥23.3 2,273In Stock 16,000Expected 1/28/2027	Mfr. Part # NCU18XH103E6SRB Mouser Part # 81-NCU18XH103E6SRB	Murata Electronics	NTC Thermistors 10K OHM 3% Learn More about Murata Electronics murata ncu auto thermistors	Datasheet	2,273In Stock 16,000Expected 1/28/2027	Cut Tape ¥23.3 ¥21.3 ¥18.6 ¥17.4 Reel ¥12.1 View ¥15.3 ¥12.8 ¥12 ¥11.6	Min.: 1 Mult.: 1 : 4,000	NTC Thermistors	10 kOhms	PCB Mount	SMD/SMT	0603 (1608 metric)
NTC Thermistors 10K OHM 1608 SMD 5% NCU18XH103J6SRB Murata Electronics 1: ¥18.3 4,674In Stock 8,000Expected 1/14/2027	Mfr. Part # NCU18XH103J6SRB Mouser Part # 81-NCU18XH103J6SRB	Murata Electronics	NTC Thermistors 10K OHM 1608 SMD 5% Learn More about Murata Electronics murata ncu auto thermistors	Datasheet	4,674In Stock 8,000Expected 1/14/2027	Cut Tape ¥18.3 ¥16.6 ¥14.5 ¥13.5 Reel ¥9.6 View ¥11.8 ¥10.3 ¥9.1 ¥9	Min.: 1 Mult.: 1 : 4,000	NTC Thermistors	10 kOhms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18BB471QB5RB Murata Electronics 1: ¥59.8 8In Stock 4,000Expected 11/25/2026	Mfr. Part # PRF18BB471QB5RB Mouser Part # 81-PRF18BB471QB5RB	Murata Electronics	PTC 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 ¥59.8 ¥55.6 ¥49.2 ¥45.3 Reel ¥31.4 View ¥40.4 ¥36.2 ¥30.7 ¥30.6 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors PRF18BD471RB5RB Murata Electronics 1: ¥68.1 7,599Expected 12/4/2026	Mfr. Part # PRF18BD471RB5RB Mouser Part # 81-PRF18BD471RB5RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	7,599Expected 12/4/2026	Cut Tape ¥68.1 ¥63.3 ¥56 ¥53.3 Reel ¥39.4 View ¥47.8 ¥41.5 ¥37.9 ¥37 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)