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 15 OHM 20% SMD 0805 PRG21BB150MB1RK Murata Electronics 1: ¥94.7 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 ¥94.7 ¥86.4 ¥71.8 ¥69.4 View Reel ¥43 ¥65.6 ¥59.5 ¥56.5 ¥53 ¥43 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PTC Thermistors	15 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 0.2 OHM 20% SMD 0805 PRG21BC0R2MM1RA Murata Electronics 1: ¥124.6 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 ¥124.6 ¥113.9 ¥94.7 ¥90.7 View Reel ¥52 ¥87.4 ¥78.6 ¥74.4 ¥59 ¥52 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	200 mOhms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors PRG21BC1R0MM1RK Murata Electronics 1: ¥86.4 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 ¥86.4 ¥81.1 ¥75.6 ¥71.9 View Reel ¥46.2 ¥68.6 ¥60.8 ¥55 ¥46.2 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PTC Thermistors	1 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 470 OHM 50% SMD 0805 PRF21BC471QB5RA Murata Electronics 1: ¥76.4 5,720In 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	5,720In Stock	Cut Tape ¥76.4 ¥65.4 ¥56.5 ¥46.3 Reel ¥31.1 View ¥40.9 ¥33.7 ¥30.9 ¥30.6 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 PRF21BE471QB5RA Murata Electronics 1: ¥63.1 6,631In Stock	Mfr. Part # PRF21BE471QB5RA Mouser Part # 81-PRF21BE471QB5RA	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0805 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	6,631In Stock	Cut Tape ¥63.1 ¥59.1 ¥52.3 ¥46.3 Reel ¥31.7 View ¥40.9 ¥34.4 ¥31.4 ¥30.9 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors PRF18BE471RB5RB Murata Electronics 1: ¥68.1 3,760In Stock	Mfr. Part # PRF18BE471RB5RB Mouser Part # 81-PRF18BE471RB5RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	3,760In Stock	Cut Tape ¥68.1 ¥63.3 ¥56 ¥53.3 Reel ¥38.5 View ¥47.8 ¥40 ¥37.4 ¥36.5 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18BG471RB5RB Murata Electronics 1: ¥68.1 4,032In Stock	Mfr. Part # PRF18BG471RB5RB Mouser Part # 81-PRF18BG471RB5RB	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	4,032In Stock	¥68.1 ¥62.3 ¥56 ¥48.7 View ¥43.5 ¥40 ¥39.9 ¥36.4 ¥35.7	Min.: 1 Mult.: 1	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18AS471QS5RB Murata Electronics 1: ¥54.8 4,000In Stock	Mfr. Part # PRF18AS471QS5RB Mouser Part # 81-PRF18AS471QS5RB	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	4,000In Stock	Cut Tape ¥54.8 ¥46.3 ¥40.9 ¥32.7 Reel ¥19.9 View ¥27.1 ¥25.4 ¥19.6 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors PRF15BA102RB6RC Murata Electronics 1: ¥29.9 9,809In Stock	Mfr. Part # PRF15BA102RB6RC Mouser Part # 81-PRF15BA102RB6RC	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	9,809In Stock	Cut Tape ¥29.9 ¥24.7 ¥21.8 ¥17.4 View Reel ¥11 ¥15.3 ¥14.6 ¥13.1 ¥11 MouseReel Available	Min.: 1 Mult.: 1 : 10,000	PTC Thermistors	1 kOhms	PCB Mount	SMD/SMT	0402 (1005 metric)
PTC Thermistors 0.6 OHM 20% SMD 0805 PRG21BC0R6MM1RA Murata Electronics 1: ¥108 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 ¥108 ¥99.7 ¥94.2 ¥82.7 View Reel ¥55.8 ¥76.4 ¥68.6 ¥63.3 ¥58.5 ¥55.8 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	600 mOhms	PCB Mount	SMD/SMT
PTC Thermistors PRG21AR4R7MS5RA Murata Electronics 1: ¥121.3 2,637In Stock NRND	Mfr. Part # PRG21AR4R7MS5RA Mouser Part # 81-PRG21AR4R7MS5RA NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	2,637In Stock	¥121.3 ¥111.5 ¥106.6 ¥92.5 View Reel ¥53.7 ¥85.4 ¥76.7 ¥70.9 ¥65.3 ¥53.7	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	4.7 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors PRF15BB102RB6RC Murata Electronics 1: ¥24.9 56,774In Stock	Mfr. Part # PRF15BB102RB6RC Mouser Part # 81-PRF15BB102RB6RC	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	56,774In Stock	Cut Tape ¥24.9 ¥22.4 ¥19.6 ¥17.9 Reel ¥12.5 View ¥15.3 ¥14.6 ¥13.1 ¥12 MouseReel Available	Min.: 1 Mult.: 1 : 10,000	PTC Thermistors	1 kOhms	PCB Mount	SMD/SMT	0402 (1005 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18BA471QB5RB Murata Electronics 1: ¥33.2 64,029In Stock	Mfr. Part # PRF18BA471QB5RB Mouser Part # 81-PRF18BA471QB5RB	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	64,029In Stock	Cut Tape ¥33.2 ¥30.1 ¥28.2 ¥26.2 View Reel ¥18.8 ¥22.9 ¥20.6 ¥18.8 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,000 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18BC471QS5RB Murata Electronics 1: ¥76.4 8,140In Stock	Mfr. Part # PRF18BC471QS5RB Mouser Part # 81-PRF18BC471QS5RB	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	8,140In Stock	Cut Tape ¥76.4 ¥71.3 ¥66.4 ¥63.1 View Reel ¥46.2 ¥60.1 ¥54.1 ¥50.8 ¥46.2 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18BE471QS5RB Murata Electronics 1: ¥39.9 23,128In Stock	Mfr. Part # PRF18BE471QS5RB Mouser Part # 81-PRF18BE471QS5RB	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata auto prf ptc thermistors	Datasheet	23,128In Stock	Cut Tape ¥39.9 ¥36.4 ¥32.1 ¥30.4 Reel ¥21.9 View ¥27.1 ¥23.3 ¥21.1 MouseReel Available	Min.: 1 Mult.: 1 Max.: 12,000 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 470 OHM 50% SMD 0603 PRF18BG471QB5RB Murata Electronics 1: ¥28.2 50,053In Stock 32,000Expected 12/31/2026	Mfr. Part # PRF18BG471QB5RB Mouser Part # 81-PRF18BG471QB5RB	Murata Electronics	PTC Thermistors 470 OHM 50% SMD 0603 Learn More about Murata Electronics murata prf ptc thermistors	Datasheet	50,053In Stock 32,000Expected 12/31/2026	Cut Tape ¥28.2 ¥25.6 ¥22.4 ¥21.3 Reel ¥15.4 View ¥18.6 ¥16.1 ¥14.6 ¥14.3 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	470 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 100 OHM 20% SMD 0603 PRG18BB101MB1RB Murata Electronics 1: ¥43.2 37,161In Stock 32,000Expected 12/3/2026	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	37,161In Stock 32,000Expected 12/3/2026	Cut Tape ¥43.2 ¥38.9 ¥32.2 ¥26.9 Reel ¥17.3 View ¥25.2 ¥18.9 ¥15.6 ¥14.9 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 26,229In 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	26,229In Stock 96,000On Order On Order Ship Dates Mfr. #: PRG18BB221MB1RB Stock: 26,229 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 PRG18BB330MB1RB Murata Electronics 1: ¥41.5 142,834In 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	142,834In Stock	Cut Tape ¥41.5 ¥38.2 ¥31.7 ¥26.4 Reel ¥16.9 View ¥25.1 ¥18.6 ¥15.3 ¥14.8 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	33 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors PRG18BC220MM1RB Murata Electronics 1: ¥56.5 11,419In Stock	Mfr. Part # PRG18BC220MM1RB Mouser Part # 81-PRG18BC220MM1RB	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	11,419In Stock	Cut Tape ¥56.5 ¥52.3 ¥46.3 ¥44 View Reel ¥32.7 ¥39 ¥34.1 ¥32.7 MouseReel Available	Min.: 1 Mult.: 1 Max.: 4,000 : 4,000	PTC Thermistors	22 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)
PTC Thermistors 22 OHM 20% SMD 0805 PRG21BB220MB1RK Murata Electronics 1: ¥93 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 12/8/2026 9,000 Expected 12/11/2026 Factory Lead-Time: 12 Weeks	Cut Tape ¥93 ¥85.9 ¥82.2 ¥71.3 View Reel ¥42.9 ¥65.6 ¥59.1 ¥54.5 ¥50.3 ¥42.9 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	PTC Thermistors	22 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors 4.7 OHM 20% SMD 0805 PRG21BC4R7MM1RA Murata Electronics 1: ¥83.1 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 ¥83.1 ¥78.1 ¥72.8 ¥69.3 View Reel ¥50.3 ¥65.9 ¥59.5 ¥56 ¥50.3 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	4.7 Ohms	PCB Mount	SMD/SMT	0805 (2012 metric)
PTC Thermistors PRG15BC180MM1RC Murata Electronics 1: ¥31.6 8,550In Stock NRND	Mfr. Part # PRG15BC180MM1RC Mouser Part # 81-PRG15BC180MM1RC NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	8,550In Stock	Cut Tape ¥31.6 ¥27.9 ¥23.3 ¥19.3 Reel ¥11.1 View ¥17.8 ¥16.4 ¥13.6 ¥10.5 MouseReel Available	Min.: 1 Mult.: 1 : 10,000	PTC Thermistors	18 Ohms	PCB Mount	SMD/SMT	0402 (1005 metric)
PTC Thermistors PRG15BC3R3MM1RC Murata Electronics 1: ¥28.2 11,013In Stock NRND	Mfr. Part # PRG15BC3R3MM1RC Mouser Part # 81-PRG15BC3R3MM1RC NRND	Murata Electronics	PTC Thermistors Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	11,013In Stock	Cut Tape ¥28.2 ¥25.9 ¥22.8 ¥21.4 Reel ¥15.6 View ¥18.8 ¥17.9 ¥16.1 ¥13.8 MouseReel Available	Min.: 1 Mult.: 1 : 10,000	PTC Thermistors	3.3 Ohms	PCB Mount	SMD/SMT	0402 (1005 metric)
PTC Thermistors 2.2 OHM 20% SMD 0603 PRG18BC2R2MM1RB Murata Electronics 1: ¥68.1 Non-Stocked Lead-Time 12 Weeks NRND	Mfr. Part # PRG18BC2R2MM1RB Mouser Part # 81-PRG18BC2R2MM1RB NRND	Murata Electronics	PTC Thermistors 2.2 OHM 20% SMD 0603 Learn More about Murata Electronics murata prg ptc thermistors	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape ¥68.1 ¥62 ¥48.5 ¥43.4 Reel ¥27.9 View ¥39.4 ¥30.6 ¥25.1 ¥24.9 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	PTC Thermistors	2.2 Ohms	PCB Mount	SMD/SMT	0603 (1608 metric)

200 mOhms
400 mOhms
600 mOhms
1 Ohms
1.5 Ohms
2.2 Ohms
3.3 Ohms
4.7 Ohms
6.8 Ohms
10 Ohms
15 Ohms
18 Ohms
22 Ohms
33 Ohms
42 Ohms
47 Ohms
68 Ohms
100 Ohms
220 Ohms
470 Ohms