Resettable Fuses - PPTC – Mouser Puerto Rico

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MF-USML PPTC Resettable Fuses

Bourns MF-USML PPTC Resettable Fuses offer a maximum operating current from 1.75A to 7A, resistance values as low as 13.5mΩ, and initial resistance values as low as 1mΩ. These low resistance values help boost the current carrying capability of these devices. The compact MF-USML models use Bourns freeXpansion™ design that increases the performance of the resettable fuse with higher hold currents, higher voltages, improved resistance stability, and smaller footprints. The 1210 footprint with a low profile is ideal for space-constrained mobile, and the surface-mount packaging is suitable for automated assembly. Typical applications for Bourns MF-USML PPTC Resettable Fuses include PC motherboard port protection, USB memory modules, wearable devices, and battery protection for smartphones.

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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	Mounting Style	Termination Style	Hold Current	Maximum Voltage	Trip Current	Current Rating - Max	Resistance	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210 MF-USML175/12-2 Bourns 1: $0.67 A tariff of 21% may be applied if shipping to the United States. 10,015In Stock	Mfr. Part # MF-USML175/12-2 Mouser Part # 652-MF-USML175/12-2	Bourns	Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	10,015In Stock	Cut Tape $0.67 $0.618 $0.513 $0.472 View Reel $0.306 $0.426 $0.393 $0.359 $0.352 $0.306 A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 5,000	MF-USML	PCB Mount	SMD/SMT	1.75 A	12 VDC	3.5 A	50 A	50 mOhms	- 40 C	+ 85 C	Reel, Cut Tape
Resettable Fuses - PPTC 12V 2.0A-HD 50A 1210 MF-USML200/12-2 Bourns 1: $0.71 A tariff of 21% may be applied if shipping to the United States. 5,060In Stock	Mfr. Part # MF-USML200/12-2 Mouser Part # 652-MF-USML200/12-2	Bourns	Resettable Fuses - PPTC 12V 2.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	5,060In Stock	Cut Tape $0.71 $0.623 $0.594 $0.472 View Reel $0.325 $0.439 $0.411 $0.359 $0.354 $0.325 MouseReel Available A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 5,000	MF-USML	PCB Mount	SMD/SMT	2 A	12 VDC	4 A	50 A	40 mOhms	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 12V 5.0A-HD 50A 1210 MF-USML500/12-2 Bourns 1: $0.60 A tariff of 21% may be applied if shipping to the United States. 12,448In Stock	Mfr. Part # MF-USML500/12-2 Mouser Part # 652-MF-USML500/12-2	Bourns	Resettable Fuses - PPTC 12V 5.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	12,448In Stock	Cut Tape $0.60 $0.504 $0.481 $0.418 Reel $0.344 View $0.407 $0.381 $0.359 $0.324 A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,500	MF-USML	PCB Mount	SMD/SMT	5 A	12 VDC	10 A	50 A	12 mOhms	- 40 C	+ 85 C	Reel, Cut Tape
Resettable Fuses - PPTC 12V 4.5A-HD 50A 1210 MF-USML450/12-2 Bourns 1: $0.71 A tariff of 21% may be applied if shipping to the United States. 2,480In Stock	Mfr. Part # MF-USML450/12-2 Mouser Part # 652-MF-USML450/12-2	Bourns	Resettable Fuses - PPTC 12V 4.5A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	2,480In Stock	Cut Tape $0.71 $0.623 $0.593 $0.472 Reel $0.399 View $0.434 $0.407 $0.40 $0.307 A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,500	MF-USML	PCB Mount	SMD/SMT	4.5 A	12 VDC	9 A	50 A	14 mOhms	- 40 C	+ 85 C	Reel, Cut Tape
Resettable Fuses - PPTC 12V 5.5A-HD 50A 1210 MF-USML550/12-2 Bourns 1: $0.89 A tariff of 21% may be applied if shipping to the United States. 10,746In Stock	Mfr. Part # MF-USML550/12-2 Mouser Part # 652-MF-USML550/12-2	Bourns	Resettable Fuses - PPTC 12V 5.5A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	10,746In Stock	Cut Tape $0.89 $0.686 $0.644 $0.486 Reel $0.375 View $0.452 $0.423 $0.375 $0.314 A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,500	MF-USML	PCB Mount	SMD/SMT	5.5 A	12 VDC	11 A	50 A	10 mOhms	- 40 C	+ 85 C	Reel, Cut Tape
Resettable Fuses - PPTC 12V 3.0A-HD 50A 1210 MF-USML300/12-2 Bourns 1: $0.89 A tariff of 21% may be applied if shipping to the United States. 18In Stock 10,500Expected 9/28/2026	Mfr. Part # MF-USML300/12-2 Mouser Part # 652-MF-USML300/12-2	Bourns	Resettable Fuses - PPTC 12V 3.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	18In Stock 10,500Expected 9/28/2026	Cut Tape $0.89 $0.741 $0.655 $0.543 Reel $0.354 View $0.499 $0.463 $0.413 $0.341 A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,500	MF-USML	PCB Mount	SMD/SMT	3 A	12 VDC	6 A	50 A	24 mOhms	- 40 C	+ 85 C	Reel, Cut Tape
Resettable Fuses - PPTC 12V 4.0A-HD 50A 1210 MF-USML400/12-2 Bourns 1: $0.71 A tariff of 21% may be applied if shipping to the United States. 2,982In Stock	Mfr. Part # MF-USML400/12-2 Mouser Part # 652-MF-USML400/12-2	Bourns	Resettable Fuses - PPTC 12V 4.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	2,982In Stock	Cut Tape $0.71 $0.624 $0.594 $0.514 View Reel $0.395 $0.496 $0.456 $0.413 $0.395 A tariff of 21% may be applied if shipping to the United States.	Min.: 1 Mult.: 1 : 3,500	MF-USML	PCB Mount	SMD/SMT	4 A	12 VDC	8 A	50 A	18 mOhms	- 40 C	+ 85 C	Reel, Cut Tape
Resettable Fuses - PPTC 12V 2.6A-HD 50A 1210 MF-USML260/12-2 Bourns 10,000: $0.451 A tariff of 21% may be applied if shipping to the United States. Non-Stocked Lead-Time 20 Weeks	Mfr. Part # MF-USML260/12-2 Mouser Part # 652-MF-USML260/12-2	Bourns	Resettable Fuses - PPTC 12V 2.6A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape $0.451 A tariff of 21% may be applied if shipping to the United States.	Min.: 10,000 Mult.: 5,000 : 5,000	MF-USML	PCB Mount	SMD/SMT	2.6 A	12 V	5.2 A	50 A	30 mOhms	- 40 C	+ 85 C	Reel
Resettable Fuses - PPTC 12V 3.5A-HD 50A 1210 MF-USML350/12-2 Bourns 10,500: $0.444 A tariff of 21% may be applied if shipping to the United States. Non-Stocked Lead-Time 20 Weeks	Mfr. Part # MF-USML350/12-2 Mouser Part # 652-MF-USML350/12-2	Bourns	Resettable Fuses - PPTC 12V 3.5A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape $0.444 A tariff of 21% may be applied if shipping to the United States.	Min.: 10,500 Mult.: 3,500 : 3,500	MF-USML	PCB Mount	SMD/SMT	3.5 A	12 VDC	7 A	50 A	22 mOhms	- 40 C	+ 85 C	Reel
Resettable Fuses - PPTC 12V 3.8A-HD 50A 1210 MF-USML380/12-2 Bourns 10,500: $0.365 A tariff of 21% may be applied if shipping to the United States. Non-Stocked Lead-Time 20 Weeks	Mfr. Part # MF-USML380/12-2 Mouser Part # 652-MF-USML380/12-2	Bourns	Resettable Fuses - PPTC 12V 3.8A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape $0.365 A tariff of 21% may be applied if shipping to the United States.	Min.: 10,500 Mult.: 3,500 : 3,500	MF-USML	PCB Mount	SMD/SMT	3.8 A	12 V	7.6 A	50 A	20 mOhms	- 40 C	+ 85 C	Reel

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