Resettable Fuses - PPTC – Mouser Liechtenstein

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MF-USML/X Low Ohmic PPTC Resettable Fuses

Bourns MF-USML/X Series are resistance surface mount Polymer Positive Temperature Coefficient (PPTC) resettable fuses with a 12V rating. The low ohmic series utilizes Bourns freeXpansion™ design, which increases the performance of the resettable fuse with higher hold currents (I_hold), higher voltages (Vmax), improved resistance stability, and a smaller footprint. The fuses can now achieve 5.5A I_hold at 12V_DCand current ratings of 1.75A to 5.5A in a space-saving 1210 package. Model MF-USML/X fuses are ideal for Li-ion battery packs, motherboards, and portable consumer electronic I/O port protection. The series is designed to protect against both overcurrent and overtemperature events within the designated specifications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) 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	Package/Case	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Resettable Fuses - PPTC 12V 2.0A-HD 50A 1210 MF-USML200/12-2 Bourns 1: CHF 0.572 5’003In Stock	Mfr. Part No. MF-USML200/12-2 Mouser Part No 652-MF-USML200/12-2	Bourns	Resettable Fuses - PPTC 12V 2.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	5’003In Stock	Cut Tape CHF 0.572 CHF 0.503 CHF 0.438 CHF 0.38 View Reel CHF 0.262 CHF 0.342 CHF 0.314 CHF 0.29 CHF 0.269 CHF 0.262 MouseReel Available	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 1210 SMD Polymer PTC 5.5A/6V MF-USML550/6-2 Bourns 1: CHF 0.652 903In Stock	Mfr. Part No. MF-USML550/6-2 Mouser Part No 652-MF-USML550/6-2	Bourns	Resettable Fuses - PPTC 1210 SMD Polymer PTC 5.5A/6V Learn More about Bourns mf usml x fuses	Datasheet	903In Stock	Cut Tape CHF 0.652 CHF 0.497 CHF 0.466 CHF 0.352 Reel CHF 0.264 View CHF 0.328 CHF 0.306 CHF 0.268 CHF 0.236 MouseReel Available	Min.: 1 Mult.: 1 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	5.5 A	12 VDC	11 A	50 A	10 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 6V 6.0A-HD 20A PTC MF-USML600/6-2 Bourns 1: CHF 0.612 3’226In Stock	Mfr. Part No. MF-USML600/6-2 Mouser Part No 652-MF-USML600/6-2	Bourns	Resettable Fuses - PPTC 6V 6.0A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	3’226In Stock	Cut Tape CHF 0.612 CHF 0.481 CHF 0.405 CHF 0.357 Reel CHF 0.251 View CHF 0.32 CHF 0.296 CHF 0.273 CHF 0.225 MouseReel Available	Min.: 1 Mult.: 1 : 3’500	MF-USML6-2	PCB Mount	SMD/SMT	6 A	6 VDC	12 A	50 A	10 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 6V 2.0A-HD 50A SMD MF-USML200/6-2 Bourns 1: CHF 0.612 3’170In Stock	Mfr. Part No. MF-USML200/6-2 Mouser Part No 652-MF-USML200/6-2	Bourns	Resettable Fuses - PPTC 6V 2.0A-HD 50A SMD Learn More about Bourns mf usml x fuses	Datasheet	3’170In Stock	Cut Tape CHF 0.612 CHF 0.481 CHF 0.405 CHF 0.357 View Reel CHF 0.225 CHF 0.32 CHF 0.296 CHF 0.273 CHF 0.251 CHF 0.225 MouseReel Available	Min.: 1 Mult.: 1 : 5’000	MF-USML6-2	SMD/SMT	SMD/SMT	2 A	6 VDC	4 A	50 A	40 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 6V 4.5A-HD 20A PTC MF-USML450/6-2 Bourns 1: CHF 0.612 3’291In Stock	Mfr. Part No. MF-USML450/6-2 Mouser Part No 652-MF-USML450/6-2	Bourns	Resettable Fuses - PPTC 6V 4.5A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	3’291In Stock	Cut Tape CHF 0.612 CHF 0.481 CHF 0.405 CHF 0.357 Reel CHF 0.251 View CHF 0.32 CHF 0.296 CHF 0.273 CHF 0.225 MouseReel Available	Min.: 1 Mult.: 1 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	4.5 A	6 VDC	9 A	50 A	14 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210 MF-USML175/12-2 Bourns 1: CHF 0.539 4’989In Stock	Mfr. Part No. MF-USML175/12-2 Mouser Part No 652-MF-USML175/12-2	Bourns	Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	4’989In Stock	Cut Tape CHF 0.539 CHF 0.497 CHF 0.413 CHF 0.38 View Reel CHF 0.279 CHF 0.343 CHF 0.316 CHF 0.289 CHF 0.287 CHF 0.279	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 5.5A-HD 50A 1210 MF-USML550/12-2 Bourns 1: CHF 0.716 10’396In Stock	Mfr. Part No. MF-USML550/12-2 Mouser Part No 652-MF-USML550/12-2	Bourns	Resettable Fuses - PPTC 12V 5.5A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	10’396In Stock	Cut Tape CHF 0.716 CHF 0.552 CHF 0.519 CHF 0.391 Reel CHF 0.302 View CHF 0.364 CHF 0.341 CHF 0.302 CHF 0.253	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 6V 3.0A-HD 50A SMD MF-USML300/6-2 Bourns 1: CHF 0.644 146In Stock 10’500Expected 1/5/2027	Mfr. Part No. MF-USML300/6-2 Mouser Part No 652-MF-USML300/6-2	Bourns	Resettable Fuses - PPTC 6V 3.0A-HD 50A SMD Learn More about Bourns mf usml x fuses	Datasheet	146In Stock 10’500Expected 1/5/2027	Cut Tape CHF 0.644 CHF 0.538 CHF 0.476 CHF 0.397 Reel CHF 0.295 View CHF 0.362 CHF 0.336 CHF 0.302 CHF 0.273 MouseReel Available	Min.: 1 Mult.: 1 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	3 A	6 VDC	6 A	50 A	24 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 12V 4.0A-HD 50A 1210 MF-USML400/12-2 Bourns 1: CHF 0.572 2’962In Stock	Mfr. Part No. MF-USML400/12-2 Mouser Part No 652-MF-USML400/12-2	Bourns	Resettable Fuses - PPTC 12V 4.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	2’962In Stock	Cut Tape CHF 0.572 CHF 0.503 CHF 0.478 CHF 0.414 View Reel CHF 0.318 CHF 0.40 CHF 0.367 CHF 0.332 CHF 0.318	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 6V 4.0A-HD 20A PTC MF-USML400/6-2 Bourns 1: CHF 0.644 530In Stock	Mfr. Part No. MF-USML400/6-2 Mouser Part No 652-MF-USML400/6-2	Bourns	Resettable Fuses - PPTC 6V 4.0A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	530In Stock	Cut Tape CHF 0.644 CHF 0.546 CHF 0.457 CHF 0.41 Reel CHF 0.298 View CHF 0.368 CHF 0.34 CHF 0.314 CHF 0.29 MouseReel Available	Min.: 1 Mult.: 1 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	4 A	6 VDC	8 A	50 A	18 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 12V 4.5A-HD 50A 1210 MF-USML450/12-2 Bourns 1: CHF 0.572 2’285In Stock	Mfr. Part No. MF-USML450/12-2 Mouser Part No 652-MF-USML450/12-2	Bourns	Resettable Fuses - PPTC 12V 4.5A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	2’285In Stock	Cut Tape CHF 0.572 CHF 0.503 CHF 0.438 CHF 0.38 Reel CHF 0.31 View CHF 0.345 CHF 0.322 CHF 0.31 CHF 0.233	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 5.0A-HD 50A 1210 MF-USML500/12-2 Bourns 1: CHF 0.467 4’363In Stock	Mfr. Part No. MF-USML500/12-2 Mouser Part No 652-MF-USML500/12-2	Bourns	Resettable Fuses - PPTC 12V 5.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	4’363In Stock	Cut Tape CHF 0.467 CHF 0.412 CHF 0.375 CHF 0.347 View Reel CHF 0.302 CHF 0.333 CHF 0.311 CHF 0.302 CHF 0.302	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 6V 7.0A-HD 20A PTC MF-USML700/6-2 Bourns 1: CHF 0.595 3’756In Stock	Mfr. Part No. MF-USML700/6-2 Mouser Part No 652-MF-USML700/6-2	Bourns	Resettable Fuses - PPTC 6V 7.0A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	3’756In Stock	Cut Tape CHF 0.595 CHF 0.496 CHF 0.417 CHF 0.367 Reel CHF 0.288 View CHF 0.33 CHF 0.304 CHF 0.288 CHF 0.258 MouseReel Available	Min.: 1 Mult.: 1 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	7 A	6 VDC	14 A	50 A	8 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 6V 2.6A-HD 50A SMD MF-USML260/6-2 Bourns 1: CHF 0.652 1’646In Stock	Mfr. Part No. MF-USML260/6-2 Mouser Part No 652-MF-USML260/6-2	Bourns	Resettable Fuses - PPTC 6V 2.6A-HD 50A SMD Learn More about Bourns mf usml x fuses	Datasheet	1’646In Stock	Cut Tape CHF 0.652 CHF 0.497 CHF 0.466 CHF 0.352 View Reel CHF 0.256 CHF 0.328 CHF 0.306 CHF 0.288 CHF 0.256 CHF 0.256 MouseReel Available	Min.: 1 Mult.: 1 : 5’000	MF-USML6-2	SMD/SMT	SMD/SMT	2.6 A	6 VDC	5.2 A	50 A	30 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Resettable Fuses - PPTC 12V 3.0A-HD 50A 1210 MF-USML300/12-2 Bourns 1: CHF 0.604 10’484On Order	Mfr. Part No. MF-USML300/12-2 Mouser Part No 652-MF-USML300/12-2	Bourns	Resettable Fuses - PPTC 12V 3.0A-HD 50A 1210 Learn More about Bourns mf usml x fuses	Datasheet	10’484On Order	Cut Tape CHF 0.604 CHF 0.534 CHF 0.447 CHF 0.40 Reel CHF 0.247 View CHF 0.336 CHF 0.314 CHF 0.30 CHF 0.233	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 6V 1.75A-HD 50A SMD MF-USML175/6-2 Bourns 10’000: CHF 0.294 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML175/6-2 Mouser Part No 652-MF-USML175/6-2	Bourns	Resettable Fuses - PPTC 6V 1.75A-HD 50A SMD Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape CHF 0.294	Min.: 10’000 Mult.: 5’000 : 5’000	MF-USML6-2	SMD/SMT	SMD/SMT	1.75 A	6 VDC	3.5 A	50 A	50 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel
Resettable Fuses - PPTC 12V 2.6A-HD 50A 1210 MF-USML260/12-2 Bourns 10’000: CHF 0.363 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML260/12-2 Mouser Part No 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 CHF 0.363	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: CHF 0.358 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML350/12-2 Mouser Part No 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 CHF 0.358	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 6V 3.5A-HD 50A SMD MF-USML350/6-2 Bourns 10’500: CHF 0.274 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML350/6-2 Mouser Part No 652-MF-USML350/6-2	Bourns	Resettable Fuses - PPTC 6V 3.5A-HD 50A SMD Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape CHF 0.274	Min.: 10’500 Mult.: 3’500 : 3’500	MF-USML6-2	PCB Mount	SMD/SMT	3.5 A	6 V	7 A	50 A	18 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel
Resettable Fuses - PPTC 12V 3.8A-HD 50A 1210 MF-USML380/12-2 Bourns 10’500: CHF 0.294 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML380/12-2 Mouser Part No 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 CHF 0.294	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
Resettable Fuses - PPTC 6V 3.8A-HD 20A PTC MF-USML380/6-2 Bourns 10’500: CHF 0.31 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML380/6-2 Mouser Part No 652-MF-USML380/6-2	Bourns	Resettable Fuses - PPTC 6V 3.8A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape CHF 0.31	Min.: 10’500 Mult.: 3’500 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	3.8 A	6 V	8 A	50 A	16 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel
Resettable Fuses - PPTC 6V 5.0A-HD 20A PTC MF-USML500/6-2 Bourns 10’500: CHF 0.31 Non-Stocked Lead-Time 20 Weeks	Mfr. Part No. MF-USML500/6-2 Mouser Part No 652-MF-USML500/6-2	Bourns	Resettable Fuses - PPTC 6V 5.0A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape CHF 0.31	Min.: 10’500 Mult.: 3’500 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	5 A	6 V	10 A	50 A	14.5 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel
Resettable Fuses - PPTC 6V 6.5A-HD 20A PTC MF-USML650/6-2 Bourns 10’500: CHF 0.282 Non-Stocked Lead-Time 26 Weeks	Mfr. Part No. MF-USML650/6-2 Mouser Part No 652-MF-USML650/6-2	Bourns	Resettable Fuses - PPTC 6V 6.5A-HD 20A PTC Learn More about Bourns mf usml x fuses	Datasheet	Non-Stocked Lead-Time 26 Weeks	Cut Tape CHF 0.282	Min.: 10’500 Mult.: 3’500 : 3’500	MF-USML6-2	SMD/SMT	SMD/SMT	6.5 A	6 VDC	13 A	50 A	9 mOhms	1210 (3225 metric)	- 40 C	+ 85 C	Reel

MF-USML/X Low Ohmic PPTC Resettable Fuses

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