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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Mounting Style
Termination Style
Hold Current
Maximum Voltage
Trip Current
Current Rating - Max
Resistance
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Bourns Resettable Fuses - PPTC 12V 4.5A-HD 50A 1210
Datasheet
2,587In Stock
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
Bourns Resettable Fuses - PPTC 12V 4.0A-HD 50A 1210
Datasheet
3,312In Stock
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
Bourns Resettable Fuses - PPTC 12V 2.0A-HD 50A 1210
Datasheet
5,127In Stock
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
Bourns Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210
Datasheet
853In Stock
10,000Expected 07/07/2026
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
Bourns Resettable Fuses - PPTC 12V 3.0A-HD 50A 1210
Datasheet
1,017In Stock
10,500Expected 06/10/2026
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
Bourns Resettable Fuses - PPTC 12V 5.0A-HD 50A 1210
Datasheet
2,457In Stock
10,500Expected 08/07/2026
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
Bourns Resettable Fuses - PPTC 12V 5.5A-HD 50A 1210
Datasheet
2,370In Stock
10,500Expected 20/10/2026
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
Bourns Resettable Fuses - PPTC 12V 2.6A-HD 50A 1210
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Bourns Resettable Fuses - PPTC 12V 3.5A-HD 50A 1210
Datasheet
Non-Stocked Lead-Time 16 Weeks
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
Bourns Resettable Fuses - PPTC 12V 3.8A-HD 50A 1210
Datasheet
Non-Stocked Lead-Time 16 Weeks
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