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 (Ihold), higher voltages (Vmax), improved resistance stability, and a smaller footprint. The fuses can now achieve 5.5A Ihold at 12VDC and 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.

Results: 23
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Description Datasheet Availability Pricing (TWD) 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
Package / Case
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Bourns Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210
Datasheet
10,327In Stock
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 5.0A-HD 50A 1210
Datasheet
12,611In Stock
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 6V 2.0A-HD 50A SMD
Datasheet
3,176In Stock
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
Bourns Resettable Fuses - PPTC 1210 SMD Polymer PTC 5.5A/6V
Datasheet
903In Stock
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
Bourns Resettable Fuses - PPTC 12V 4.5A-HD 50A 1210
Datasheet
2,585In 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 6V 4.5A-HD 20A PTC
Datasheet
3,291In Stock
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
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 3.0A-HD 50A 1210
Datasheet
652In Stock
10,500Expected 10/6/2026
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 6V 3.0A-HD 50A SMD
Datasheet
723In Stock
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
Bourns Resettable Fuses - PPTC 12V 4.0A-HD 50A 1210
Datasheet
2,992In 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 6V 4.0A-HD 20A PTC
Datasheet
535In Stock
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
Bourns Resettable Fuses - PPTC 12V 5.5A-HD 50A 1210
Datasheet
746In Stock
10,500Expected 10/20/2026
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 6V 6.0A-HD 20A PTC
Datasheet
3,256In Stock
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
Bourns Resettable Fuses - PPTC 6V 7.0A-HD 20A PTC
Datasheet
3,856In Stock
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
Bourns Resettable Fuses - PPTC 6V 1.75A-HD 50A SMD
Datasheet
123In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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, Cut Tape, MouseReel
Bourns Resettable Fuses - PPTC 6V 2.6A-HD 50A SMD
Datasheet
1,656In Stock
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
Bourns Resettable Fuses - PPTC 12V 2.6A-HD 50A 1210
Datasheet
Non-Stocked Lead-Time 20 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 20 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 6V 3.5A-HD 50A SMD
Datasheet
Non-Stocked Lead-Time 20 Weeks
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
Bourns Resettable Fuses - PPTC 12V 3.8A-HD 50A 1210
Datasheet
Non-Stocked Lead-Time 20 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
Bourns Resettable Fuses - PPTC 6V 3.8A-HD 20A PTC
Datasheet
Non-Stocked Lead-Time 20 Weeks
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
Bourns Resettable Fuses - PPTC 6V 5.0A-HD 20A PTC
Datasheet
Non-Stocked Lead-Time 20 Weeks
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
Bourns Resettable Fuses - PPTC 6V 6.5A-HD 20A PTC
Datasheet
Non-Stocked Lead-Time 26 Weeks
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