Resettable Fuses - PPTC – Mouser Singapore

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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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Part #

Resettable Fuses - PPTC 12V 1.75A-HD 50A 1210

MF-USML175/12-2
Bourns
1: $0.762
10,327In 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

Datasheet

10,327In Stock

Cut Tape

$0.762

$0.672

$0.639

$0.609

View

Reel

$0.472

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 5.0A-HD 50A 1210

MF-USML500/12-2
Bourns
1: $0.748
12,611In 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

Datasheet

12,611In Stock

Cut Tape

$0.748

$0.665

$0.639

$0.57

Reel

$0.468

View

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 1210 SMD Polymer PTC 5.5A/6V

MF-USML550/6-2
Bourns
1: $1.36
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

Datasheet

903In Stock

Cut Tape

$1.36

$1.03

$0.779

$0.755

Reel

$0.549

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

MF-USML6-2

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 2.0A-HD 50A SMD

MF-USML200/6-2
Bourns
1: $1.10
3,176In 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

Datasheet

3,176In Stock

Cut Tape

$1.10

$0.839

$0.787

$0.594

View

Reel

$0.386

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

MF-USML6-2

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 12V 4.5A-HD 50A 1210

MF-USML450/12-2
Bourns
1: $0.966
2,585In 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

Datasheet

2,585In Stock

Cut Tape

$0.966

$0.849

$0.808

$0.642

Reel

$0.521

View

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 6V 4.5A-HD 20A PTC

MF-USML450/6-2
Bourns
1: $1.10
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

Datasheet

3,291In Stock

Cut Tape

$1.10

$0.839

$0.787

$0.594

Reel

$0.434

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

MF-USML6-2

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 2.0A-HD 50A 1210

MF-USML200/12-2
Bourns
1: $0.966
5,097In 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

Datasheet

5,097In Stock

Cut Tape

$0.966

$0.849

$0.808

$0.642

$0.627

Reel

$0.627

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 12V 3.0A-HD 50A 1210

MF-USML300/12-2
Bourns
1: $0.966
99In Stock
10,500Expected 6/10/2026

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

Datasheet

99In Stock

10,500Expected 6/10/2026

Cut Tape

$0.966

$0.849

$0.808

$0.699

Reel

$0.483

View

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 3.0A-HD 50A SMD

MF-USML300/6-2
Bourns
1: $1.09
723In Stock

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

Datasheet

723In Stock

Cut Tape

$1.09

$0.839

$0.787

$0.594

Reel

$0.488

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

MF-USML6-2

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: $1.17
2,992In 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

Datasheet

2,992In Stock

Cut Tape

$1.17

$0.906

$0.849

$0.641

Reel

$0.466

View

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: $1.09
535In 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

Datasheet

535In Stock

Cut Tape

$1.09

$0.918

$0.808

$0.68

Reel

$0.503

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

MF-USML6-2

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 5.5A-HD 50A 1210

MF-USML550/12-2
Bourns
1: $0.966
746In Stock
10,500Expected 20/10/2026

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

Datasheet

746In Stock

10,500Expected 20/10/2026

Cut Tape

$0.966

$0.849

$0.808

$0.70

Reel

$0.57

View

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 6.0A-HD 20A PTC

MF-USML600/6-2
Bourns
1: $1.09
3,256In 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

Datasheet

3,256In Stock

Cut Tape

$1.09

$0.839

$0.787

$0.594

Reel

$0.487

View

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 7.0A-HD 20A PTC

MF-USML700/6-2
Bourns
1: $1.09
3,856In 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

Datasheet

3,856In Stock

Cut Tape

$1.09

$0.839

$0.787

$0.594

View

Reel

$0.487

MouseReel Available

Min.: 1
Mult.: 1

: 3,500

MF-USML6-2

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 1.75A-HD 50A SMD

MF-USML175/6-2
Bourns
1: $1.10
123In Stock

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

Datasheet

123In Stock

Cut Tape

$1.10

$0.839

$0.787

$0.594

View

Reel

$0.457

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

MF-USML6-2

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

Resettable Fuses - PPTC 6V 2.6A-HD 50A SMD

MF-USML260/6-2
Bourns
1: $1.10
1,656In 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

Datasheet

1,656In Stock

Cut Tape

$1.10

$0.839

$0.787

$0.782

$0.479

Reel

$0.479

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

MF-USML6-2

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 2.6A-HD 50A 1210

MF-USML260/12-2
Bourns
10,000: $0.578
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

Datasheet

Non-Stocked Lead-Time 20 Weeks

Cut Tape

$0.578

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: $0.604
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

Datasheet

Non-Stocked Lead-Time 20 Weeks

Cut Tape

$0.604

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: $0.462
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

Datasheet

Non-Stocked Lead-Time 20 Weeks

Cut Tape

$0.462

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: $0.48
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

Datasheet

Non-Stocked Lead-Time 20 Weeks

Cut Tape

$0.48

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: $0.494
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

Datasheet

Non-Stocked Lead-Time 20 Weeks

Cut Tape

$0.494

Min.: 10,500
Mult.: 3,500

: 3,500

MF-USML6-2

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: $0.494
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

Datasheet

Non-Stocked Lead-Time 20 Weeks

Cut Tape

$0.494

Min.: 10,500
Mult.: 3,500

: 3,500

MF-USML6-2

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: $0.503
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

Datasheet

Non-Stocked Lead-Time 26 Weeks

Cut Tape

$0.503

Min.: 10,500
Mult.: 3,500

: 3,500

MF-USML6-2

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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