Resettable Fuses - PPTC – Mouser Canada

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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 6V 6.0A-HD 20A PTC

MF-USML600/6-2
Bourns
1: $0.864
4,880In Stock

Mfr. Part #
MF-USML600/6-2

Mouser Part #
652-MF-USML600/6-2

Bourns

Resettable Fuses - PPTC 6V 6.0A-HD 20A PTC

Learn More

Datasheet

4,880In Stock

Cut Tape

$0.864

$0.683

$0.472

$0.468

Reel

$0.467

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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: $0.994
6,281In Stock

Mfr. Part #
MF-USML700/6-2

Mouser Part #
652-MF-USML700/6-2

Bourns

Resettable Fuses - PPTC 6V 7.0A-HD 20A PTC

Learn More

Datasheet

6,281In Stock

Cut Tape

$0.994

$0.906

$0.802

$0.77

View

Reel

$0.467

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 2.6A-HD 50A SMD

MF-USML260/6-2
Bourns
1: $1.41
1,656In Stock

Mfr. Part #
MF-USML260/6-2

Mouser Part #
652-MF-USML260/6-2

Bourns

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

Learn More

Datasheet

1,656In Stock

Cut Tape

$1.41

$1.19

$1.10

$1.01

View

Reel

$0.516

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 1210 SMD Polymer PTC 5.5A/6V

MF-USML550/6-2
Bourns
1: $1.45
1,163In Stock

Mfr. Part #
MF-USML550/6-2

Mouser Part #
652-MF-USML550/6-2

Bourns

Resettable Fuses - PPTC 1210 SMD Polymer PTC 5.5A/6V

Learn More

Datasheet

1,163In Stock

Cut Tape

$1.45

$1.09

$0.827

$0.801

Reel

$0.508

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 1.75A-HD 50A SMD

MF-USML175/6-2
Bourns
1: $1.45
623In Stock

Mfr. Part #
MF-USML175/6-2

Mouser Part #
652-MF-USML175/6-2

Bourns

Resettable Fuses - PPTC 6V 1.75A-HD 50A SMD

Learn More

Datasheet

623In Stock

Cut Tape

$1.45

$1.09

$0.827

$0.801

View

Reel

$0.485

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 2.0A-HD 50A SMD

MF-USML200/6-2
Bourns
1: $1.45
3,343In Stock

Mfr. Part #
MF-USML200/6-2

Mouser Part #
652-MF-USML200/6-2

Bourns

Resettable Fuses - PPTC 6V 2.0A-HD 50A SMD

Learn More

Datasheet

3,343In Stock

Cut Tape

$1.45

$1.09

$0.827

$0.801

View

Reel

$0.485

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 6V 4.5A-HD 20A PTC

MF-USML450/6-2
Bourns
1: $1.45
3,291In Stock

Mfr. Part #
MF-USML450/6-2

Mouser Part #
652-MF-USML450/6-2

Bourns

Resettable Fuses - PPTC 6V 4.5A-HD 20A PTC

Learn More

Datasheet

3,291In Stock

Cut Tape

$1.45

$1.09

$0.827

$0.801

View

Reel

$0.49

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 4.5A-HD 50A 1210

MF-USML450/12-2
Bourns
1: $0.806
2,587In 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

Datasheet

2,587In Stock

Cut Tape

$0.806

$0.71

$0.657

$0.639

Reel

$0.575

View

Min.: 1
Mult.: 1

Reel: 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 2.0A-HD 50A 1210

MF-USML200/12-2
Bourns
1: $1.56
5,171In 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

Datasheet

5,171In Stock

Cut Tape

$1.56

$1.18

$0.89

$0.863

View

Reel

$0.556

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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: $0.979
4,603In Stock

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

Datasheet

4,603In Stock

Cut Tape

$0.979

$0.864

$0.822

$0.785

Reel

$0.619

View

Min.: 1
Mult.: 1

Reel: 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 1.75A-HD 50A 1210

MF-USML175/12-2
Bourns
1: $0.979
2,268In 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

Datasheet

2,268In Stock

Cut Tape

$0.979

$0.864

$0.822

$0.785

View

Reel

$0.57

Min.: 1
Mult.: 1

Reel: 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 6V 3.0A-HD 50A SMD

MF-USML300/6-2
Bourns
1: $1.09
1,738In Stock

Mfr. Part #
MF-USML300/6-2

Mouser Part #
652-MF-USML300/6-2

Bourns

Resettable Fuses - PPTC 6V 3.0A-HD 50A SMD

Learn More

Datasheet

1,738In Stock

Cut Tape

$1.09

$1.01

$0.827

$0.77

View

Reel

$0.516

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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: $0.806
3,462In 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

Datasheet

3,462In Stock

Cut Tape

$0.806

$0.729

$0.716

$0.694

Reel

$0.603

View

Min.: 1
Mult.: 1

Reel: 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
835In Stock

Mfr. Part #
MF-USML400/6-2

Mouser Part #
652-MF-USML400/6-2

Bourns

Resettable Fuses - PPTC 6V 4.0A-HD 20A PTC

Learn More

Datasheet

835In Stock

Cut Tape

$1.09

$1.01

$0.827

$0.77

View

Reel

$0.516

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 5.0A-HD 50A 1210

MF-USML500/12-2
Bourns
1: $0.979
2,834In 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

Datasheet

2,834In Stock

Cut Tape

$0.979

$0.864

$0.822

$0.785

Reel

$0.586

View

Min.: 1
Mult.: 1

Reel: 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 5.5A-HD 50A 1210

MF-USML550/12-2
Bourns
1: $0.965
737In Stock
3,500Expected 2026-04-30

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

Datasheet

737In Stock

3,500Expected 2026-04-30

Cut Tape

$0.965

$0.801

$0.734

$0.701

Reel

$0.566

View

Min.: 1
Mult.: 1

Reel: 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 2.6A-HD 50A 1210

MF-USML260/12-2
Bourns
5,000: $0.556
Non-Stocked Lead-Time 16 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

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$0.556

Min.: 5,000
Mult.: 5,000

Reel: 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
3,500: $0.629
Non-Stocked Lead-Time 16 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

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$0.629

$0.609

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

Reel: 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
1: $1.09
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
MF-USML350/6-2

Mouser Part #
652-MF-USML350/6-2

Bourns

Resettable Fuses - PPTC 6V 3.5A-HD 50A SMD

Learn More

Datasheet

Non-Stocked Lead-Time 16 Weeks

Cut Tape

$1.09

$1.01

$0.827

$0.77

View

Reel

$0.516

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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, Cut Tape, MouseReel

Resettable Fuses - PPTC 12V 3.8A-HD 50A 1210

MF-USML380/12-2
Bourns
3,500: $0.569
Non-Stocked Lead-Time 16 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

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$0.569

$0.559

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

Reel: 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
3,500: $0.517
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
MF-USML380/6-2

Mouser Part #
652-MF-USML380/6-2

Bourns

Resettable Fuses - PPTC 6V 3.8A-HD 20A PTC

Learn More

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$0.517

$0.516

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

Reel: 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
3,500: $0.507
Non-Stocked Lead-Time 16 Weeks

Mfr. Part #
MF-USML500/6-2

Mouser Part #
652-MF-USML500/6-2

Bourns

Resettable Fuses - PPTC 6V 5.0A-HD 20A PTC

Learn More

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

$0.507

$0.494

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

Reel: 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
3,500: $0.516
Non-Stocked Lead-Time 14 Weeks

Mfr. Part #
MF-USML650/6-2

Mouser Part #
652-MF-USML650/6-2

Bourns

Resettable Fuses - PPTC 6V 6.5A-HD 20A PTC

Learn More

Datasheet

Non-Stocked Lead-Time 14 Weeks

Reel

$0.516

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

Reel: 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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