Resettable Fuses - PPTC – Mouser South Africa

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Radial-Leaded PolySwitch Resettable PPTCs

Littelfuse Radial-Leaded Resettable PPTCs are designed to provide overcurrent protection for applications where space is not a concern, and resettable protection is preferred. With so many options in the radial-leaded PPTCs family, engineers can design with more flexibility. The components feature current ratings from 50mA to 15A, low resistance, and a fast time-to-trip. Higher voltage ratings (6V to 72V) allow for use in new applications. Littelfuse Radial-Leaded Resettable PPTCs are compatible with high-volume electronics assembly and can assist in meeting regulatory requirements.

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Part #

Resettable Fuses - PPTC 2.5A 30V 100A Imax UNCOATED

RUEF250U
Littelfuse
1: $0.45
2,054In Stock

Mfr. Part No.
RUEF250U

Mouser Part No
650-RUEF250U

Littelfuse

Resettable Fuses - PPTC 2.5A 30V 100A Imax UNCOATED

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Datasheet

2,054In Stock

$0.45

$0.407

$0.337

$0.312

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

2.5 A

30 VDC

4.9 A

100 A

80 mOhms

- 40 C

+ 85 C

5.8 mm

Bulk

Resettable Fuses - PPTC 2.5A 30V 40A Imax Uncoated

RUEF250U-2
Littelfuse
1: $0.53
4,482In Stock

Mfr. Part No.
RUEF250U-2

Mouser Part No
650-RUEF250U-2

Littelfuse

Resettable Fuses - PPTC 2.5A 30V 40A Imax Uncoated

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Datasheet

4,482In Stock

Cut Tape

$0.53

$0.48

$0.40

$0.369

Reel

$0.223

View

Min.: 1
Mult.: 1

Reel: 3,000

RUEF

PCB Mount

Radial

2.5 A

30 VDC

5 A

100 A

70 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 3A 30V 100A Imax

RUEF300-2
Littelfuse
1: $0.561
4,696In Stock

Mfr. Part No.
RUEF300-2

Mouser Part No
650-RUEF300-2

Littelfuse

Resettable Fuses - PPTC 3A 30V 100A Imax

Learn More

Datasheet

4,696In Stock

Cut Tape

$0.561

$0.514

$0.427

$0.394

Reel

$0.243

View

Min.: 1
Mult.: 1

Reel: 2,500

RUEF

PCB Mount

Radial

3 A

30 VDC

6 A

100 A

80 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 3A 30V 100A Imax

RUEF300-AP
Littelfuse
1: $0.561
2,313In Stock

Mfr. Part No.
RUEF300-AP

Mouser Part No
650-RUEF300-AP

Littelfuse

Resettable Fuses - PPTC 3A 30V 100A Imax

Learn More

Datasheet

2,313In Stock

$0.561

$0.514

$0.427

$0.394

Reel

$0.27

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

3 A

30 VDC

6 A

100 A

80 mOhms

- 40 C

+ 85 C

5.8 mm

Ammo Pack

Resettable Fuses - PPTC 3A 30V 100A Imax

RUEF300K-2
Littelfuse
1: $0.561
3,713In Stock

Mfr. Part No.
RUEF300K-2

Mouser Part No
650-RUEF300K-2

Littelfuse

Resettable Fuses - PPTC 3A 30V 100A Imax

Learn More

Datasheet

3,713In Stock

Cut Tape

$0.561

$0.514

$0.427

$0.394

Reel

$0.314

View

Min.: 1
Mult.: 1

Reel: 2,500

RUEF

PCB Mount

Radial

3 A

30 VDC

6 A

100 A

80 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 4A 30V 40A Imax

RUEF400-1
Littelfuse
1: $0.59
1,343In Stock

Mfr. Part No.
RUEF400-1

Mouser Part No
650-RUEF400-1

Littelfuse

Resettable Fuses - PPTC 4A 30V 40A Imax

Learn More

Datasheet

1,343In Stock

$0.59

$0.54

$0.448

$0.413

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

4 A

30 VDC

8 A

40 A

50 mOhms

- 40 C

+ 85 C

5.8 mm

Bulk

Resettable Fuses - PPTC 4A 30V 100A Imax

RUEF400-2
Littelfuse
1: $0.65
3,321In Stock

Mfr. Part No.
RUEF400-2

Mouser Part No
650-RUEF400-2

Littelfuse

Resettable Fuses - PPTC 4A 30V 100A Imax

Learn More

Datasheet

3,321In Stock

Cut Tape

$0.65

$0.599

$0.498

$0.455

Reel

$0.371

View

Min.: 1
Mult.: 1

Reel: 1,500

RUEF

PCB Mount

Radial

4 A

30 VDC

8 A

100 A

50 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 30V 4A-HD 100A RUEF

RUEF400-AP
Littelfuse
1: $0.65
810In Stock
1,000Expected 2026/03/23

Mfr. Part No.
RUEF400-AP

Mouser Part No
650-RUEF400-AP

Littelfuse

Resettable Fuses - PPTC 30V 4A-HD 100A RUEF

Learn More

Datasheet

810In Stock

1,000Expected 2026/03/23

Cut Tape

$0.65

$0.599

$0.498

$0.459

Reel

$0.315

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

4 A

30 VDC

8 A

100 A

50 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 4A 30V 40A Imax

RUEF400K
Littelfuse
1: $0.561
668In Stock

Mfr. Part No.
RUEF400K

Mouser Part No
650-RUEF400K

Littelfuse

Resettable Fuses - PPTC 4A 30V 40A Imax

Learn More

Datasheet

668In Stock

$0.561

$0.513

$0.426

$0.39

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

4 A

30 VDC

8 A

100 A

50 mOhms

- 40 C

+ 85 C

5.8 mm

Bulk

Resettable Fuses - PPTC 4A 30V 100A Imax

RUEF400K-2
Littelfuse
1: $0.60
1,440In Stock
1,500Expected 2026/03/23

Mfr. Part No.
RUEF400K-2

Mouser Part No
650-RUEF400K-2

Littelfuse

Resettable Fuses - PPTC 4A 30V 100A Imax

Learn More

Datasheet

1,440In Stock

1,500Expected 2026/03/23

Cut Tape

$0.60

$0.547

$0.468

$0.42

$0.39

Reel

$0.302

Min.: 1
Mult.: 1

Reel: 1,500

RUEF

PCB Mount

Radial

4 A

30 VDC

8 A

100 A

50 mOhms

- 40 C

+ 85 C

5.8 mm

Reel, Cut Tape

Resettable Fuses - PPTC 5A 30V 40A Imax

RUEF500-1
Littelfuse
1: $0.70
1,469In Stock

Mfr. Part No.
RUEF500-1

Mouser Part No
650-RUEF500-1

Littelfuse

Resettable Fuses - PPTC 5A 30V 40A Imax

Learn More

Datasheet

1,469In Stock

$0.70

$0.647

$0.536

$0.494

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

5 A

30 VDC

10 A

100 A

50 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 5A 30V 100A Imax

RUEF500-2
Littelfuse
1: $0.78
2,481In Stock

Mfr. Part No.
RUEF500-2

Mouser Part No
650-RUEF500-2

Littelfuse

Resettable Fuses - PPTC 5A 30V 100A Imax

Learn More

Datasheet

2,481In Stock

Cut Tape

$0.78

$0.69

$0.588

$0.549

Reel

$0.359

View

Min.: 1
Mult.: 1

Reel: 1,500

RUEF

PCB Mount

Radial

5 A

30 VDC

10 A

100 A

50 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 5A 30V 40A Imax

RUEF500K
Littelfuse
1: $0.68
420In Stock

Mfr. Part No.
RUEF500K

Mouser Part No
650-RUEF500K

Littelfuse

Resettable Fuses - PPTC 5A 30V 40A Imax

Learn More

Datasheet

420In Stock

$0.68

$0.619

$0.514

$0.476

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

5 A

30 VDC

10 A

100 A

50 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 5A 30V 100A Imax

RUEF500K-2
Littelfuse
1: $0.78
2,100In Stock

Mfr. Part No.
RUEF500K-2

Mouser Part No
650-RUEF500K-2

Littelfuse

Resettable Fuses - PPTC 5A 30V 100A Imax

Learn More

Datasheet

2,100In Stock

Cut Tape

$0.78

$0.718

$0.59

$0.549

View

Reel

$0.368

Min.: 1
Mult.: 1

Reel: 1,500

RUEF

PCB Mount

Radial

5 A

30 VDC

10 A

100 A

50 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 6A 30V 40A Imax

RUEF600-1
Littelfuse
1: $0.77
500In Stock

Mfr. Part No.
RUEF600-1

Mouser Part No
650-RUEF600-1

Littelfuse

Resettable Fuses - PPTC 6A 30V 40A Imax

Learn More

Datasheet

500In Stock

$0.77

$0.711

$0.59

$0.544

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

6 A

30 V

12 A

40 A

40 mOhms

- 40 C

+ 85 C

Bulk

Resettable Fuses - PPTC 6A 30V 40A Imax

RUEF600-2
Littelfuse
1: $0.88
430In Stock

Mfr. Part No.
RUEF600-2

Mouser Part No
650-RUEF600-2

Littelfuse

Resettable Fuses - PPTC 6A 30V 40A Imax

Learn More

Datasheet

430In Stock

Cut Tape

$0.88

$0.805

$0.669

$0.618

Reel

$0.424

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

6 A

30 VDC

12 A

40 A

40 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 6A 30V 100A Imax

RUEF600-AP
Littelfuse
1: $0.84
775In Stock

Mfr. Part No.
RUEF600-AP

Mouser Part No
650-RUEF600-AP

Littelfuse

Resettable Fuses - PPTC 6A 30V 100A Imax

Learn More

Datasheet

775In Stock

Cut Tape

$0.84

$0.768

$0.638

$0.59

Reel

$0.449

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

6 A

30 VDC

12 A

100 A

40 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 6A 30V 100A Imax

RUEF600K
Littelfuse
1: $0.85
476In Stock

Mfr. Part No.
RUEF600K

Mouser Part No
650-RUEF600K

Littelfuse

Resettable Fuses - PPTC 6A 30V 100A Imax

Learn More

Datasheet

476In Stock

$0.85

$0.736

$0.648

$0.555

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

6 A

30 VDC

12 A

100 A

40 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 7A 30V 100A Imax

RUEF700
Littelfuse
1: $0.79
2,909In Stock
5,000Expected 2026/03/24

Mfr. Part No.
RUEF700

Mouser Part No
650-RUEF700

Littelfuse

Resettable Fuses - PPTC 7A 30V 100A Imax

Learn More

Datasheet

2,909In Stock

5,000Expected 2026/03/24

$0.79

$0.723

$0.526

$0.50

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

7 A

30 VDC

14 A

100 A

30 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 7A 30V 100A Imax

RUEF700-2
Littelfuse
1: $0.93
2,426In Stock

Mfr. Part No.
RUEF700-2

Mouser Part No
650-RUEF700-2

Littelfuse

Resettable Fuses - PPTC 7A 30V 100A Imax

Learn More

Datasheet

2,426In Stock

Cut Tape

$0.93

$0.854

$0.709

$0.654

Reel

$0.437

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

7 A

30 VDC

14 A

100 A

30 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 7A 30V 100A Imax

RUEF700K
Littelfuse
1: $0.79
329In Stock

Mfr. Part No.
RUEF700K

Mouser Part No
650-RUEF700K

Littelfuse

Resettable Fuses - PPTC 7A 30V 100A Imax

Learn More

Datasheet

329In Stock

$0.79

$0.727

$0.604

$0.557

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

7 A

30 VDC

14 A

100 A

30 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 8A 30V 40A Imax

RUEF800-2
Littelfuse
1: $1.00
1,730In Stock

Mfr. Part No.
RUEF800-2

Mouser Part No
650-RUEF800-2

Littelfuse

Resettable Fuses - PPTC 8A 30V 40A Imax

Learn More

Datasheet

1,730In Stock

Cut Tape

$1.00

$0.88

$0.765

$0.706

Reel

$0.485

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

8 A

30 VDC

16 A

100 A

20 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 8A 30V 40A Imax

RUEF800K
Littelfuse
1: $0.87
298In Stock

Mfr. Part No.
RUEF800K

Mouser Part No
650-RUEF800K

Littelfuse

Resettable Fuses - PPTC 8A 30V 40A Imax

Learn More

Datasheet

298In Stock

$0.87

$0.798

$0.637

$0.597

View

Min.: 1
Mult.: 1

RUEF

PCB Mount

Radial

8 A

30 VDC

16 A

100 A

20 mOhms

- 40 C

+ 85 C

10.9 mm

Bulk

Resettable Fuses - PPTC 8A 30V 40A Imax

RUEF800K-2
Littelfuse
1: $1.00
1,283In Stock

Mfr. Part No.
RUEF800K-2

Mouser Part No
650-RUEF800K-2

Littelfuse

Resettable Fuses - PPTC 8A 30V 40A Imax

Learn More

Datasheet

1,283In Stock

Cut Tape

$1.00

$0.922

$0.755

$0.707

Reel

$0.534

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

8 A

30 VDC

16 A

100 A

20 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Resettable Fuses - PPTC 9A 30V 100A Imax

RUEF900-2
Littelfuse
1: $1.21
2,003In Stock

Mfr. Part No.
RUEF900-2

Mouser Part No
650-RUEF900-2

Littelfuse

Resettable Fuses - PPTC 9A 30V 100A Imax

Learn More

Datasheet

2,003In Stock

Cut Tape

$1.21

$1.11

$0.921

$0.85

Reel

$0.576

View

Min.: 1
Mult.: 1

Reel: 1,000

RUEF

PCB Mount

Radial

9 A

30 VDC

18 A

100 A

20 mOhms

- 40 C

+ 85 C

10.9 mm

Reel, Cut Tape

Radial-Leaded PolySwitch Resettable PPTCs

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50 mA
80 mA
100 mA
120 mA
145 mA
150 mA
160 mA
170 mA
180 mA
200 mA
250 mA
300 mA
400 mA
500 mA
650 mA
700 mA
750 mA
900 mA
1 A
1.1 A

100 mA
160 mA
200 mA
240 mA
290 mA
300 mA
320 mA
340 mA
400 mA
500 mA
600 mA
650 mA
800 mA
900 mA
920 mA
1 A
1.3 A
1.4 A
1.5 A
1.8 A

6.4 mOhms
6.7 mOhms
8.6 mOhms
8.9 mOhms
9 mOhms
9.1 mOhms
9.2 mOhms
10 mOhms
10.2 mOhms
10.6 mOhms
11 mOhms
13 mOhms
13.1 mOhms
13.5 mOhms
14 mOhms
15 mOhms
16 mOhms
17 mOhms
17.5 mOhms
18.1 mOhms