Surface Mount Fuses – Mouser Puerto Rico

.hide-partial { max-height: none; } .show-more { display: none; }

NANO Fuses

Littelfuse NANO® Fuses are fast-acting, high-performance fuses available in a wide range of available current ratings. The portfolio includes 448 NANO²® SMF Fuses, which are fast-acting fuses available in current ratings from 62mA to 15A. The 443 NANO² series features square surface-mount, time-lag devices with a 250V_AC voltage rating. Littelfuse 449 NANO² Slo-Blo^® Fuses offer enhanced inrush withstand characteristics over NANO² Fast-Acting Fuses. The 456 series is designed to support higher current requirements and is fully compatible with lead-free solder alloys. Littelfuse 456 fuses are ideal for storage system powers, cooling fan systems for PC servers, and base station power supplies. Littelfuse NANO Fuses include additional series as well.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 230

Applied Filters:

Series

Product

Fuse Type

Current Rating

Voltage Rating AC

Voltage Rating DC

Interrupt Rating

Fuse Size / Group

Minimum Operating Temperature

Maximum Operating Temperature

Packaging

Resistance

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Surface Mount Fuses 125VAC 3.15A .023ohms 448 NANO2

04483.15MR
Littelfuse
1: $2.14
725In Stock

Mfr. Part #
04483.15MR

Mouser Part #
576-04483.15MR

Littelfuse

Surface Mount Fuses 125VAC 3.15A .023ohms 448 NANO2

Learn More

Datasheet

Product Comments

725In Stock

Cut Tape

$2.14

$1.78

$1.64

$1.36

Reel

$0.977

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

448

Surface Mount Fuses

Fast Blow

3.15 A

125 VAC

125 VDC

50 A, 50 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

701.5 mOhms

Surface Mount Fuses 125VAC 4A .016ohms 451 NANO2

0451004.NRL
Littelfuse
1: $2.13
791In Stock

Mfr. Part #
0451004.NRL

Mouser Part #
576-0451004.NRL

Littelfuse

Surface Mount Fuses 125VAC 4A .016ohms 451 NANO2

Learn More

Datasheet

791In Stock

Cut Tape

$2.13

$1.94

$1.84

$1.49

View

Reel

$0.969

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

4 A

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

16 mOhms

Surface Mount Fuses 125VAC 0.062A 5.5ohms 451 NANO2

0451.062MRL
Littelfuse
1: $7.38
5,216In Stock
3,000Expected 3/3/2027

Mfr. Part #
0451.062MRL

Mouser Part #
576-0451.062MRL

Littelfuse

Surface Mount Fuses 125VAC 0.062A 5.5ohms 451 NANO2

Learn More

Datasheet

5,216In Stock

3,000Expected 3/3/2027

Cut Tape

$7.38

$6.31

$5.83

$4.83

View

Reel

$3.04

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

62 mA

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

5.5 Ohms

Surface Mount Fuses 125VAC 0.25A .5765ohms 451 NANO2

0451.250MRL
Littelfuse
1: $2.19
19,187In Stock
20,000Expected 10/7/2026

Mfr. Part #
0451.250MRL

Mouser Part #
576-0451.250MRL

Littelfuse

Surface Mount Fuses 125VAC 0.25A .5765ohms 451 NANO2

Learn More

Datasheet

19,187In Stock

20,000Expected 10/7/2026

Cut Tape

$2.19

$1.93

$1.73

$1.50

View

Reel

$0.887

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

250 mA

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

576.5 mOhms

Surface Mount Fuses 125VAC 2A .0367ohms 451 NANO2

0451002.MRL
Littelfuse
1: $1.67
49,784In Stock

Mfr. Part #
0451002.MRL

Mouser Part #
576-0451002.MRL

Littelfuse

Surface Mount Fuses 125VAC 2A .0367ohms 451 NANO2

Learn More

Datasheet

49,784In Stock

Cut Tape

$1.67

$1.50

$1.27

$1.12

Reel

$0.595

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

2 A

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

36.7 mOhms

Surface Mount Fuses 125VAC 4A .016ohms 451 NANO2

0451004.MRL
Littelfuse
1: $1.05
32,976In Stock

Mfr. Part #
0451004.MRL

Mouser Part #
576-0451004.MRL

Littelfuse

Surface Mount Fuses 125VAC 4A .016ohms 451 NANO2

Learn More

Datasheet

32,976In Stock

Cut Tape

$1.05

$0.992

$0.796

$0.702

Reel

$0.505

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

4 A

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

16 mOhms

Surface Mount Fuses 125VAC 5A .0125ohms 451 NANO2

0451005.MRL
Littelfuse
1: $1.71
53,482In Stock

Mfr. Part #
0451005.MRL

Mouser Part #
576-0451005.MRL

Littelfuse

Surface Mount Fuses 125VAC 5A .0125ohms 451 NANO2

Learn More

Datasheet

53,482In Stock

Cut Tape

$1.71

$1.52

$1.30

$1.14

Reel

$0.641

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

5 A

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

12.5 mOhms

Surface Mount Fuses 125VAC 10A .0056ohms 451 NANO2

0451010.MRL
Littelfuse
1: $2.56
32,995In Stock
18,000Expected 3/1/2027

Mfr. Part #
0451010.MRL

Mouser Part #
576-0451010.MRL

Littelfuse

Surface Mount Fuses 125VAC 10A .0056ohms 451 NANO2

Learn More

Datasheet

32,995In Stock

18,000Expected 3/1/2027

Cut Tape

$2.56

$2.29

$1.94

$1.64

Reel

$0.889

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

10 A

125 VAC

125 VDC

35 A, 50 A, 400 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

5.6 mOhms

Surface Mount Fuses 65VAC 15A .0037ohms 451 NANO2

0451015.MRL
Littelfuse
1: $2.53
23,987In Stock
29,000Expected 10/26/2026

Mfr. Part #
0451015.MRL

Mouser Part #
576-0451015.MRL

Littelfuse

Surface Mount Fuses 65VAC 15A .0037ohms 451 NANO2

Learn More

Datasheet

23,987In Stock

29,000Expected 10/26/2026

Cut Tape

$2.53

$2.28

$1.96

$1.73

Reel

$1.00

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

15 A

65 VAC

65 VDC

100 A, 150 A, 400 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

3.7 mOhms

Surface Mount Fuses 125VAC 3A .034ohms 452 NANO2

0452003.MRL
Littelfuse
1: $2.35
27,373In Stock
20,000Expected 9/3/2026

Mfr. Part #
0452003.MRL

Mouser Part #
576-0452003.MRL

Littelfuse

Surface Mount Fuses 125VAC 3A .034ohms 452 NANO2

Learn More

Datasheet

27,373In Stock

20,000Expected 9/3/2026

Cut Tape

$2.35

$2.11

$1.82

$1.59

Reel

$0.745

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

3 A

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

34 mOhms

Surface Mount Fuses 125VAC 5A .0136ohms 452 NANO2

0452005.MRL
Littelfuse
1: $2.32
57,938In Stock
33,000Expected 9/29/2026

Mfr. Part #
0452005.MRL

Mouser Part #
576-0452005.MRL

Littelfuse

Surface Mount Fuses 125VAC 5A .0136ohms 452 NANO2

Learn More

Datasheet

57,938In Stock

33,000Expected 9/29/2026

Cut Tape

$2.32

$2.08

$1.79

$1.57

Reel

$0.723

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

5 A

125 VAC

125 VDC

50 A, 50 A, 300 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

13.6 mOhms

Surface Mount Fuses 72VAC 7A .0105ohms 452 NANO2

0452007.MRL
Littelfuse
1: $3.88
8,900In Stock

Mfr. Part #
0452007.MRL

Mouser Part #
576-0452007.MRL

Littelfuse

Surface Mount Fuses 72VAC 7A .0105ohms 452 NANO2

Learn More

Datasheet

8,900In Stock

Cut Tape

$3.88

$3.58

$3.30

$2.74

View

Reel

$1.64

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

7 A

72 VAC

60 VDC

50 A, 50 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

10.5 mOhms

Surface Mount Fuses 125VAC 30A .00132ohms 456 NANO2

0456030.ER
Littelfuse
1: $4.91
32,391In Stock

Mfr. Part #
0456030.ER

Mouser Part #
576-0456030.ER

Littelfuse

Surface Mount Fuses 125VAC 30A .00132ohms 456 NANO2

Learn More

Datasheet

32,391In Stock

Cut Tape

$4.91

$4.47

$3.92

$3.42

View

Reel

$2.54

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

456

Surface Mount Ceramic Fuses

Fast Blow

30 A

125 VAC

72 VDC

100 A, 500 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

1.32 mOhms

Surface Mount Fuses VAC 40A .00105ohms 456 NANO2

0456040.DR
Littelfuse
1: $5.94
19,007In Stock

Mfr. Part #
0456040.DR

Mouser Part #
576-0456040.DR

Littelfuse

Surface Mount Fuses VAC 40A .00105ohms 456 NANO2

Learn More

Datasheet

19,007In Stock

Cut Tape

$5.94

$5.44

$4.83

$4.00

View

Reel

$3.14

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

456

Surface Mount Ceramic Fuses

Fast Blow

40 A

60 VDC

180 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

1.05 mOhms

Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2

0461002.ER
Littelfuse
1: $1.84
25,058In Stock

Mfr. Part #
0461002.ER

Mouser Part #
576-0461002.ER

Littelfuse

Surface Mount Fuses 600VAC 2A .045ohms 461 NANO2

Learn More

Datasheet

25,058In Stock

Cut Tape

$1.84

$1.65

$1.45

$1.25

View

Reel

$0.991

MouseReel Available

Min.: 1
Mult.: 1

: 2,500

461

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

2 A

600 VAC

80 VDC

60 A

10.1 mm x 3.12 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

45 mOhms

Surface Mount Fuses 350VAC 3.15A .0196ohms 885 NANO2

08853.15DR
Littelfuse
1: $5.84
8,381In Stock

Mfr. Part #
08853.15DR

Mouser Part #
576-08853.15DR

Littelfuse

Surface Mount Fuses 350VAC 3.15A .0196ohms 885 NANO2

Learn More

Datasheet

8,381In Stock

Cut Tape

$5.84

$5.15

$4.76

$3.93

View

Reel

$2.44

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

885

Surface Mount Fuses

Fast Blow

3.15 A

350 VAC

500 VDC

100 A, 100 A

10.86 mm x 4.78 mm

- 40 C

+ 105 C

Reel, Cut Tape, MouseReel

19.6 mOhms

Surface Mount Fuses 250VAC 0.5A .6ohms 443 NANO2

0443.500DR
Littelfuse
1: $1.49
16,436In Stock
13,500Expected 8/27/2026

Mfr. Part #
0443.500DR

Mouser Part #
576-0443.500DR

Littelfuse

Surface Mount Fuses 250VAC 0.5A .6ohms 443 NANO2

Learn More

Datasheet

16,436In Stock

13,500Expected 8/27/2026

Cut Tape

$1.49

$1.32

$1.24

$1.02

$0.883

Reel

$0.863

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

500 mA

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

600 mOhms

Surface Mount Fuses 250VAC 0.75A .275ohms 443 NANO2

0443.750DR
Littelfuse
1: $2.28
4,060In Stock

Mfr. Part #
0443.750DR

Mouser Part #
576-0443.750DR

Littelfuse

Surface Mount Fuses 250VAC 0.75A .275ohms 443 NANO2

Learn More

Datasheet

4,060In Stock

Cut Tape

$2.28

$1.91

$1.71

$1.49

View

Reel

$0.846

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

750 mA

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

275 mOhms

Surface Mount Fuses 250VAC 1A .18ohms 443 NANO2

0443001.DR
Littelfuse
1: $1.74
15,356In Stock

Mfr. Part #
0443001.DR

Mouser Part #
576-0443001.DR

Littelfuse

Surface Mount Fuses 250VAC 1A .18ohms 443 NANO2

Learn More

Datasheet

15,356In Stock

Cut Tape

$1.74

$1.55

$1.34

$1.16

View

Reel

$0.89

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

1 A

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

180 mOhms

Surface Mount Fuses 250VAC 2A .052ohms 443 NANO2

0443002.DR
Littelfuse
1: $1.75
12,482In Stock

Mfr. Part #
0443002.DR

Mouser Part #
576-0443002.DR

Littelfuse

Surface Mount Fuses 250VAC 2A .052ohms 443 NANO2

Learn More

Datasheet

12,482In Stock

Cut Tape

$1.75

$1.56

$1.34

$1.16

View

Reel

$0.846

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

2 A

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

52 mOhms

Surface Mount Fuses 250VAC 3A .028ohms 443 NANO2

0443003.DR
Littelfuse
1: $2.20
6,484In Stock
13,500On Order

Mfr. Part #
0443003.DR

Mouser Part #
576-0443003.DR

Littelfuse

Surface Mount Fuses 250VAC 3A .028ohms 443 NANO2

Learn More

Datasheet

6,484In Stock

13,500On Order

Cut Tape

$2.20

$1.73

$1.62

$1.31

View

Reel

$0.845

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

3 A

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

28 mOhms

Surface Mount Fuses 250VAC 4A .016ohms 443 NANO2

0443004.DR
Littelfuse
1: $2.28
4,218In Stock

Mfr. Part #
0443004.DR

Mouser Part #
576-0443004.DR

Littelfuse

Surface Mount Fuses 250VAC 4A .016ohms 443 NANO2

Learn More

Datasheet

4,218In Stock

Cut Tape

$2.28

$1.97

$1.82

$1.51

View

Reel

$0.846

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

4 A

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

16 mOhms

Surface Mount Fuses 250VAC 5A .0115ohms 443 NANO2

0443005.DR
Littelfuse
1: $1.61
3,020In Stock

Mfr. Part #
0443005.DR

Mouser Part #
576-0443005.DR

Littelfuse

Surface Mount Fuses 250VAC 5A .0115ohms 443 NANO2

Learn More

Datasheet

3,020In Stock

Cut Tape

$1.61

$1.43

$1.23

$1.07

View

Reel

$0.821

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

5 A

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

11.5 mOhms

Surface Mount Fuses 250VAC 1.5A .1ohms 443 NANO2

044301.5DR
Littelfuse
1: $2.17
2,655In Stock

Mfr. Part #
044301.5DR

Mouser Part #
576-044301.5DR

Littelfuse

Surface Mount Fuses 250VAC 1.5A .1ohms 443 NANO2

Learn More

Datasheet

2,655In Stock

Cut Tape

$2.17

$1.97

$1.72

$1.46

View

Reel

$0.845

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

1.5 A

250 VAC

125 VDC

50 A, 100 A

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

100 mOhms

Surface Mount Fuses 125VAC 0.062A 5.56ohms 448 NANO2

0448.062MR
Littelfuse
1: $4.89
4,656In Stock
4,000Expected 11/19/2026

Mfr. Part #
0448.062MR

Mouser Part #
576-0448.062MR

Littelfuse

Surface Mount Fuses 125VAC 0.062A 5.56ohms 448 NANO2

Learn More

Datasheet

Product Comments

4,656In Stock

4,000Expected 11/19/2026

Cut Tape

$4.89

$4.36

$4.03

$3.25

View

Reel

$2.03

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

448

Surface Mount Fuses

Fast Blow

62 mA

125 VAC

125 VDC

50 A, 50 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

5.56 Ohms

NANO Fuses

Customer Service Office

Company

Resources

Support

62 mA
80 mA
100 mA
125 mA
160 mA
200 mA
250 mA
315 mA
375 mA
400 mA
500 mA
630 mA
750 mA
800 mA
1 A
1.25 A
1.5 A
1.6 A
2 A
2.5 A

1.05 mOhms
1.3 mOhms
1.32 mOhms
1.92 mOhms
2.3 mOhms
3.7 mOhms
3.94 mOhms
4.65 mOhms
4.9 mOhms
5.33 mOhms
5.6 mOhms
5.8 mOhms
7 mOhms
7.7 mOhms
7.8 mOhms
8.8 mOhms
9 mOhms
9.3 mOhms
9.6 mOhms
10.44 mOhms