Surface Mount Fuses – Mouser Singapore

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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.

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Part #

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

0451.250NRL
Littelfuse
1: $3.10
5,194In Stock

Mfr. Part No.
0451.250NRL

Mouser Part No
576-0451.250NRL

Littelfuse

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

Learn More

Datasheet

5,194In Stock

Cut Tape

$3.10

$2.71

$2.54

$2.08

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

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 0.5A .3046ohms 451 NANO2

0451.500MRL
Littelfuse
1: $1.94
9,689In Stock
19,000On Order

Mfr. Part No.
0451.500MRL

Mouser Part No
576-0451.500MRL

Littelfuse

Surface Mount Fuses 125VAC 0.5A .3046ohms 451 NANO2

Learn More

Datasheet

9,689In Stock

19,000On Order

Cut Tape

$1.94

$1.59

$1.46

$1.16

Reel

$0.766

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

500 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

304.6 mOhms

Surface Mount Fuses 125VAC 0.5A .3046ohms 451 NANO2

0451.500NRL
Littelfuse
1: $3.10
1,659In Stock

Mfr. Part No.
0451.500NRL

Mouser Part No
576-0451.500NRL

Littelfuse

Surface Mount Fuses 125VAC 0.5A .3046ohms 451 NANO2

Learn More

Datasheet

1,659In Stock

Cut Tape

$3.10

$2.71

$2.54

$1.89

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

500 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

304.6 mOhms

Surface Mount Fuses 125VAC 0.75A .1444ohms 451 NANO2

0451.750MRL
Littelfuse
1: $2.90
6,484In Stock
6,000Expected 29/10/2026

Mfr. Part No.
0451.750MRL

Mouser Part No
576-0451.750MRL

Littelfuse

Surface Mount Fuses 125VAC 0.75A .1444ohms 451 NANO2

Learn More

Datasheet

6,484In Stock

6,000Expected 29/10/2026

Cut Tape

$2.90

$2.64

$2.50

$2.03

View

Reel

$1.20

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

750 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

144.4 mOhms

Surface Mount Fuses 125VAC 0.8A .1355ohms 451 NANO2

0451.800MRL
Littelfuse
1: $3.10
2,123In Stock
2,000Expected 3/9/2026

Mfr. Part No.
0451.800MRL

Mouser Part No
576-0451.800MRL

Littelfuse

Surface Mount Fuses 125VAC 0.8A .1355ohms 451 NANO2

Learn More

Datasheet

2,123In Stock

2,000Expected 3/9/2026

Cut Tape

$3.10

$2.79

$2.46

$2.15

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

800 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

135.5 mOhms

Surface Mount Fuses 125VAC 1A .078ohms 451 NANO2

0451001.MRL
Littelfuse
1: $2.22
13,806In Stock
40,000On Order

Mfr. Part No.
0451001.MRL

Mouser Part No
576-0451001.MRL

Littelfuse

Surface Mount Fuses 125VAC 1A .078ohms 451 NANO2

Learn More

Datasheet

13,806In Stock

40,000On Order

Cut Tape

$2.22

$1.97

$1.70

$1.48

Reel

$0.766

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

1 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

78 mOhms

Surface Mount Fuses 125VAC 1A .078ohms 451 NANO2

0451001.NRL
Littelfuse
1: $2.90
4,020In Stock

Mfr. Part No.
0451001.NRL

Mouser Part No
576-0451001.NRL

Littelfuse

Surface Mount Fuses 125VAC 1A .078ohms 451 NANO2

Learn More

Datasheet

4,020In Stock

Cut Tape

$2.90

$2.64

$2.50

$2.03

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

1 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

78 mOhms

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

0451002.NRL
Littelfuse
1: $2.90
4,397In Stock

Mfr. Part No.
0451002.NRL

Mouser Part No
576-0451002.NRL

Littelfuse

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

Learn More

Datasheet

4,397In Stock

Cut Tape

$2.90

$2.64

$2.50

$2.03

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

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 3A .0227ohms 451 NANO2

0451003.MRL
Littelfuse
1: $1.51
17,230In Stock
16,000Expected 29/9/2026

Mfr. Part No.
0451003.MRL

Mouser Part No
576-0451003.MRL

Littelfuse

Surface Mount Fuses 125VAC 3A .0227ohms 451 NANO2

Learn More

Datasheet

17,230In Stock

16,000Expected 29/9/2026

Cut Tape

$1.51

$1.41

$1.16

$1.01

Reel

$0.738

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast 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

22.7 mOhms

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

0451005.NRL
Littelfuse
1: $3.10
1,794In Stock

Mfr. Part No.
0451005.NRL

Mouser Part No
576-0451005.NRL

Littelfuse

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

Learn More

Datasheet

1,794In Stock

Cut Tape

$3.10

$2.71

$2.54

$2.08

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

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 7A .009ohms 451 NANO2

0451007.MRL
Littelfuse
1: $2.22
18,974In Stock

Mfr. Part No.
0451007.MRL

Mouser Part No
576-0451007.MRL

Littelfuse

Surface Mount Fuses 125VAC 7A .009ohms 451 NANO2

Learn More

Datasheet

18,974In Stock

Cut Tape

$2.22

$1.97

$1.70

$1.50

Reel

$0.766

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

7 A

125 VAC

125 VDC

50 A, 50 A, 400 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

9 mOhms

Surface Mount Fuses 125VAC 8A .0077ohms 451 NANO2

0451008.MRL
Littelfuse
1: $2.95
9,557In Stock

Mfr. Part No.
0451008.MRL

Mouser Part No
576-0451008.MRL

Littelfuse

Surface Mount Fuses 125VAC 8A .0077ohms 451 NANO2

Learn More

Datasheet

9,557In Stock

Cut Tape

$2.95

$2.71

$2.41

$2.11

View

Reel

$1.20

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

8 A

125 VAC

125 VDC

50 A, 50 A, 400 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

7.7 mOhms

Surface Mount Fuses 125VAC 1.5A .063ohms 451 NANO2

045101.5MRL
Littelfuse
1: $2.24
26,587In Stock

Mfr. Part No.
045101.5MRL

Mouser Part No
576-045101.5MRL

Littelfuse

Surface Mount Fuses 125VAC 1.5A .063ohms 451 NANO2

Learn More

Datasheet

26,587In Stock

Cut Tape

$2.24

$2.01

$1.71

$1.52

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

1.5 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

63 mOhms

Surface Mount Fuses 65VAC 12A .0049ohms 451 NANO2

0451012.MRL
Littelfuse
1: $4.53
4,916In Stock
4,000Expected 14/9/2026

Mfr. Part No.
0451012.MRL

Mouser Part No
576-0451012.MRL

Littelfuse

Surface Mount Fuses 65VAC 12A .0049ohms 451 NANO2

Learn More

Datasheet

4,916In Stock

4,000Expected 14/9/2026

Cut Tape

$4.53

$4.13

$3.73

$3.24

View

Reel

$1.90

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

12 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

4.9 mOhms

Surface Mount Fuses 125VAC 2.5A .0286ohms 451 NANO2

045102.5MRL
Littelfuse
1: $2.96
8,933In Stock

Mfr. Part No.
045102.5MRL

Mouser Part No
576-045102.5MRL

Littelfuse

Surface Mount Fuses 125VAC 2.5A .0286ohms 451 NANO2

Learn More

Datasheet

8,933In Stock

Cut Tape

$2.96

$2.69

$2.42

$2.09

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

2.5 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

28.6 mOhms

Surface Mount Fuses 125VAC 3.5A .02ohms 451 NANO2

045103.5MRL
Littelfuse
1: $3.01
1,502In Stock
3,000Expected 27/8/2026

Mfr. Part No.
045103.5MRL

Mouser Part No
576-045103.5MRL

Littelfuse

Surface Mount Fuses 125VAC 3.5A .02ohms 451 NANO2

Learn More

Datasheet

1,502In Stock

3,000Expected 27/8/2026

Cut Tape

$3.01

$2.73

$2.42

$2.11

View

Reel

$1.20

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

3.5 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

20 mOhms

Surface Mount Fuses 125VAC 6.3A .0096ohms 451 NANO2

045106.3MRL
Littelfuse
1: $3.24
5,346In Stock
6,000Expected 11/1/2027

Mfr. Part No.
045106.3MRL

Mouser Part No
576-045106.3MRL

Littelfuse

Surface Mount Fuses 125VAC 6.3A .0096ohms 451 NANO2

Learn More

Datasheet

5,346In Stock

6,000Expected 11/1/2027

Cut Tape

$3.24

$2.80

$2.38

$2.03

View

Reel

$1.29

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

6.3 A

125 VAC

125 VDC

50 A, 50 A, 400 A

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

9.6 mOhms

Surface Mount Fuses 125VAC 1.25A .078ohms 451 NANO2

04511.25MRL
Littelfuse
1: $2.88
3,699In Stock

Mfr. Part No.
04511.25MRL

Mouser Part No
576-04511.25MRL

Littelfuse

Surface Mount Fuses 125VAC 1.25A .078ohms 451 NANO2

Learn More

Datasheet

3,699In Stock

Cut Tape

$2.88

$2.62

$2.49

$2.01

Reel

$1.32

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

1.25 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

78 mOhms

Surface Mount Fuses 125VAC 3.15A .0215ohms 451 NANO2

04513.15MRL
Littelfuse
1: $3.18
2,407In Stock

Mfr. Part No.
04513.15MRL

Mouser Part No
576-04513.15MRL

Littelfuse

Surface Mount Fuses 125VAC 3.15A .0215ohms 451 NANO2

Learn More

Datasheet

2,407In Stock

Cut Tape

$3.18

$2.80

$2.57

$2.15

View

Reel

$1.21

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

451

Surface Mount Ceramic Fuses

Fast Blow

3.15 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

21.5 mOhms

Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2

0452.375MRL
Littelfuse
1: $3.84
160In Stock
8,000On Order

Mfr. Part No.
0452.375MRL

Mouser Part No
576-0452.375MRL

Littelfuse

Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2

Learn More

Datasheet

160In Stock

8,000On Order

Cut Tape

$3.84

$3.58

$3.10

$2.56

View

Reel

$1.65

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

375 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

1.2 Ohms

Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2

0452.375NRL
Littelfuse
1: $4.11
6,237In Stock

Mfr. Part No.
0452.375NRL

Mouser Part No
576-0452.375NRL

Littelfuse

Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2

Learn More

Datasheet

6,237In Stock

Cut Tape

$4.11

$3.62

$3.40

$2.77

View

Reel

$1.65

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

375 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

1.2 Ohms

Surface Mount Fuses 125VAC 0.5A .7ohms 452 NANO2

0452.500MRL
Littelfuse
1: $3.70
9,098In Stock

Mfr. Part No.
0452.500MRL

Mouser Part No
576-0452.500MRL

Littelfuse

Surface Mount Fuses 125VAC 0.5A .7ohms 452 NANO2

Learn More

Datasheet

9,098In Stock

Cut Tape

$3.70

$3.29

$3.10

$2.57

View

Reel

$1.63

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

500 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

700 mOhms

Surface Mount Fuses 125VAC 0.75A .36ohms 452 NANO2

0452.750MRL
Littelfuse
1: $3.77
1,634In Stock
6,000On Order

Mfr. Part No.
0452.750MRL

Mouser Part No
576-0452.750MRL

Littelfuse

Surface Mount Fuses 125VAC 0.75A .36ohms 452 NANO2

Learn More

Datasheet

1,634In Stock

6,000On Order

Cut Tape

$3.77

$3.36

$3.16

$2.62

View

Reel

$1.63

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

750 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

360 mOhms

Surface Mount Fuses 125VAC 1A .225ohms 452 NANO2

0452001.MRL
Littelfuse
1: $2.99
18,799In Stock
14,000Expected 22/9/2026

Mfr. Part No.
0452001.MRL

Mouser Part No
576-0452001.MRL

Littelfuse

Surface Mount Fuses 125VAC 1A .225ohms 452 NANO2

Learn More

Datasheet

18,799In Stock

14,000Expected 22/9/2026

Cut Tape

$2.99

$2.69

$2.28

$2.01

Reel

$1.09

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

1 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

225 mOhms

Surface Mount Fuses 125VAC 1A .225ohms 452 NANO2

0452001.NRL
Littelfuse
1: $4.11
4,244In Stock

Mfr. Part No.
0452001.NRL

Mouser Part No
576-0452001.NRL

Littelfuse

Surface Mount Fuses 125VAC 1A .225ohms 452 NANO2

Learn More

Datasheet

4,244In Stock

Cut Tape

$4.11

$3.62

$3.40

$2.77

View

Reel

$1.65

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

452

Surface Mount Ceramic Fuses

Time Delay / Slow Blow

1 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

225 mOhms

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