Surface Mount Fuses – Mouser Canada

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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 2.5A .02934ohms 448 NANO2

044802.5MR
Littelfuse
1: $3.04
1,576On Order

Mfr. Part #
044802.5MR

Mouser Part #
576-044802.5MR

Littelfuse

Surface Mount Fuses 125VAC 2.5A .02934ohms 448 NANO2

Learn More

Datasheet

Product Comments

1,576On Order

Cut Tape

$3.04

$2.73

$2.59

$2.10

View

Reel

$1.33

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

448

Surface Mount Fuses

Fast Blow

2.5 A

125 VAC

125 VDC

50 A at 125 VAC, 50 A at 125 VDC

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

29.34 mOhms

Surface Mount Fuses 125VAC 0.375A 1.513ohms 449 NANO2

0449.375MR
Littelfuse
1: $4.11
1,996On Order

Mfr. Part #
0449.375MR

Mouser Part #
576-0449.375MR

Littelfuse

Surface Mount Fuses 125VAC 0.375A 1.513ohms 449 NANO2

Learn More

Datasheet

Product Comments

1,996On Order

Cut Tape

$4.11

$3.84

$3.65

$2.95

View

Reel

$1.87

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

449

Surface Mount Fuses

Time Delay / Slow Blow

375 mA

125 VAC

125 VDC

50 A at 125 VAC, 50 A at 125 VDC

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

1.513 Ohms

Surface Mount Fuses 125VAC 4A .0227ohms 449 NANO2

0449004.MR
Littelfuse
1: $4.11
9,176On Order

Mfr. Part #
0449004.MR

Mouser Part #
576-0449004.MR

Littelfuse

Surface Mount Fuses 125VAC 4A .0227ohms 449 NANO2

Learn More

Datasheet

Product Comments

9,176On Order

Cut Tape

$4.11

$3.84

$3.65

$2.95

View

Reel

$1.87

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,000

449

Surface Mount Fuses

Time Delay / Slow Blow

4 A

125 VAC

125 VDC

50 A at 125 VAC, 50 A at 125 VDC

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

22.7 mOhms

Surface Mount Fuses 125VAC 4A .0186ohms 452 NANO2

0452004.NRL
Littelfuse
1: $3.96
4,980Expected 2026-05-11

Mfr. Part #
0452004.NRL

Mouser Part #
576-0452004.NRL

Littelfuse

Surface Mount Fuses 125VAC 4A .0186ohms 452 NANO2

Learn More

Datasheet

4,980Expected 2026-05-11

Cut Tape

$3.96

$3.65

$3.47

$2.79

View

Reel

$1.73

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

452

Surface Mount Fuses

Time Delay / Slow Blow

4 A

125 VAC

125 VDC

NANO

Reel, Cut Tape, MouseReel

Surface Mount Fuses 125VAC 20A .0023ohms 456 NANO2

0456020.ER
Littelfuse
1: $8.50
7,453On Order

Mfr. Part #
0456020.ER

Mouser Part #
576-0456020.ER

Littelfuse

Surface Mount Fuses 125VAC 20A .0023ohms 456 NANO2

Learn More

Datasheet

7,453On Order

Cut Tape

$8.50

$7.06

$6.52

$5.40

View

Reel

$3.48

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

456

Surface Mount Ceramic Fuses

Fast Blow

20 A

125 VAC

100 VDC

100 A at 125 VAC, 300 A at 100 VDC

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

2.3 mOhms

Surface Mount Fuses 48VAC 2A .0695ohms 458 NANO2

0458002.DR
Littelfuse
1: $1.89
10,239On Order

Mfr. Part #
0458002.DR

Mouser Part #
576-0458002.DR

Littelfuse

Surface Mount Fuses 48VAC 2A .0695ohms 458 NANO2

Learn More

Datasheet

10,239On Order

Cut Tape

$1.89

$1.51

$1.35

$1.26

Reel

$1.26

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

458

Surface Mount Fuses

Fast Blow

2 A

48 VAC

75 VDC

50 A at 48 VAC, 50 A at 75 VDC

3.18 mm x 1.58 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

69.5 mOhms

Surface Mount Fuses 32VAC 5A .027ohms 458 NANO2

0458005.DR
Littelfuse
1: $3.42
6,921On Order

Mfr. Part #
0458005.DR

Mouser Part #
576-0458005.DR

Littelfuse

Surface Mount Fuses 32VAC 5A .027ohms 458 NANO2

Learn More

Datasheet

6,921On Order

Cut Tape

$3.42

$3.12

$2.96

$2.39

View

Reel

$1.52

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

458

Surface Mount Fuses

Fast Blow

5 A

32 VAC

75 VDC

50 A at 32 VAC, 50 A at 75 VDC

3.18 mm x 1.58 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

27 mOhms

Surface Mount Fuses 48VAC 2.5A .06ohms 458 NANO2

045802.5DR
Littelfuse
1: $3.42
2,900On Order

Mfr. Part #
045802.5DR

Mouser Part #
576-045802.5DR

Littelfuse

Surface Mount Fuses 48VAC 2.5A .06ohms 458 NANO2

Learn More

Datasheet

2,900On Order

Cut Tape

$3.42

$3.12

$2.96

$2.39

View

Reel

$1.52

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

458

Surface Mount Fuses

Fast Blow

2.5 A

48 VAC

75 VDC

50 A at 48 VAC, 50 A at 75 VDC

3.18 mm x 1.58 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

60 mOhms

Surface Mount Fuses 32VAC 6.3A .0192ohms 458 NANO2

045806.3DR
Littelfuse
1: $3.42
1,500Expected 2026-04-03

Mfr. Part #
045806.3DR

Mouser Part #
576-045806.3DR

Littelfuse

Surface Mount Fuses 32VAC 6.3A .0192ohms 458 NANO2

Learn More

Datasheet

1,500Expected 2026-04-03

Cut Tape

$3.42

$3.12

$2.96

$2.39

View

Reel

$1.52

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

458

Surface Mount Fuses

Fast Blow

6.3 A

32 VAC

75 VDC

50 A at 32 VAC, 50 A at 75 VDC

3.18 mm x 1.58 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

19.2 mOhms

Surface Mount Fuses 350VAC 1.6A .0473ohms 885 NANO2

088501.6DR
Littelfuse
1: $7.51
1,500Expected 2026-06-15

Mfr. Part #
088501.6DR

Mouser Part #
576-088501.6DR

Littelfuse

Surface Mount Fuses 350VAC 1.6A .0473ohms 885 NANO2

Learn More

Datasheet

1,500Expected 2026-06-15

Cut Tape

$7.51

$6.94

$6.69

$5.20

View

Reel

$3.53

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

885

Surface Mount Fuses

Fast Blow

1.6 A

350 VAC

500 VDC

100 A at 350 VAC, 100 A at 500 VDC

10.86 mm x 4.78 mm

- 40 C

+ 105 C

Reel, Cut Tape, MouseReel

47.3 mOhms

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

0443005.DR
Littelfuse
1: $1.86
2,779Expected 2026-06-15

Mfr. Part #
0443005.DR

Mouser Part #
576-0443005.DR

Littelfuse

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

Learn More

Datasheet

2,779Expected 2026-06-15

Cut Tape

$1.86

$1.63

$1.52

$1.26

View

Reel

$1.04

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

5 A

250 VAC

125 VDC

50 A at 250 VAC, 100 A at 125 VDC

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

11.5 mOhms

Surface Mount Fuses 125VAC 0.08A 4.05ohms 451 NANO2

0451.080NRL
Littelfuse
5,000: $4.41
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
0451.080NRL

Mouser Part #
576-0451.080NRL

Littelfuse

Surface Mount Fuses 125VAC 0.08A 4.05ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$4.41

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

80 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

4.05 Ohms

Surface Mount Fuses 125VAC 0.1A 3.1ohms 451 NANO2

0451.100NRL
Littelfuse
5,000: $2.92
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
0451.100NRL

Mouser Part #
576-0451.100NRL

Littelfuse

Surface Mount Fuses 125VAC 0.1A 3.1ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.92

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

100 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

3.1 Ohms

Surface Mount Fuses 125VAC 0.16A 1.2157ohms 451 NANO2

0451.160NRL
Littelfuse
5,000: $2.92
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
0451.160NRL

Mouser Part #
576-0451.160NRL

Littelfuse

Surface Mount Fuses 125VAC 0.16A 1.2157ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.92

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

160 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

1.2157 Ohms

Surface Mount Fuses 125VAC 0.2A .8372ohms 451 NANO2

0451.200NRL
Littelfuse
5,000: $2.92
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
0451.200NRL

Mouser Part #
576-0451.200NRL

Littelfuse

Surface Mount Fuses 125VAC 0.2A .8372ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.92

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

200 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

837.2 mOhms

Surface Mount Fuses 125VAC 0.315A .3918ohms 451 NANO2

0451.315NRL
Littelfuse
5,000: $1.28
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
0451.315NRL

Mouser Part #
576-0451.315NRL

Littelfuse

Surface Mount Fuses 125VAC 0.315A .3918ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.28

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

315 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

391.8 mOhms

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

0443003.DR
Littelfuse
1: $2.86
Lead-Time 13 Weeks

Mfr. Part #
0443003.DR

Mouser Part #
576-0443003.DR

Littelfuse

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

Learn More

Datasheet

Lead-Time 13 Weeks

Cut Tape

$2.86

$2.56

$2.44

$1.96

View

Reel

$1.22

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

3 A

250 VAC

125 VDC

50 A at 250 VAC, 100 A at 125 VDC

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

28 mOhms

Surface Mount Fuses 250VAC 2.5A .035ohms 443 NANO2

044302.5DR
Littelfuse
1: $2.87
Lead-Time 13 Weeks

Mfr. Part #
044302.5DR

Mouser Part #
576-044302.5DR

Littelfuse

Surface Mount Fuses 250VAC 2.5A .035ohms 443 NANO2

Learn More

Datasheet

Lead-Time 13 Weeks

Cut Tape

$2.87

$2.58

$2.46

$1.98

View

Reel

$1.26

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,500

443

Surface Mount Fuses

Time Delay / Slow Blow

2.5 A

250 VAC

125 VDC

50 A at 250 VAC, 100 A at 125 VDC

10.08 mm x 3.05 mm

- 55 C

+ 125 C

Reel, Cut Tape, MouseReel

35 mOhms

Surface Mount Fuses 125VAC 0.8A .1907ohms 448 NANO2

0448.800MR
Littelfuse
1,000: $1.37
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0448.800MR

Mouser Part #
576-0448.800MR

Littelfuse

Surface Mount Fuses 125VAC 0.8A .1907ohms 448 NANO2

Learn More

Datasheet

Product Comments

Non-Stocked Lead-Time 15 Weeks

Reel

$1.37

$1.30

Min.: 1,000
Mult.: 1,000

Reel: 1,000

448

Surface Mount Fuses

Fast Blow

800 mA

125 VAC

125 VDC

50 A at 125 VAC, 50 A at 125 VDC

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel

190.7 mOhms

Surface Mount Fuses 125VAC 0.062A 5.5ohms 451 NANO2

0451.062NRL
Littelfuse
5,000: $4.41
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0451.062NRL

Mouser Part #
576-0451.062NRL

Littelfuse

Surface Mount Fuses 125VAC 0.062A 5.5ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$4.41

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

62 mA

125 VAC

125 VDC

50 A at 125 VAC, 300 A at 32VDC, 50 A at 125 VDC

NANO

- 55 C

+ 125 C

Reel

5.5 Ohms

Surface Mount Fuses 125VAC 0.375A .4541ohms 451 NANO2

0451.375NRL
Littelfuse
5,000: $1.28
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0451.375NRL

Mouser Part #
576-0451.375NRL

Littelfuse

Surface Mount Fuses 125VAC 0.375A .4541ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$1.28

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

375 mA

125 VAC

125 VDC

50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC

6.1 mm x 2.69 mm

- 55 C

+ 125 C

Reel

454.1 mOhms

Surface Mount Fuses 125VAC 0.4A .4233ohms 451 NANO2

0451.400NRL
Littelfuse
5,000: $1.28
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0451.400NRL

Mouser Part #
576-0451.400NRL

Littelfuse

Surface Mount Fuses 125VAC 0.4A .4233ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$1.28

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

400 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

423.3 mOhms

Surface Mount Fuses 125VAC 0.63A .2022ohms 451 NANO2

0451.630NRL
Littelfuse
5,000: $1.28
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0451.630NRL

Mouser Part #
576-0451.630NRL

Littelfuse

Surface Mount Fuses 125VAC 0.63A .2022ohms 451 NANO2

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$1.28

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

630 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

202.2 mOhms

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

0451.800NRL
Littelfuse
5,000: $1.28
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0451.800NRL

Mouser Part #
576-0451.800NRL

Littelfuse

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

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$1.28

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

800 mA

125 VAC

125 VDC

300 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

135.5 mOhms

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

0451008.NRL
Littelfuse
5,000: $1.28
Non-Stocked Lead-Time 15 Weeks

Mfr. Part #
0451008.NRL

Mouser Part #
576-0451008.NRL

Littelfuse

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

Learn More

Datasheet

Non-Stocked Lead-Time 15 Weeks

Reel

$1.28

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

Reel: 5,000

451

Surface Mount Ceramic Fuses

Fast Blow

8 A

125 VAC

125 VDC

400 A at 32 VDC

NANO

- 55 C

+ 125 C

Reel

7.7 mOhms

NANO Fuses

Mouser Electronics®

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

35 A at 125 VAC, 50 A at 125 VDC
35 A at 125 VAC, 50 A at 125 VDC, 400 A at 32 VDC
50 A at 125 VAC, 300 A at 32VDC, 50 A at 125 VDC
50 A at 125 VAC, 50 A at 125 VDC
50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC
50 A at 125 VAC, 50 A at 125 VDC, 400 A at 32 VDC
50 A at 250 VAC, 100 A at 125 VDC
50 A at 32 VAC, 50 A at 63 VDC
50 A at 32 VAC, 50 A at 75 VDC
50 A at 48 VAC, 50 A at 75 VDC
50 A at 65 VAC, 200 A at 85 VDC
50 A at 72 VAC, 50 A at 60 VDC
60 A at 600 VAC
100 A
100 A at 125 VAC, 300 A at 100 VDC
100 A at 125 VAC, 300 A at 65 VAC, 1 kA at 32 VDC, 500 A at 72 VDC
100 A at 125 VAC, 300 A at 65 VAC, 300 A at 100 VDC, 1 kA at 32 VDC, 500 A at 72 VDC
100 A at 125 VAC, 500 A at 72 VDC
100 A at 125 VAC, 600 A at 75 VDC
100 A at 250 VAC

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