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 250VAC 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.

Results: 230
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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model 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
Littelfuse Surface Mount Fuses 125VAC 4A .016ohms 451 NANO2
Datasheet
826In Stock
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
Littelfuse Surface Mount Fuses 250VAC 1A .0762ohms 464 NANO2
Datasheet
1 630In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

464 Surface Mount Ceramic Fuses Fast Blow 1 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 76.2 mOhms
Littelfuse Surface Mount Fuses FUSE 125V V/FA NANO2 W/ Au Caps RoHS 20A
Datasheet
52In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

456 Surface Mount Fuses Fast Blow 20 A 100 VDC 100 A, 300 A, 300 A, 500 A, 1 kA NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 2.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .1444ohms 453 NANO2
Datasheet
1 369In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

453 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
Littelfuse Surface Mount Fuses 250VAC 1.25A .083ohms 465 NANO2
Datasheet
710In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 500

465 Surface Mount Fuses Time Delay / Slow Blow 1.25 A 250 VAC 250 VDC 100 A NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 83 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.062A 5.5ohms 451 NANO2
Datasheet
7 735In Stock
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
Littelfuse Surface Mount Fuses 125VAC 2A .0367ohms 451 NANO2
Datasheet
45 586In Stock
34 000Expected 29/06/2026
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
Littelfuse Surface Mount Fuses 125VAC 5A .0125ohms 451 NANO2
Datasheet
41 588In Stock
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
Littelfuse Surface Mount Fuses 125VAC 10A .0056ohms 451 NANO2
Datasheet
24 667In Stock
24 000Expected 01/09/2026
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
Littelfuse Surface Mount Fuses 125VAC 0.5A .7ohms 452 NANO2
Datasheet
12 923In Stock
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
Littelfuse Surface Mount Fuses 125VAC 20A .0023ohms 456 NANO2
Datasheet
10 119In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

456 Surface Mount Ceramic Fuses Fast Blow 20 A 125 VAC 100 VDC 100 A, 300 A 10.08 mm x 3.05 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 2.3 mOhms
Littelfuse Surface Mount Fuses 250VAC 0.75A .275ohms 443 NANO2
Datasheet
4 070In Stock
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
Littelfuse Surface Mount Fuses 250VAC 1A .18ohms 443 NANO2
Datasheet
11 358In Stock
6 000On Order
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
Littelfuse Surface Mount Fuses 250VAC 2A .052ohms 443 NANO2
Datasheet
9 072In Stock
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
Littelfuse Surface Mount Fuses 250VAC 4A .016ohms 443 NANO2
Datasheet
4 775In Stock
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
Littelfuse Surface Mount Fuses 250VAC 5A .0115ohms 443 NANO2
Datasheet
3 812In Stock
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
Littelfuse Surface Mount Fuses 125VAC 0.062A 5.56ohms 448 NANO2
Datasheet
Product Comments
2 302In Stock
4 000Expected 13/07/2026
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
Littelfuse Surface Mount Fuses 125VAC 0.1A 2.94ohms 448 NANO2
Datasheet
Product Comments
1 012In Stock
10 000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 100 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 2.94 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.125A 2.05ohms 448 NANO2
Datasheet
Product Comments
2 368In Stock
4 000Expected 16/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 125 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 66.19 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.16A 1.67ohms 448 NANO2
Datasheet
Product Comments
1 120In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 160 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 1.67 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.25A .95ohms 448 NANO2
Datasheet
Product Comments
2 918In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 250 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 950 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .229ohms 448 NANO2
Datasheet
Product Comments
1 832In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 750 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 229 mOhms
Littelfuse Surface Mount Fuses 125VAC 2A .03529ohms 448 NANO2
Datasheet
Product Comments
2 034In Stock
4 000Expected 11/06/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 2 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 35.29 mOhms
Littelfuse Surface Mount Fuses 125VAC 8A .0078ohms 448 NANO2
Datasheet
Product Comments
1 513In Stock
2 000Expected 11/06/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 8 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 7.8 mOhms
Littelfuse Surface Mount Fuses 125VAC 10A .007ohms 448 NANO2
Datasheet
Product Comments
1 434In Stock
2 000Expected 10/06/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1 000

448 Surface Mount Fuses Fast Blow 10 A 125 VAC 125 VDC 35 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 7 mOhms