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 (IDR) 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 350VAC 1A .078ohms 885 NANO2
Datasheet
1.325In Stock
4.500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

885 Surface Mount Fuses Fast Blow 1 A 350 VAC 500 VDC 100 A, 100 A 10.86 mm x 4.78 mm - 40 C + 105 C Reel, Cut Tape, MouseReel 78 mOhms
Littelfuse Surface Mount Fuses 350VAC 4A .0152ohms 885 NANO2
Datasheet
5.070In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

885 Surface Mount Fuses Fast Blow 4 A 350 VAC 450 VDC 100 A, 100 A 10.86 mm x 4.78 mm - 40 C + 105 C Reel, Cut Tape, MouseReel 15.2 mOhms
Littelfuse Surface Mount Fuses 350VAC 2.5A .0267ohms 885 NANO2
Datasheet
1.690In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

885 Surface Mount Fuses Fast Blow 2.5 A 350 VAC 500 VDC 100 A, 100 A 10.86 mm x 4.78 mm - 40 C + 105 C Reel, Cut Tape, MouseReel 26.7 mOhms
Littelfuse Surface Mount Fuses 250VAC 3.5A .019ohms 443 NANO2
Datasheet
1.449In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

443 Surface Mount Fuses Time Delay / Slow Blow 3.5 A 250 VAC 125 VDC 50 A, 100 A 10.08 mm x 3.05 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 19 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.08A 4.47ohms 448 NANO2
Datasheet
495In Stock
1.000Expected 01/02/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 80 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 4.47 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.315A .7015ohms 448 NANO2
Datasheet
1.144In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 315 mA 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
Littelfuse Surface Mount Fuses 125VAC 0.375A .6155ohms 448 NANO2
Datasheet
673In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 375 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 615.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.5A .38ohms 448 NANO2
Datasheet
166In Stock
2.000Expected 24/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 500 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 380 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .229ohms 448 NANO2
Datasheet
132In Stock
3.000On Order
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 5A .01531ohms 448 NANO2
Datasheet
1.928In Stock
11.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 5 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 15.31 mOhms
Littelfuse Surface Mount Fuses 125VAC 7A .009ohms 448 NANO2
Datasheet
1.154In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 7 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 9 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .06514ohms 448 NANO2
Datasheet
32In Stock
2.000Expected 12/02/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 15 A 65 VAC 65 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 65.14 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .021ohms 448 NANO2
Datasheet
658In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 3.5 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 21 mOhms
Littelfuse Surface Mount Fuses 125VAC 6.3A .01044ohms 448 NANO2
Datasheet
1.360In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 6.3 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 10.44 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.25A .06619ohms 448 NANO2
Datasheet
1.050In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 1.25 A 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 0.5A .7633ohms 449 NANO2
Datasheet
265In Stock
2.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

449 Surface Mount Fuses Time Delay / Slow Blow 500 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 763.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 5A .0171ohms 449 NANO2
Datasheet
761In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

449 Surface Mount Fuses Time Delay / Slow Blow 5 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 17.1 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .0261ohms 449 NANO2
Datasheet
526In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

449 Surface Mount Fuses Time Delay / Slow Blow 3.5 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 26.1 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.1A 3.1ohms 451 NANO2
Datasheet
488In Stock
8.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast Blow 100 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 3.1 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.375A .4541ohms 451 NANO2
Datasheet
148In Stock
4.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast 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 454.1 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.4A .4233ohms 451 NANO2
Datasheet
1.174In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast Blow 400 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 423.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .0227ohms 451 NANO2
Datasheet
426In Stock
5.000Expected 01/03/2027
MouseReel Available
Min.: 1
Mult.: 1
: 5.000

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
Littelfuse Surface Mount Fuses 125VAC 1.6A .058ohms 451 NANO2
Datasheet
51In Stock
1.000Expected 09/03/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast Blow 1.6 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 58 mOhms
Littelfuse Surface Mount Fuses 125VAC 2.5A .0286ohms 451 NANO2
Datasheet
353In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5.000

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
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2
Datasheet
145In Stock
8.000Expected 07/10/2026
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