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 350VAC 2.5A .0267ohms 885 NANO2
Datasheet
1.650In 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 2.5A .035ohms 443 NANO2
Datasheet
119In Stock
4.500Expected 9/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

443 Surface Mount Fuses Time Delay / Slow Blow 2.5 A 250 VAC 125 VDC 50 A, 100 A 10.08 mm x 3.05 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 35 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 0.125A 2.05ohms 448 NANO2
Datasheet
Product Comments
365In Stock
4.000Expected 9/16/2026
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 0.315A .7015ohms 448 NANO2
Datasheet
Product Comments
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
Product Comments
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
Product Comments
165In Stock
2.000Expected 9/22/2026
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
Product Comments
66In 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 1A .0863ohms 448 NANO2
Datasheet
Product Comments
157In Stock
5.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 1 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 86.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 5A .01531ohms 448 NANO2
Datasheet
Product Comments
1.711In Stock
3.000Expected 9/29/2026
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
Product Comments
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
Product Comments
1.064In Stock
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
Product Comments
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
Product Comments
1.390In 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
Product Comments
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
Product Comments
545In Stock
2.000Expected 9/22/2026
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 2.5A .04ohms 449 NANO2
Datasheet
Product Comments
298In Stock
1.000Expected 2/1/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

449 Surface Mount Fuses Time Delay / Slow Blow 2.5 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 40 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .0261ohms 449 NANO2
Datasheet
Product Comments
536In 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 0.16A 1.2157ohms 451 NANO2
Datasheet
61In Stock
5.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast Blow 160 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 1.2157 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.375A .4541ohms 451 NANO2
Datasheet
398In Stock
2.000Expected 10/19/2026
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
1.184In 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 0.63A .2022ohms 451 NANO2
Datasheet
91In Stock
5.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast Blow 630 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 202.2 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .0227ohms 451 NANO2
Datasheet
429In Stock
5.000Expected 3/1/2027
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 3/9/2027
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