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 1.6A .0473ohms 885 NANO2
Datasheet
450In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

885 Surface Mount Fuses Fast Blow 1.6 A 350 VAC 500 VDC 100 A, 100 A 10.86 mm x 4.78 mm - 40 C + 105 C Reel, Cut Tape, MouseReel 47.3 mOhms
Littelfuse Surface Mount Fuses 250VAC 0.5A .227ohms 462 NANO2
Datasheet
89In Stock
6.000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

462 Surface Mount Fuses Time Delay / Slow Blow 500 mA 250 VAC 250 VDC 150 A, 150 A 10.5 mm x 4.5 mm - 40 C + 85 C Reel, Cut Tape, MouseReel 227 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.315A .3918ohms 451 NANO2
Datasheet
14.638On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

451 Surface Mount Ceramic Fuses Fast Blow 315 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 391.8 mOhms
Littelfuse Surface Mount Fuses 125VAC 25A .00192ohms 456 NANO2
Datasheet
8.541On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

456 Surface Mount Ceramic Fuses Fast Blow 25 A 125 VAC 72 VDC 100 A, 500 A 10.08 mm x 3.05 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 1.92 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.08A 4.47ohms 448 NANO2
Datasheet
Product Comments
1.495On Order
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 0.2A 1.24ohms 448 NANO2
Datasheet
Product Comments
1.815Expected 09/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 200 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 1.24 Ohms
Littelfuse Surface Mount Fuses 125VAC 2.5A .04ohms 449 NANO2
Datasheet
Product Comments
1.000Expected 01/02/2027
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 0.8A .1355ohms 453 NANO2
Datasheet
1.997Expected 29/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

453 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
Littelfuse Surface Mount Fuses 40A 125V HI CURRENT
Datasheet
1.203Expected 29/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

456SD Surface Mount Ceramic Fuses Fast Blow 40 A 125 VAC 75 VDC 100 A, 600 A 12.2 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 1.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.15A .0215ohms 453 NANO2
Datasheet
979Expected 26/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

453 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
Littelfuse Surface Mount Fuses 250VAC 2.5A .026ohms 465 NANO2
Datasheet
835In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

465 Surface Mount Ceramic Fuses Time Delay / Slow Blow 2.5 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 26 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.8A .1907ohms 448 NANO2
Datasheet
Product Comments
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1.000

448 Surface Mount Fuses Fast Blow 800 mA 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 190.7 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.062A 5.5ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 62 mA 125 VAC 125 VDC 50 A, 50 A, 300 A NANO - 55 C + 125 C Reel 5.5 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.08A 4.05ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 80 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 4.05 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.1A 3.1ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 100 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 3.1 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.16A 1.2157ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 160 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 1.2157 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.2A .8372ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 200 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 837.2 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.315A .3918ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 27 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 315 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 391.8 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A .4541ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

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 454.1 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.4A .4233ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 400 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 423.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.63A .2022ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 630 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 202.2 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.8A .1355ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 800 mA 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 135.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 8A .0077ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 8 A 125 VAC 125 VDC 400 A NANO - 55 C + 125 C Reel 7.7 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.6A .058ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 1.6 A 125 VAC 125 VDC 300 A NANO - 55 C + 125 C Reel 58 mOhms
Littelfuse Surface Mount Fuses 65VAC 12A .0049ohms 451 NANO2
Datasheet
Non-Stocked Lead-Time 23 Weeks
Min.: 5.000
Mult.: 5.000
: 5.000

451 Surface Mount Ceramic Fuses Fast Blow 12 A 65 VAC 65 VDC 400 A NANO - 55 C + 125 C Reel 4.9 mOhms