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
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (GBP) 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 2.5A .045ohms 452 NANO2
Datasheet
3,039In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 45 mOhms
Littelfuse Surface Mount Fuses 250VAC 1A .107ohms 465 NANO2
Datasheet
7,222In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

465 Surface Mount Ceramic Fuses Time Delay / Slow Blow 1 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 107 mOhms
Littelfuse Surface Mount Fuses 250VAC 2.5A .0288ohms 464 NANO2
Datasheet
3,402In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

464 Surface Mount Ceramic Fuses Fast 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 28.8 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 452 NANO2
Datasheet
4,865In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Fuses Time Delay / Slow Blow 4 A 125 VAC 125 VDC NANO Reel, Cut Tape, MouseReel
Littelfuse Surface Mount Fuses 350VAC 1.25A .063ohms 885 NANO2
Datasheet
995In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

885 Surface Mount Fuses Fast Blow 1.25 A 350 VAC 500 VDC 100 A NANO2 - 40 C + 85 C Reel, Cut Tape, MouseReel 63 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .408ohms 449 NANO2
Datasheet
Product Comments
1,262In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

449 Surface Mount Fuses Time Delay / Slow 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 408 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .1444ohms 451 NANO2
Datasheet
1,625In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

451 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 0.63A .157ohms 462 NANO2
Datasheet
1,270In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

462 Surface Mount Fuses Time Delay / Slow Blow 630 mA 250 VAC 250 VDC 150 A, 150 A 10.5 mm x 4.5 mm - 40 C + 85 C Reel, Cut Tape, MouseReel 157 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .0227ohms 449 NANO2
Datasheet
Product Comments
8,600In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

449 Surface Mount Fuses Time Delay / Slow Blow 4 A 125 VAC 125 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 22.7 mOhms
Littelfuse Surface Mount Fuses 125VAC 10A .0056ohms 451 NANO2
Datasheet
5,045In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

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 48VAC 1.6A .092ohms 458 NANO2
Datasheet
1,946In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

458 Surface Mount Fuses Fast Blow 1.6 A 48 VAC 75 VDC 50 A, 50 A 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 92 mOhms
Littelfuse Surface Mount Fuses 48VAC 3.15A .045ohms 458 NANO2
Datasheet
1,981In Stock
3,000Expected 23/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

458 Surface Mount Fuses Fast Blow 3.15 A 48 VAC 75 VDC 50 A, 50 A 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 45 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .063ohms 451 NANO2
Datasheet
4,887In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

451 Surface Mount Ceramic Fuses Fast Blow 1.5 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 63 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.25A .078ohms 451 NANO2
Datasheet
3,769In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

451 Surface Mount Ceramic Fuses Fast Blow 1.25 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 78 mOhms
Littelfuse Surface Mount Fuses 250VAC 4A .016ohms 465 NANO2
Datasheet
3,491In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

465 Surface Mount Ceramic Fuses Time Delay / Slow Blow 4 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 16 mOhms
Littelfuse Surface Mount Fuses 250VAC 1.6A .056ohms 465 NANO2
Datasheet
2,475In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

465 Surface Mount Ceramic Fuses Time Delay / Slow Blow 1.6 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 56 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.125A 1.7ohms 451 NANO2
Datasheet
2,483In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

451 Surface Mount Ceramic Fuses Fast Blow 125 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 78 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .36ohms 452 NANO2
Datasheet
1,874In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 360 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.25A .078ohms 453 NANO2
Datasheet
1,884In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 1.25 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 78 mOhms
Littelfuse Surface Mount Fuses 250VAC 2A .039ohms 465 NANO2
Datasheet
4,531In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

465 Surface Mount Ceramic Fuses Time Delay / Slow Blow 2 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 39 mOhms
Littelfuse Surface Mount Fuses FUSE 125V V/FA NANO2 W/ Au Caps RoHS 20A
Datasheet
2,000In 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 3.15A .023ohms 448 NANO2
Datasheet
Product Comments
725In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

448 Surface Mount Fuses Fast Blow 3.15 A 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 4A .016ohms 451 NANO2
Datasheet
795In 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 1.6A .0448ohms 464 NANO2
Datasheet
1,438In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

464 Surface Mount Ceramic Fuses Fast Blow 1.6 A 250 VAC 250 VDC 100 A 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 44.8 mOhms
Littelfuse Surface Mount Fuses 125VAC 7A .009ohms 451 NANO2
Datasheet
1,389In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

451 Surface Mount Ceramic Fuses Fast Blow 7 A 125 VAC 125 VDC 50 A, 50 A, 400 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 9 mOhms