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: 236
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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 1A .225ohms 452 NANO2
Datasheet
228In Stock
5,000Expected 16/06/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 1 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 225 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.4A .4233ohms 453 NANO2
Datasheet
303In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 400 mA 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 423.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.5A .3046ohms 453 NANO2
Datasheet
418In Stock
1,000Expected 09/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 500 mA 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 304.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.8A .1355ohms 453 NANO2
Datasheet
1,000In Stock
1,000Expected 25/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 800 mA 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 135.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .016ohms 453 NANO2
Datasheet
1,318In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 4 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 16 mOhms
Littelfuse Surface Mount Fuses 125VAC 7A .009ohms 453 NANO2
Datasheet
569In Stock
2,000Expected 24/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 7 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 400 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 9 mOhms
Littelfuse Surface Mount Fuses 125VAC 8A .0077ohms 453 NANO2
Datasheet
151In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 8 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 400 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 7.7 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.6A .058ohms 453 NANO2
Datasheet
821In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 1.6 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 58 mOhms
Littelfuse Surface Mount Fuses 65VAC 12A .0049ohms 453 NANO2
Datasheet
984In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 12 A 65 VAC 65 VDC 100 A at 65 VAC, 150 A at 65 VDC, 400 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 4.9 mOhms
Littelfuse Surface Mount Fuses 125VAC 2.5A .0286ohms 453 NANO2
Datasheet
494In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 2.5 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 28.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .02ohms 453 NANO2
Datasheet
39In Stock
2,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 3.5 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 20 mOhms
Littelfuse Surface Mount Fuses 125VAC 6.3A .0096ohms 453 NANO2
Datasheet
1,335In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 6.3 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 400 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 9.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.15A .0215ohms 453 NANO2
Datasheet
156In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 3.15 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 21.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 454 NANO2
Datasheet
1,055In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 375 mA 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 1.2 Ohms
Littelfuse Surface Mount Fuses 125VAC 5A .0136ohms 454 NANO2
Datasheet
2,482In Stock
2,000Expected 22/06/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 5 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 13.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .0224ohms 454 NANO2
Datasheet
402In Stock
1,000Expected 13/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 3.5 A 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 22.4 mOhms
Littelfuse Surface Mount Fuses 125VAC 20A .0023ohms 456 NANO2
Datasheet
3In Stock
7,500On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

456 Surface Mount Ceramic Fuses Fast Blow 20 A 125 VAC 100 VDC 100 A at 125 VAC, 300 A at 100 VDC 10.08 mm x 3.05 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 2.3 mOhms
Littelfuse Surface Mount Fuses 48VAC 3A .049ohms 458 NANO2
Datasheet
1,073In Stock
6,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

458 Surface Mount Fuses Fast Blow 3 A 48 VAC 75 VDC 50 A at 48 VAC, 50 A at 75 VDC 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 49 mOhms
Littelfuse Surface Mount Fuses 32VAC 4A .032ohms 458 NANO2
Datasheet
109In Stock
9,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

458 Surface Mount Fuses Fast Blow 4 A 32 VAC 75 VDC 50 A at 32 VAC, 50 A at 75 VDC 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 32 mOhms
Littelfuse Surface Mount Fuses 32VAC 7A .0175ohms 458 NANO2
Datasheet
2In Stock
3,000Expected 13/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

458 Surface Mount Fuses Fast Blow 7 A 32 VAC 63 VDC 50 A at 32 VAC, 50 A at 63 VDC 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 17.5 mOhms
Littelfuse Surface Mount Fuses 48VAC 3.5A .0375ohms 458 NANO2
Datasheet
1,402In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

458 Surface Mount Fuses Fast Blow 3.5 A 48 VAC 75 VDC 50 A at 48 VAC, 50 A at 75 VDC 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 37.5 mOhms
Littelfuse Surface Mount Fuses 48VAC 1.25A .125ohms 458 NANO2
Datasheet
364In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

458 Surface Mount Fuses Fast Blow 1.25 A 48 VAC 75 VDC 50 A at 48 VAC, 50 A at 75 VDC 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 125 mOhms
Littelfuse Surface Mount Fuses 250VAC 3.15A .0206ohms 464 NANO2
Datasheet
677In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

464 Surface Mount Ceramic Fuses Fast Blow 3.15 A 250 VAC 250 VDC 100 A at 250 VAC 12.1 mm x 4.5 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 20.6 mOhms
Littelfuse Surface Mount Fuses 350VAC 5A .0119ohms 885 NANO2
Datasheet
63In Stock
1,250Expected 27/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

885 Surface Mount Fuses Fast Blow 5 A 350 VAC 450 VDC 100 A at 350 VAC, 100 A at 450 VDC 10.86 mm x 4.78 mm - 40 C + 105 C Reel, Cut Tape, MouseReel 11.9 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.25A .5765ohms 451 NANO2
Datasheet
16,950On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

451 Surface Mount Ceramic Fuses Fast Blow 250 mA 125 VAC 125 VDC 50 A at 125 VAC, 50 A at 125 VDC, 300 A at 32 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 576.5 mOhms