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 (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 2A .0625ohms 452 NANO2
Datasheet
4,791In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 2 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 62.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .034ohms 452 NANO2
Datasheet
3,433In Stock
10,000Expected 04/02/2027
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 34 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 452 NANO2
Datasheet
12,023In Stock
15,000Expected 19/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 18.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 5A .0136ohms 452 NANO2
Datasheet
2,564In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 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 13.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .093ohms 452 NANO2
Datasheet
Product Comments
14,753In Stock
21,000Expected 07/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 93 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .093ohms 452 NANO2
Datasheet
1,068In Stock
5,000Expected 21/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 93 mOhms
Littelfuse Surface Mount Fuses 125VAC 2.5A .045ohms 452 NANO2
Datasheet
6,682In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 125VAC 3.5A .0224ohms 452 NANO2
Datasheet
7,958In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 3.5 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 22.4 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .0224ohms 452 NANO2
Datasheet
3,060In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 3.5 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 22.4 mOhms
Littelfuse Surface Mount Fuses 125VAC 1A .078ohms 453 NANO2
Datasheet
12,695In Stock
9,000Expected 26/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 1 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 125VAC 2A .0367ohms 453 NANO2
Datasheet
11,256In Stock
2,900Expected 01/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 2 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 36.7 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .0227ohms 453 NANO2
Datasheet
5,826In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 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 4A .016ohms 453 NANO2
Datasheet
2,806In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 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 125VAC 5A .0125ohms 453 NANO2
Datasheet
5,945In Stock
10,710On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 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 12.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 8A .0077ohms 453 NANO2
Datasheet
4,790In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 8 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 7.7 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .063ohms 453 NANO2
Datasheet
2,741In Stock
5,000Expected 01/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 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 10A .0056ohms 453 NANO2
Datasheet
11,707In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 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 65VAC 12A .0049ohms 453 NANO2
Datasheet
1,150In Stock
1,000Expected 07/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 12 A 65 VAC 65 VDC 100 A, 150 A, 400 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 4.9 mOhms
Littelfuse Surface Mount Fuses 65VAC 15A .0037ohms 453 NANO2
Datasheet
3,221In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

453 Surface Mount Ceramic Fuses Fast Blow 15 A 65 VAC 65 VDC 100 A, 150 A, 400 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 63 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 454 NANO2
Datasheet
1,477In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 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
Littelfuse Surface Mount Fuses 125VAC 0.5A .7ohms 454 NANO2
Datasheet
2,103In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 500 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 700 mOhms
Littelfuse Surface Mount Fuses 125VAC 1A .225ohms 454 NANO2
Datasheet
12,583In Stock
7,000Expected 12/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 1 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 225 mOhms
Littelfuse Surface Mount Fuses 125VAC 2A .0625ohms 454 NANO2
Datasheet
6,875In Stock
6,000Expected 01/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 2 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 62.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .034ohms 454 NANO2
Datasheet
6,106In Stock
4,000Expected 09/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow 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 34 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 454 NANO2
Datasheet
2,254In Stock
4,000Expected 07/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow 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 18.6 mOhms