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: 231
Select Image Part # Mfr. Description Datasheet Availability Pricing (USD) 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 3A .034ohms 452 NANO2 12,960In Stock
Cut Tape
$3.27
$2.76
$2.23
$1.91
Reel
$1.38
A tariff of 10% may be applied if shipping to the United States.
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 32VAC 5A .027ohms 458 NANO2 13,283In Stock
Cut Tape
$2.34
$2.16
$1.79
$1.64
Reel
$1.17
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500
458 Surface Mount Fuses Fast Blow 5 A 32 VAC 75 VDC 50 A, 50 A 3.18 mm x 1.58 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 27 mOhms
Littelfuse Surface Mount Fuses 350VAC 3.15A .0196ohms 885 NANO2 7,810In Stock
Cut Tape
$5.53
$5.15
$4.76
$3.91
Reel
$2.43
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500
885 Surface Mount Fuses Fast Blow 3.15 A 350 VAC 500 VDC 100 A, 100 A 10.86 mm x 4.78 mm - 40 C + 105 C Reel, Cut Tape, MouseReel 19.6 mOhms
Littelfuse Surface Mount Fuses 125VAC 1A .2516ohms 449 NANO2
7,863In Stock
Cut Tape
$2.83
$2.61
$2.17
$1.95
Reel
$1.44
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,000
449 Surface Mount Fuses Time Delay / Slow 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 251.6 mOhms
Littelfuse Surface Mount Fuses 250VAC 1A .107ohms 465 NANO2 7,057In Stock
Cut Tape
$2.11
$1.79
$1.58
$1.41
Reel
$0.978
A tariff of 10% may be applied if shipping to the United States.
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 350VAC 2.5A .0267ohms 885 NANO2 1,690In Stock
Cut Tape
$4.42
$3.96
$3.38
$3.12
Reel
$2.67
A tariff of 10% may be applied if shipping to the United States.
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 125VAC 0.25A .5765ohms 451 NANO2 5,127In Stock
Cut Tape
$2.13
$1.94
$1.84
$1.49
Reel
$0.887
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 5,000
451 Surface Mount Ceramic Fuses Fast Blow 250 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 576.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.513ohms 449 NANO2
5,603In Stock
Cut Tape
$3.14
$2.74
$2.59
$2.09
Reel
$1.25
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,000
449 Surface Mount Fuses Time Delay / Slow 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 1.513 Ohms
Littelfuse Surface Mount Fuses 125VAC 0.75A .408ohms 449 NANO2
1,095In Stock
Cut Tape
$2.93
$2.66
$2.57
$2.02
Reel
$1.32
A tariff of 10% may be applied if shipping to the United States.
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 250VAC 0.63A .157ohms 462 NANO2 1,243In Stock
Cut Tape
$3.29
$2.99
$2.89
$2.27
Reel
$1.41
A tariff of 10% may be applied if shipping to the United States.
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 250VAC 0.8A .13ohms 462 NANO2 1,290In Stock
Cut Tape
$3.29
$2.99
$2.89
$2.27
Reel
$1.41
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500
462 Surface Mount Fuses Time Delay / Slow Blow 800 mA 250 VAC 250 VDC 150 A, 150 A 10.5 mm x 4.5 mm - 40 C + 85 C Reel, Cut Tape, MouseReel 130 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .063ohms 451 NANO2 4,705In Stock
Cut Tape
$2.13
$1.94
$1.84
$1.49
Reel
$0.887
A tariff of 10% may be applied if shipping to the United States.
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 250VAC 4A .016ohms 465 NANO2 3,422In Stock
Cut Tape
$2.33
$2.12
$1.97
$1.32
Reel
$0.967
A tariff of 10% may be applied if shipping to the United States.
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 0.75A .275ohms 443 NANO2 4,040In Stock
Cut Tape
$2.05
$1.51
$1.35
$1.22
Reel
$0.865
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500
443 Surface Mount Fuses Time Delay / Slow Blow 750 mA 250 VAC 125 VDC 50 A, 100 A 10.08 mm x 3.05 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 275 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 452 NANO2 4,509In Stock
Cut Tape
$2.71
$2.33
$2.02
$1.86
Reel
$1.20
A tariff of 10% may be applied if shipping to the United States.
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 125VAC 5A .0136ohms 452 NANO2 2,439In Stock
Cut Tape
$2.64
$2.42
$2.15
$1.94
Reel
$1.21
A tariff of 10% may be applied if shipping to the United States.
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 350VAC 1.25A .063ohms 885 NANO2 951In Stock
Cut Tape
$5.53
$5.15
$4.62
$3.91
Reel
$2.43
A tariff of 10% may be applied if shipping to the United States.
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 10A .0056ohms 451 NANO2 4,347In Stock
Cut Tape
$2.84
$2.60
$2.29
$2.06
Reel
$1.41
A tariff of 10% may be applied if shipping to the United States.
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 125VAC 0.375A 1.2ohms 452 NANO2 5,977In Stock
Cut Tape
$2.82
$2.63
$2.49
$2.02
Reel
$1.25
A tariff of 10% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 5,000
452 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 1.5A .093ohms 452 NANO2 5,770In Stock
Cut Tape
$2.82
$2.63
$2.50
$2.02
Reel
$1.25
A tariff of 10% may be applied if shipping to the United States.
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 48VAC 1.6A .092ohms 458 NANO2 1,846In Stock
Cut Tape
$2.42
$2.24
$2.13
$1.72
Reel
$1.02
A tariff of 10% may be applied if shipping to the United States.
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 FUSE 125V V/FA NANO2 W/ Au Caps RoHS 20A 1,874In Stock
Cut Tape
$7.25
$6.69
$6.44
$4.95
Reel
$3.89
A tariff of 10% may be applied if shipping to the United States.
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 0.08A 4.47ohms 448 NANO2
62In Stock
1,000Expected 11/30/2026
Cut Tape
$4.60
$4.29
$4.14
$3.25
Reel
$2.32
A tariff of 10% may be applied if shipping to the United States.
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 3.15A .0215ohms 453 NANO2 949In Stock
Cut Tape
$1.93
$1.74
$1.65
$1.33
Reel
$0.795
A tariff of 10% may be applied if shipping to the United States.
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 505In Stock
1,500Expected 11/10/2026
Cut Tape
$2.29
$2.11
$1.75
$1.58
Reel
$1.11
A tariff of 10% may be applied if shipping to the United States.
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