452/454 Series SMT Fuses

Littelfuse 452/454 Series SMT Fuses are part of the NANO2® Slo-Blo® series fuse family, which features enhanced inrush withstand characteristics over existing NANO2 Fast-Acting fuses. This "time delay" fuse design accommodates inrush currents that normally cause a fast-acting fuse to open, helping solve the nuisance “opening” problem. The compact 452/454 series provides low-temperature re-rating and contains models in a wide range of current ratings (from 0.375A to 12A). These Slo-Blo fuses can operate between -55°C and 125°C temperatures. Littelfuse 452/454 series fuses are ideal for game consoles, industrial equipment, computer servers, laptops, power supplies, and can serve as the AC line fuse in LED lighting applications.

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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
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Resistance
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 452 NANO2
Datasheet
4,854In 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 125VAC 5A .0136ohms 454 NANO2
Datasheet
7,635In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

454 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 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 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 10A
Datasheet
13,250In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Fuses Time Delay / Slow Blow 10 A 75 VDC 50 A, 50 A, 100 A NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 8 mOhms
Littelfuse Surface Mount Fuses 6.3A
Datasheet
1,847In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Fuses Time Delay / Slow Blow 75 VDC 50 A, 50 A, 100 A NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 12.3 mOhms
Littelfuse Surface Mount Fuses 10A
Datasheet
4,572In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

454 Surface Mount Fuses Time Delay / Slow Blow 10 A 75 VDC 50 A, 50 A, 100 A NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 8 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .034ohms 452 NANO2
Datasheet
26,963In Stock
20,000Expected 03-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 5A .0136ohms 452 NANO2
Datasheet
57,438In Stock
33,000Expected 29-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 72VAC 7A .0105ohms 452 NANO2
Datasheet
8,900In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 7 A 72 VAC 60 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 10.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2
Datasheet
6,237In Stock
MouseReel Available
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 0.5A .7ohms 452 NANO2
Datasheet
6,486In Stock
7,000Expected 07-01-2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 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 0.75A .36ohms 452 NANO2
Datasheet
1,634In Stock
6,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 1A .225ohms 452 NANO2
Datasheet
18,168In Stock
14,000Expected 22-09-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 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 1A .225ohms 452 NANO2
Datasheet
4,244In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 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 452 NANO2
Datasheet
12,363In Stock
30,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 2A .0625ohms 452 NANO2
Datasheet
4,768In 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
1,270In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 3A .034ohms 452 NANO2
Datasheet
3,418In 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
10,923In Stock
15,000Expected 02-11-2026
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
2,554In 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 72VAC 7A .0105ohms 452 NANO2
Datasheet
2,205In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 7 A 72 VAC 60 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 10.5 mOhms
Littelfuse Surface Mount Fuses 72VAC 8A .0088ohms 452 NANO2
Datasheet
4,931In Stock
3,000Expected 06-10-2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 8 A 72 VAC 60 VDC 50 A, 50 A 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 8.8 mOhms
Littelfuse Surface Mount Fuses 125VAC 1.5A .093ohms 452 NANO2
Datasheet
Product Comments
14,727In Stock
21,000On Order
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