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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Voltage Rating AC
Voltage Rating DC
Interrupt Rating
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Maximum Operating Temperature
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Resistance
Littelfuse Surface Mount Fuses 125VAC 2.5A .045ohms 452 NANO2
Datasheet
5,963In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 45 mOhms
Littelfuse Surface Mount Fuses 125VAC 2.5A .045ohms 452 NANO2
Datasheet
4,116In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5,000

452 Surface Mount Ceramic Fuses Time Delay / Slow 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 45 mOhms
Littelfuse Surface Mount Fuses 125VAC 3.5A .0224ohms 452 NANO2
Datasheet
1,806In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 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 0.5A .7ohms 454 NANO2
Datasheet
3,139In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow 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 700 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.75A .36ohms 454 NANO2
Datasheet
1,699In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 750 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 360 mOhms
Littelfuse Surface Mount Fuses 125VAC 1A .225ohms 454 NANO2
Datasheet
3,689In Stock
2,000Expected 04/06/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 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 2A .0625ohms 454 NANO2
Datasheet
4,202In Stock
4,000Expected 10/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 2 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 62.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 3A .034ohms 454 NANO2
Datasheet
6,253In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 3 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 34 mOhms
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 454 NANO2
Datasheet
2,008In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow 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 18.6 mOhms
Littelfuse Surface Mount Fuses 72VAC 7A .0105ohms 454 NANO2
Datasheet
8,610In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 7 A 72 VAC 75 VDC 50 A at 72 VAC, 100 A at 75 VDC 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 454 NANO2
Datasheet
2,239In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 8 A 72 VAC 75 VDC 50 A at 72 VAC, 100 A at 75 VDC 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 454 NANO2
Datasheet
1,918In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 1.5 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 93 mOhms
Littelfuse Surface Mount Fuses 125VAC 2.5A .045ohms 454 NANO2
Datasheet
2,599In Stock
2,000Expected 17/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow 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 45 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 452 NANO2
Datasheet
87In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 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 1A .225ohms 452 NANO2
Datasheet
669In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

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 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 2A .0625ohms 452 NANO2
Datasheet
1,278In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 2 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 62.5 mOhms
Littelfuse Surface Mount Fuses 125VAC 5A .0136ohms 452 NANO2
Datasheet
974In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 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 72VAC 7A .0105ohms 452 NANO2
Datasheet
504In Stock
1,000Expected 27/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 7 A 72 VAC 60 VDC 50 A at 72 VAC, 50 A at 60 VDC 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
536In Stock
6,000Expected 24/03/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 8 A 72 VAC 60 VDC 50 A at 72 VAC, 50 A at 60 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 8.8 mOhms
Littelfuse Surface Mount Fuses 72VAC 8A .0088ohms 452 NANO2
Datasheet
9In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 8 A 72 VAC 60 VDC 50 A at 72 VAC, 50 A at 60 VDC 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
744In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 1.5 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 93 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 454 NANO2
Datasheet
1,080In 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 72VAC 12A .0061ohms 454 NANO2
Datasheet
1,103In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Ceramic Fuses Time Delay / Slow Blow 12 A 72 VAC 75 VDC 50 A at 72 VAC, 100 A at 75 VDC 6.1 mm x 2.69 mm - 55 C + 125 C Reel, Cut Tape, MouseReel 6.1 mOhms