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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Description Datasheet Availability Pricing (CAD) 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 3.5A .0224ohms 454 NANO2
Datasheet
402In Stock
1,000Expected 2026-03-13
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 2A .0625ohms 452 NANO2
Datasheet
25,968On Order
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 4A .0186ohms 452 NANO2
Datasheet
4,980Expected 2026-05-11
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 72VAC 12A .0061ohms 452 NANO2
Datasheet
9,984Expected 2026-03-24
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Surface Mount Ceramic Fuses Time Delay / Slow Blow 12 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 6.1 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.5A .7ohms 452 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Reel, Cut Tape, MouseReel
Littelfuse Surface Mount Fuses 125VAC 0.75A .36ohms 452 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

452 Reel, Cut Tape, MouseReel
Littelfuse Surface Mount Fuses 72VAC 12A .0061ohms 452 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1,000
Mult.: 1,000
Reel: 1,000

452 Reel
Littelfuse Surface Mount Fuses 125VAC 2.5A .045ohms 452 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1,000
Mult.: 1,000
Reel: 1,000

452 Reel
Littelfuse Surface Mount Fuses 125VAC 3.5A .0224ohms 452 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1,000
Mult.: 1,000
Reel: 1,000

452 Reel
Littelfuse Surface Mount Fuses 6.3A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

452 Surface Mount Fuses Time Delay / Slow Blow 75 VDC 50 A at 72 VAC, 50 A at 60 VDC, 100 A at 75 VDC NANO - 55 C + 125 C Reel 12.3 mOhms
Littelfuse Surface Mount Fuses 125VAC 0.375A 1.2ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 375 mA 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 0.5A .7ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 500 mA 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 0.75A .36ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 750 mA 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 1A .225ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 1 A 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 2A .0625ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 2 A 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 3A .034ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 3 A 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 4A .0186ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 4 A 125 VAC 2410 (6125 metric) Reel, Cut Tape, MouseReel
Littelfuse Surface Mount Fuses 72VAC 7A .0105ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 7 A 72 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 72VAC 8A .0088ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 8 A 72 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 1.5A .093ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 1.5 A 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 10A
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Fuses Time Delay / Slow Blow 10 A 75 VDC 50 A at 72 VAC, 50 A at 60 VDC, 100 A at 75 VDC NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 8 mOhms
Littelfuse Surface Mount Fuses 72VAC 12A .0061ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 12 A 72 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 2.5A .045ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 2.5 A 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 125VAC 3.5A .0224ohms 454 NANO2
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

454 Surface Mount Fuses Time Delay / Slow Blow 3.5 A 125 VAC 2410 (6125 metric) Reel
Littelfuse Surface Mount Fuses 6.3A
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

454 Surface Mount Fuses Time Delay / Slow Blow 75 VDC 50 A at 72 VAC, 50 A at 60 VDC, 100 A at 75 VDC NANO - 55 C + 125 C Reel, Cut Tape, MouseReel 12.3 mOhms