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 (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
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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