251/253 Series PICO® II Very Fast-Acting Fuses

Littelfuse 251/253 Series PICO® II Very Fast-Acting Fuses are designed to meet an extensive array of performance characteristics in a space-saving subminiature package. These fast-acting fuses operate at -55°C to 125°C temperature range and at 0.062A to 15A current rating range. The 251/253 series fuses are small and feature low-temperature re-rating. These fuses are ideal for flat–panel display TVs, LCD monitors, LCD backlight inverters, office machines, power supplies, audio/video systems, lighting systems, and medical equipment.

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Voltage Rating DC
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Fuse Size/Group
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Maximum Operating Temperature
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Packaging
Littelfuse Fuses with Leads - Through Hole 125V 1A
Datasheet
19,161In Stock
8,000Expected 24-04-2026
Min.: 1
Mult.: 1

251 PCB Mount Fuses 1 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 128.000006 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 1A
Datasheet
14,975In Stock
Min.: 1
Mult.: 1
Reel: 5,000

251 PCB Mount Fuses 1 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II - 55 C + 125 C 128.000006 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 125V 5A
Datasheet
4,298In Stock
Min.: 1
Mult.: 1
Reel: 5,000

251 PCB Mount Fuses 5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II - 55 C + 125 C 15.5 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 125V 7A
Datasheet
3,504In Stock
5,000Expected 14-04-2026
Min.: 1
Mult.: 1
Reel: 5,000

251 PCB Mount Fuses 7 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II - 55 C + 125 C 10.5 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 125V 10A
Datasheet
5,106In Stock
11,900On Order
Min.: 1
Mult.: 1

251 PCB Mount Fuses 10 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 7.05 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 15A 32V
Datasheet
5,987In Stock
Min.: 1
Mult.: 1
Reel: 1,000

251 PCB Mount Fuses 15 A 32 VAC Fast Blow Leaded Fuses 32 VDC 50 A at 32 VAC, 300 A at 32 VDC Axial PICO II - 55 C + 125 C 35.999998 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 32V 15A
Datasheet
3,867In Stock
5,000Expected 09-07-2026
Min.: 1
Mult.: 1

251 PCB Mount Fuses 15 A 32 VAC Fast Blow Leaded Fuses 32 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 35.999998 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 32V 15A
Datasheet
3,445In Stock
Min.: 1
Mult.: 1
Reel: 5,000

251 PCB Mount Fuses 15 A 32 VAC Fast Blow Leaded Fuses 32 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 35.999998 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 125V .500A PICO II FA
Datasheet
147In Stock
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 500 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 280.000001 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .63A
Datasheet
1,612In Stock
Min.: 1
Mult.: 1
Reel: 1,000

251 PCB Mount Fuses 630 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A Axial PICO II 205 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .63A
Datasheet
180In Stock
Min.: 1
Mult.: 1
Reel: 1,000

251 PCB Mount Fuses 630 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 50 A at 125 VAC, 300 A at 125 VDC Axial PICO II 205 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 125V .63A
Datasheet
855In Stock
Min.: 1
Mult.: 1

251 PCB Mount Fuses 630 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 50 A at 125 VAC, 300 A at 125 VDC Axial PICO II 205 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .750A PICO II FA
Datasheet
151In Stock
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II 174.999997 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .75A
Datasheet
486In Stock
4,000Expected 30-04-2026
Min.: 1
Mult.: 1
Reel: 1,000
251 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 174.999997 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V750mA PICO II FA
Datasheet
851In Stock
Min.: 1
Mult.: 1
Reel: 5,000

251 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 174.999997 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 1A PICO II FA
Datasheet
316In Stock
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 1 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II 128.000006 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 1A PICO II Fast Acting
Datasheet
1,362In Stock
Min.: 1
Mult.: 1
Reel: 2,000

251 PCB Mount Fuses 1 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO - 55 C + 125 C 128.000006 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 2A PICO II FA
Datasheet
321In Stock
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II 47.3 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 2A
Datasheet
28In Stock
4,000On Order
Min.: 1
Mult.: 1
Reel: 1,000
251 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 47.3 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 3A PICO II FA
Datasheet
302In Stock
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 3 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 28.999999 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 3A
Datasheet
1,840In Stock
Min.: 1
Mult.: 1
Reel: 1,000

251 PCB Mount Fuses 3 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 28.999999 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 4A PICO II FA
Datasheet
418In Stock
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 20.400001 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 4A
Datasheet
176In Stock
2,000Expected 20-03-2026
Min.: 1
Mult.: 1
Reel: 1,000

251 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses 50 A at 125 VAC, 300 A at 125 VDC Axial PICO II - 55 C + 125 C 20.400001 mOhms Reel, Cut Tape
Littelfuse Fuses with Leads - Through Hole 125V 5A PICO II FA
Datasheet
357In Stock
300Expected 13-03-2026
Min.: 1
Mult.: 1
Reel: 100

251 PCB Mount Fuses 5 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 32 VDC Axial PICO II - 55 C + 125 C 15.5 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 5A PICO II Fast Acting
Datasheet
30In Stock
Min.: 1
Mult.: 1

251 PCB Mount Fuses 5 A 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II - 55 C + 125 C 15.5 mOhms Bulk