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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Qty. RoHS ECAD Model Series
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Voltage Rating AC
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Voltage Rating DC
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Packaging
Littelfuse Fuses with Leads - Through Hole 125V .062A FM Fast Acting
Datasheet
60Expected 24/03/2026
Min.: 1
Mult.: 1
No
253 PCB Mount Fuses 62 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II - 55 C + 125 C 7 Ohms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .500A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 500 mA 125 VAC Fast Blow Leaded Fuses Axial PICO II 280.000001 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .500A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 500 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 280.000001 mOhms Reel
Littelfuse Fuses with Leads - Through Hole 125V .500A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 500 mA 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 280.000001 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .500A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

251 PCB Mount Fuses 500 mA 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II - 55 C + 125 C 280.000001 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V .630A PICO II FA
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 630 mA 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II 205 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .630A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 630 mA 125 VAC Fast Blow Leaded Fuses Axial PICO II 205 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .750A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses Axial PICO II 174.999997 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V .750A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

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 Reel
Littelfuse Fuses with Leads - Through Hole 125V .750A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

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 .750A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

251 PCB Mount Fuses 750 mA 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II - 55 C + 125 C 174.999997 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 1A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 1 A 125 VAC Fast Blow Leaded Fuses Axial PICO II 128.000006 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 1A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 1 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 128.000006 mOhms Reel
Littelfuse Fuses with Leads - Through Hole 125V 2A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses Axial PICO II 47.3 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 2A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 47.3 mOhms Reel
Littelfuse Fuses with Leads - Through Hole 125V 2A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

251 PCB Mount Fuses 2 A 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II - 55 C + 125 C 47.3 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 3A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 3 A 125 VAC Fast Blow Leaded Fuses Axial PICO II 28.999999 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 3A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 3 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 28.999999 mOhms Reel
Littelfuse Fuses with Leads - Through Hole 125V 3A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 3 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 28.999999 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 3A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

251 PCB Mount Fuses 3 A 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II - 55 C + 125 C 28.999999 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 4A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses Axial PICO II 20.400001 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 4A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 20.400001 mOhms Reel
Littelfuse Fuses with Leads - Through Hole 125V 4A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2,000
Mult.: 2,000
Reel: 2,000

251 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses 125 VDC 300 A at 125 VDC Axial PICO II 20.400001 mOhms Ammo Pack
Littelfuse Fuses with Leads - Through Hole 125V 4A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1
Mult.: 1

251 PCB Mount Fuses 4 A 125 VAC Fast Blow Leaded Fuses 125 VDC Axial PICO II - 55 C + 125 C 20.400001 mOhms Bulk
Littelfuse Fuses with Leads - Through Hole 125V 5A PICO II Fast Acting
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

251 PCB Mount Fuses 5 A 125 VAC Fast Blow Leaded Fuses Axial PICO II 15.5 mOhms Ammo Pack