Overview
The Littelfuse R251005T1 is a 5A, 125V very fast-acting fuse from the PICO II 251 series. The PICO II Very Fast-Acting Fuse is designed to meet an extensive array of performance characteristics in a space-saving subminiature package. Very fast-acting fuse designed to meet an extensive array of performance characteristics in a space-saving subminiature package. This unit features an axial lead configuration, making it suitable for through-hole PCB mounting in electronic ballasts, LCDs, networking equipment, power supplies, and other circuit protection applications where rapid overcurrent disconnection is critical.
Key Features
- Very fast-acting response for immediate circuit protection
- RoHS compliant and halogen-free available
- Subminiature axial lead design for standard PCB mounting
- Wide current rating range (62 mA to 15 A) in the 251 series family
- Wide operating temperature range with low temperature rerating
Technical Specifications
- Ampere Rating: 5A
- Voltage Rating: 125V
- Speed: Very Fast-Acting
- Lead Configuration: Axial
- Series: PICO II 251
- Interrupting Rating: 300A @ 125VDC (per series specifications)
- Mounting Type: Through-hole PCB
- Agency Approvals: RoHS compliant
Typical Applications
PICO fuses provide overcurrent protection in electronic ballast, LCDs, networking equipment, and power supplies. The fast-acting response makes this fuse ideal for sensitive electronic circuits requiring immediate disconnection during fault conditions. Common uses include consumer electronics, industrial control circuits, equipment protection modules, and anywhere subminiature fuse protection is required.
Compatibility & Replacements
Compatible With
- Standard through-hole PCB fuse holders for .125″ diameter axial lead fuses
- Any circuit designed for 5A, 125V fuse protection
- Electronic equipment requiring fast-acting overcurrent protection
- Power supplies and circuit protection modules
Replaces / Drop-In Replacement For
- Littelfuse 0251005 (industry equivalent designation)
- Other PICO II 251 series 5A fuses with matching lead configuration and voltage rating
- Any legacy 5A, 125V axial lead very fast-acting fuse rated for the same application
Works With
- Standard PCB fuse holders and sockets accepting .125″ axial leads
- Industrial and commercial power supplies
- Electronic ballasts and lighting equipment
- Network and telecommunications equipment
- Any overcurrent protection circuit designed for 5A, 125V operation
