Why Choose the Mersen W205041 High-Speed Miniature Fuse?
The Mersen W205041, catalogue number MI5FCP25V3.15, is a high-speed miniature semiconductor fuse designed to provide rapid overcurrent protection for sensitive electronic components, semiconductor devices and industrial control equipment. Part of Mersen's 5 × 20 mm FC 250 V axial lead fuse range, it combines fast fault interruption with convenient axial lead mounting for printed circuit boards and compact electronic assemblies.
With a rated current of 3.15 A and a rated operating voltage of 250 V AC, the W205041 provides reliable protection for power supplies, instrumentation, industrial electronics and automation equipment. Its fast FC characteristic helps minimise fault energy, reducing the risk of damage to valuable semiconductor components.
The fuse features a robust 5 × 20 mm ceramic body with axial leads for direct soldering onto printed circuit boards or connection within electronic assemblies. Its low I²t values, ceramic construction and UL recognition make it a dependable solution for demanding electronic protection applications.
Key Advantages
- Designed for semiconductor and sensitive electronic circuit protection.
- 3.15 A rated current for industrial electronic applications.
- 250 V AC rated voltage.
- Fast-acting FC characteristic provides rapid fault interruption.
- Compact 5 × 20 mm ceramic cartridge.
- Axial leads simplify PCB mounting and assembly.
- Low I²t values help minimise fault energy.
- RoHS, REACH and UKCA compliant.
Key Features
- Mersen 5 × 20 mm FC 250 V semiconductor fuse series.
- Catalogue number: MI5FCP25V3.15.
- 3.15 A rated current.
- 250 V AC rated voltage.
- Fast-acting FC operating characteristic.
- Ceramic fuse body with axial leads.
- Direct PCB solder mounting.
- Pre-arcing I²t: 2.5 A²s.
- Clearing I²t: 5 A²s.
- UL/CSA recognised construction.
Reliable Protection for Electronic Equipment
The Mersen W205041 is specifically designed to protect semiconductor devices and electronic assemblies where rapid fault interruption is essential. Its fast FC characteristic limits the energy released during overload and short-circuit conditions, helping to prevent damage to sensitive components.
The axial lead construction allows direct integration into printed circuit boards and electronic assemblies, while the ceramic body delivers excellent thermal stability and electrical insulation for reliable long-term performance.
Typical Applications
- Semiconductor protection.
- Industrial electronic equipment.
- Power supplies.
- Automation and control systems.
- Instrumentation equipment.
- Printed circuit board assemblies.
- Power conversion equipment.
- OEM electronic machinery.
