Why Choose the Mersen C208221 High-Speed Miniature Fuse?
The Mersen C208221, catalogue reference MI6FAP69V0.5, is a compact high-speed semiconductor fuse designed to protect sensitive electronic components and power conversion circuits against damaging overcurrents and short circuits. It belongs to Mersen’s miniature semiconductor fuse range and combines rapid fault interruption with a space-saving cylindrical format.
Rated at 0.5 A and 690 V AC, the C208221 is suitable for low-current circuits operating at relatively high voltages. Its fast-acting FA characteristic helps limit the electrical energy passed to semiconductor components during a fault, reducing the risk of damage to diodes, thyristors, triacs, rectifiers and other sensitive devices.
The fuse features a compact 6.3 × 32 mm ceramic body with axial leads, allowing it to be soldered directly onto printed circuit boards or incorporated into compact electronic assemblies. This makes the Mersen C208221 a practical solution for industrial electronics, automation equipment and power conversion systems where reliable semiconductor protection is required.
Key Advantages
- High-speed semiconductor protection fuse for sensitive electronic circuits.
- 0.5 A rated current for low-current protection applications.
- 690 V AC voltage rating for high-voltage electronic equipment.
- Fast FA operating characteristic helps minimise damaging let-through energy.
- Compact 6.3 × 32 mm cylindrical fuse format.
- Axial leads support direct PCB mounting and compact installation.
- Ceramic body provides dependable performance during electrical faults.
Key Features
- Mersen semiconductor miniature fuse range.
- MI6FAP69V0.5 catalogue reference.
- 0.5 A rated current.
- 690 V AC rated voltage.
- High-speed FA fuse characteristic.
- 6.3 × 32 mm cylindrical body.
- Axial lead configuration for PCB installation.
- Designed for semiconductor and electronic circuit protection.
- Compact construction for space-restricted equipment.
- Suitable for industrial power electronics and automation systems.
Fast Protection for Sensitive Semiconductor Circuits
Semiconductor components can be damaged by overcurrent events that develop too quickly for conventional general-purpose fuses to interrupt effectively. The Mersen C208221 uses a high-speed FA characteristic to disconnect fault currents rapidly and reduce the thermal and electrical stress applied to protected components.
Its axial leads allow the fuse to be installed directly onto a printed circuit board, providing a secure connection while reducing the space required for a separate fuse holder. This makes it particularly suitable for compact electronic assemblies, industrial control systems and power conversion equipment.
Typical Applications
- Semiconductor device protection.
- Printed circuit boards and electronic assemblies.
- Power converters and rectifier circuits.
- Diode, thyristor and triac protection.
- Industrial power supplies.
- Automation and control equipment.
- High-voltage, low-current electronic circuits.
