Why Choose the Mersen D084022 High-Speed Miniature Fuse?
The Mersen D084022, catalogue reference MI5FA12.5V20, is a compact high-speed semiconductor miniature fuse designed to protect sensitive electronic components, semiconductor devices and control equipment against overcurrents and short circuits. Part of Mersen’s 5 × 20 mm FA/FB miniature fuse range, it provides very fast fault interruption in a space-saving cylindrical format.
Rated at 20 A and 125 V AC, the D084022 uses a high-speed FA operating characteristic to limit the energy passed into protected components during a fault. This makes it particularly suitable for converters, diodes, thyristors, triacs and measuring or control apparatus where conventional general-purpose fuses may not operate quickly enough.
The compact 5 × 20 mm cartridge is designed for clip mounting in a compatible fuse holder, allowing straightforward installation, inspection and replacement. Its very high breaking capacity and dependable Mersen construction support reliable protection in industrial electronics, power conversion assemblies and sensitive control circuits.
Key Advantages
- High-speed semiconductor protection fuse for sensitive electronic circuits.
- 20 A rated current for compatible power electronic equipment.
- 125 V AC rated voltage.
- Very fast FA characteristic helps minimise damaging let-through energy.
- Compact 5 × 20 mm cylindrical cartridge.
- Clip mounting enables straightforward installation and replacement.
- Suitable for semiconductor devices and measuring or control apparatus.
Key Features
- Mersen semiconductor miniature fuse range.
- MI5FA12.5V20 catalogue reference.
- 20 A rated current.
- 125 V AC rated voltage.
- High-speed FA operating characteristic.
- 5 × 20 mm fuse size.
- Clip-mounted cylindrical cartridge design.
- Non-indicating fuse construction.
- Very high breaking capacity for dependable fault interruption.
- RoHS, REACH and CE compliant product range.
Fast Protection for Sensitive Electronic Components
Power semiconductor devices can be damaged by fault currents that develop too rapidly for standard general-purpose fuses to interrupt effectively. The Mersen D084022 uses a very fast-acting characteristic to disconnect excessive current quickly and reduce the thermal and electrical stress placed on protected components.
Its compact cartridge format makes it suitable for equipment where installation space is limited. When installed in an appropriately rated 5 × 20 mm fuse holder, the clip-mounted design also allows the fuse to be inspected and replaced easily during maintenance.
Typical Applications
- Semiconductor device protection.
- Power converters and rectifier circuits.
- Diode, thyristor and triac protection.
- Measuring and control apparatus.
- Industrial electronic equipment.
- Automation and machine control circuits.
- Compact power electronic assemblies.
