Why Choose the Mersen Q078904 MI6SA40V0.2 Semiconductor Miniature Fuse?
The Mersen Q078904, catalogue reference MI6SA40V0.2, is a compact semiconductor miniature fuse designed to protect sensitive electronic components, control equipment and power-electronic circuits against damaging overcurrents. It forms part of Mersen's trusted MI6 SA 400 V fuse series.
Rated at 0.2 A and 400 V AC, this fuse features a medium time-lag SA operating characteristic. This characteristic allows the fuse to withstand brief, non-damaging current surges while still providing dependable interruption of sustained overloads and short-circuit faults.
The Mersen Q078904 uses a compact 6.3 × 32 mm cylindrical format designed for clip mounting within a compatible fuse holder. Its very high breaking capacity and controlled time-lag performance make it suitable for industrial electronics, semiconductor circuits and control apparatus where both surge tolerance and reliable fault protection are required.
Key Advantages
- Reliable semiconductor and electronic circuit protection.
- 0.2 A current rating for sensitive low-current applications.
- 400 V AC voltage rating for industrial electronic systems.
- Medium time-lag characteristic tolerates brief current surges.
- Very high breaking capacity supports dependable fault interruption.
- Compact 6.3 × 32 mm construction saves installation space.
Key Features
- Mersen MI6 SA semiconductor miniature fuse series.
- Catalogue number: MI6SA40V0.2.
- Manufacturer part number: Q078904.
- Rated current: 0.2 A.
- Rated voltage: 400 V AC.
- Medium time-lag SA operating characteristic.
- Very high breaking capacity.
- Compact cylindrical cartridge construction.
- Designed for clip mounting in a compatible fuse holder.
- Suitable for sensitive semiconductor and control circuits.
Reliable Protection for Sensitive Electronic Equipment
Semiconductor devices and electronic control components can be damaged by relatively small overcurrents. The Mersen Q078904 is designed to disconnect sustained electrical faults while allowing short-duration surges that may occur during normal equipment start-up or switching.
Its medium time-lag SA characteristic provides a balance between surge tolerance and effective fault protection. This helps reduce nuisance fuse operation while protecting sensitive circuits used in industrial controls, power supplies and semiconductor-based equipment.
Typical Applications
- Semiconductor protection circuits.
- Industrial control equipment.
- Electronic power supplies.
- Control and signalling apparatus.
- Power-electronic assemblies.
- Automation and monitoring systems.
- Test and measurement equipment.
- OEM electronic machinery.
