Why Choose the Mersen D078870 Medium Time-Lag Miniature Fuse?
The Mersen D078870, catalogue reference MI6SA50V0.2, is a compact semiconductor miniature fuse designed to protect sensitive electronic circuits and equipment against damaging overcurrents. Part of Mersen’s 6.3 × 32 mm SA fuse range, it combines dependable circuit protection with a medium time-lag characteristic that tolerates brief current surges without unnecessary operation.
Rated at 0.2 A and 500 V AC, the D078870 is particularly suitable for low-current electronic and semiconductor applications. Its SA operating characteristic allows short-duration inrush or transient currents to pass whilst still providing reliable protection against sustained overloads and fault conditions.
The compact 6.3 × 32 mm cylindrical format is designed for clip mounting within compatible fuse holders and equipment assemblies. With a very high breaking capacity, low clearing energy and dependable Mersen construction, the D078870 provides effective protection for industrial electronics, power supplies, control circuits and sensitive electrical equipment.
Key Advantages
- Medium time-lag semiconductor miniature fuse for sensitive circuits.
- 0.2 A current rating for low-current electronic applications.
- 500 V AC voltage rating for demanding electrical equipment.
- Allows short-term inrush and transient currents without nuisance operation.
- Compact 6.3 × 32 mm cylindrical format.
- Very high breaking capacity for dependable fault interruption.
- Clip-mounted design enables straightforward installation and replacement.
Key Features
- Mersen semiconductor miniature fuse range.
- MI6SA50V0.2 catalogue reference.
- 0.2 A rated current.
- 500 V AC rated voltage.
- Medium time-lag SA operating characteristic.
- 6.3 × 32 mm fuse size.
- Clip mounting for compatible fuse holders.
- Low clearing I²t helps limit fault energy.
- Non-indicating fuse construction.
- Suitable for circuits with inrush or transient current conditions.
Reliable Protection for Circuits with Transient Currents
Electrical and electronic circuits can experience brief inrush currents during start-up, switching or capacitor charging. A fuse that operates too quickly may disconnect the circuit unnecessarily. The medium time-lag characteristic of the Mersen D078870 allows these temporary current peaks to pass whilst maintaining protection against sustained overloads and short circuits.
The fuse’s low clearing I²t limits the electrical energy released during fault interruption, helping protect sensitive electronic components. Its compact clip-mounted design also makes inspection and replacement straightforward when installed in an appropriately rated 6.3 × 32 mm fuse holder.
Typical Applications
- Semiconductor and electronic circuit protection.
- Industrial power supplies.
- Automation and control equipment.
- Circuits with inrush or transient current conditions.
- Power conversion and rectifier equipment.
- Instrumentation and monitoring systems.
- Low-current industrial electronic assemblies.
