Why Choose the Mersen J084004 High-Speed Miniature Fuse?
The Mersen J084004, also identified by the catalogue number MI5FA25V1, is a compact high-speed semiconductor miniature fuse designed to protect sensitive electronic components, semiconductor devices and measuring equipment against damaging overcurrents and short circuits. It forms part of Mersen’s FA and FB range of 5 × 20 mm miniature fuse-links.
Its very fast-acting FA characteristic interrupts excessive current rapidly, helping to limit the electrical and thermal energy transferred to protected components. This fast response makes the J084004 suitable for applications where conventional general-purpose fuses may not operate quickly enough to safeguard diodes, thyristors, triacs and other sensitive semiconductor devices.
With a rated current of 1 A, a rated voltage of 250 V AC and a compact 5 × 20 mm ceramic cartridge format, the J084004 provides dependable circuit protection in space-restricted equipment. Its ferrule terminals enable straightforward clip mounting in compatible fuse holders.
Key Advantages
- High-speed FA characteristic for semiconductor protection.
- 1 A rated current for sensitive electronic circuits.
- 250 V AC voltage rating for compatible equipment.
- Compact 5 × 20 mm cylindrical cartridge format.
- 10 kA minimum interrupting rating for reliable fault clearance.
- Clip-mounted construction allows convenient installation and replacement.
Key Features
- Mersen FA semiconductor miniature fuse series.
- Catalogue number: MI5FA25V1.
- 1 A rated current.
- 250 V AC rated voltage.
- High-speed, very fast-acting fuse characteristic.
- Ceramic cylindrical cartridge body.
- Ferrule terminals for compatible fuse clips and holders.
- RoHS-compliant construction.
Fast Protection for Sensitive Electronic Components
Semiconductor devices can be damaged rapidly when exposed to excessive current. The Mersen J084004 uses a high-speed fuse element to disconnect the circuit quickly, helping to limit fault energy and reduce the risk of damage to protected electronic components.
Its compact ceramic cartridge fits compatible 5 × 20 mm fuse clips and holders, allowing straightforward installation in control equipment, converters, measuring systems and electronic assemblies. The replaceable clip-mounted design also supports efficient inspection and maintenance.
Typical Applications
- Semiconductor converter protection.
- Diode, thyristor and triac circuits.
- Measuring and control apparatus.
- Industrial automation equipment.
- Electronic power supplies and control modules.
- Instrumentation and electronic assemblies.
