Why Choose the Mersen Q084102 MI5SA25V0.25 Semiconductor Miniature Fuse?
The Mersen Q084102, catalogue reference MI5SA25V0.25, is a compact semiconductor miniature fuse designed to provide reliable overcurrent protection for sensitive electronic components, control apparatus and industrial equipment. It forms part of Mersen's MI5 SA/SB 125–250 V miniature fuse range.
Rated at 0.25 A and 250 V AC, the Q084102 features a medium time-lag SA operating characteristic. This allows the fuse to tolerate brief inrush and transient currents while still providing dependable interruption of sustained overloads and short-circuit faults.
Its compact 5 × 20 mm cylindrical format is designed for clip mounting within a compatible miniature fuse holder. With controlled time-delay performance, low clearing energy and RoHS-compliant construction, the Mersen Q084102 is suitable for industrial electronics, instrumentation, automation equipment and semiconductor-based control circuits.
Key Advantages
- Reliable protection for sensitive semiconductor and electronic circuits.
- 0.25 A current rating for low-current applications.
- 250 V AC voltage rating for industrial electronic equipment.
- Medium time-lag characteristic withstands brief inrush currents.
- Low clearing I²t helps limit fault energy within protected circuits.
- Compact 5 × 20 mm design for space-conscious installations.
Key Features
- Mersen MI5 SA/SB semiconductor miniature fuse series.
- Catalogue reference: MI5SA25V0.25.
- Manufacturer part number: Q084102.
- Rated current: 0.25 A.
- Rated voltage: 250 V AC.
- Medium time-lag SA operating characteristic.
- Compact cylindrical cartridge construction.
- Designed for clip mounting in a compatible fuse holder.
- No integrated indication system.
- RoHS and REACH compliant construction.
Reliable Protection for Circuits with Inrush Currents
Electronic equipment can produce temporary inrush or transient currents when energised. A medium time-lag fuse allows these short-duration currents to pass without unnecessary operation while continuing to protect the circuit against persistent overloads and short circuits.
The Mersen Q084102 combines this surge tolerance with controlled fault-clearing performance. It is therefore well suited to sensitive control and semiconductor circuits where both reliable protection and resistance to nuisance fuse operation are important.
Typical Applications
- Semiconductor protection circuits.
- Industrial control equipment.
- Electronic power supplies.
- Instrumentation and monitoring systems.
- Automation and signalling equipment.
- Circuits with inrush or transient current conditions.
- Power-electronic assemblies.
- OEM electronic equipment.
