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MERSEN FUSE 250V SA 0,25 A 5.20 MI5SA25V0,25
Mersen Q084102 MI5SA25V0.25 semiconductor miniature fuse rated 0.25 A and 250 V AC, featuring a medium time-lag SA characteristic in a compact 5 x 20 mm clip-mounted format.
£2.37
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.
Technical Specifications
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| Current | 0.25 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | MI5 SA/SB 125–250 V Semiconductor Miniature Fuses | |
| Model | MI5SA25V0.25 | |
| Part number | Q084102 | |
| Product type | Semiconductor miniature fuse | |
| Rated current | 0.25 A | |
| Rated voltage | 250 V AC | |
| Electrical system | AC | |
| Operating characteristic | Medium time-lag SA | |
| Fuse size | 5 × 20 mm | |
| Mounting type | Clip mounting | |
| Clearing I²t at rated voltage | 0.045 A²s | |
| Indication system | None | |
| Product weight | Approx. 0.0012 kg | |
| EAN / UPC | 3605340060287 | |
| Compliance | CE, RoHS, REACH and UKCA |
Frequently Asked Questions
What is the Mersen Q084102 used for?
The Q084102 protects sensitive semiconductor devices, electronic equipment and industrial control circuits against sustained overloads and short-circuit faults.
What current rating does the Q084102 have?
The Mersen Q084102 has a rated current of 0.25 A.
What voltage is this fuse rated for?
This semiconductor miniature fuse is rated for operation at up to 250 V AC.
Is the Mersen Q084102 a fast-acting fuse?
No. It has a medium time-lag SA characteristic, enabling it to tolerate brief inrush currents while protecting against sustained faults.
How is the Q084102 installed?
The fuse has a compact 5 × 20 mm cylindrical format and is designed for clip mounting in a compatible miniature fuse holder.
Trusted by Electronics and Automation Engineers
Mersen semiconductor miniature fuses are used by equipment manufacturers, control-panel builders and maintenance engineers to provide reliable protection for sensitive electronic circuits and industrial control systems.
