MERSEN FUSE 250V FB 0,05A 5.20 AL 250V FB 0.05A 5X20 FUSE,

MERSEN FUSE 250V FB 0,05A 5.20 AL 250V FB 0.05A 5X20 FUSE,

Mersen S206901 high-speed semiconductor miniature fuse with a 0.05 A current rating, 250 V AC voltage rating, 5 x 20 mm body and axial leads for direct PCB mounting.

SKU: S206901Alt SKU: 250V FB 0.05A 5X20 FUSE,MPN: S206901
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List Price £7.87 ex VAT
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Sold in packs of 200

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Why Choose the Mersen S206901 High-Speed Miniature Fuse?

The Mersen S206901 is a compact and reliable high-speed semiconductor miniature fuse designed to protect sensitive electronic components and semiconductor devices against damaging overcurrents and short circuits. As part of the Mersen MI5 FA/FB 250V AL series, it delivers very fast fault interruption for demanding electronic and industrial applications.

With a rated current of 0.05 A and a rated voltage of 250 V AC, the S206901 is suitable for low-current circuits where rapid protection is essential. Its high-speed FB operating characteristic helps minimise the electrical and thermal energy passed to protected components during a fault, reducing the risk of equipment damage.

The fuse features a compact 5 × 20 mm body with axial leads, allowing it to be soldered directly onto printed circuit boards or connected to other electronic components. Its combination of very fast operation, low current rating and direct PCB mounting makes it suitable for instrumentation, control electronics, power supplies and semiconductor protection circuits.

Key Advantages

  • High-speed FB characteristic for rapid semiconductor protection.
  • 0.05 A rated current for sensitive low-current circuits.
  • 250 V AC rated voltage for electronic and industrial equipment.
  • Compact 5 × 20 mm miniature fuse format.
  • Axial leads support direct PCB soldering and component integration.
  • Very high breaking capacity helps protect valuable electronic components.

Key Features

  • Mersen MI5 FA/FB 250V AL series.
  • 0.05 A nominal current rating.
  • 250 V AC IEC rated voltage.
  • Very fast-acting FB operating characteristic.
  • Compact 5 × 20 mm miniature fuse body.
  • Axial lead mounting for direct PCB integration.
  • Designed for semiconductor and sensitive electronic circuit protection.
  • RoHS and UKCA compliant.

Rapid Protection for Sensitive Electronic Circuits

High-speed fuses are designed to interrupt fault currents before excessive thermal energy can damage semiconductor devices and sensitive electronic components. The Mersen S206901 provides a very rapid response, helping improve equipment reliability and reduce the risk of costly component failure.

Its axial lead construction enables secure installation directly onto a printed circuit board. This makes the fuse particularly suitable for compact electronic assemblies where dependable protection and efficient use of installation space are essential.

Typical Applications

  • Semiconductor protection circuits.
  • Printed circuit board assemblies.
  • Electronic instrumentation.
  • Industrial control equipment.
  • Low-current power supplies.
  • Automation and monitoring systems.

Technical Specifications

Current 05 A
Voltage 250 V
Manufacturer Mersen
Series MI5 FA/FB 250V AL
Model S206901
Catalogue number MI5FBP25V0.05
Product type High-speed semiconductor miniature fuse
Rated current 0.05 A
Rated voltage 250 V AC
Operating characteristic High-speed FB
Fuse size 5 × 20 mm
Mounting type Axial leads
Current type AC
Pre-arcing I²t 0.0002 A²s
Total clearing I²t 0.0006 A²s
RoHS compliant Yes
EAN / UPC 3605340197068
Device Type Fuse link
Fuse Type Miniature, Semiconductor
Fuse Size 5x20 mm

Frequently Asked Questions

What is the Mersen S206901 used for?

The S206901 is used to protect sensitive semiconductor devices and low-current electronic circuits against overcurrents and short circuits.

What is the current rating of the Mersen S206901?

The fuse has a rated current of 0.05 A, equivalent to 50 mA.

What voltage is this fuse rated for?

The Mersen S206901 is rated for operation at up to 250 V AC.

Is the Mersen S206901 a high-speed fuse?

Yes. It has a very fast-acting FB characteristic designed to protect sensitive semiconductor and electronic components.

How is the Mersen S206901 installed?

The fuse has axial leads that allow it to be soldered directly onto a printed circuit board or connected to other electronic components.

Trusted by Electronics and Automation Engineers

Mersen high-speed miniature fuses are trusted by equipment manufacturers, automation engineers and maintenance professionals for dependable protection of semiconductor devices and sensitive electronic circuits.

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