MERSEN FUSE 250V FB 0,063A 5X20 AL MI5FBP25V0,063

MERSEN FUSE 250V FB 0,063A 5X20 AL MI5FBP25V0,063

Mersen K205031 MI5FBP25V0.063 high-speed semiconductor fuse rated at 0.063 A and 250 V AC, featuring a 5 by 20 mm ceramic body and axial leads for soldered PCB mounting.

SKU: K205031Alt SKU: MI5FBP25V0,063MPN: K205031
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List Price £7.87 ex VAT
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Why Choose the Mersen K205031 MI5FBP25V0.063 Semiconductor Fuse?

The Mersen K205031, catalogue reference MI5FBP25V0.063, is a compact and highly responsive semiconductor protection fuse designed to safeguard sensitive electronic components against overcurrent and short-circuit faults. Its high-speed FB operating characteristic helps limit fault energy before it can damage semiconductor devices or associated circuitry.

Part of the Mersen 5 × 20 mm FA/FB miniature fuse series, the K205031 combines a very low current rating with a ceramic cartridge construction and axial leads. This configuration enables direct soldering onto printed circuit boards or connection to other components, making it suitable for compact electronic assemblies where conventional clip-mounted fuses may not be practical.

With a rated current of 0.063 A, equivalent to 63 mA, and a rated voltage of 250 V AC, the Mersen K205031 provides precise protection for low-current circuits. Its 4 kA minimum interrupting rating supports dependable fault clearance in suitable industrial and electronic applications.

Key Advantages

  • High-speed semiconductor protection fuse.
  • 0.063 A rated current for sensitive low-current circuits.
  • 250 V AC voltage rating.
  • Compact 5 × 20 mm ceramic fuse body.
  • Axial leads allow direct soldering onto printed circuit boards.
  • 4 kA minimum interrupting rating for reliable fault interruption.

Key Features

  • Mersen MI5FBP semiconductor miniature fuse series.
  • Catalogue number: MI5FBP25V0.063.
  • 0.063 A rated current.
  • 250 V AC rated voltage.
  • High-speed FB operating characteristic.
  • Axial lead mounting for soldered connections.
  • Ceramic insulating body.
  • Designed for semiconductor and sensitive electronic circuit protection.

Fast Protection for PCB-Mounted Electronics

Sensitive semiconductor components can be damaged by fault currents that rise more quickly than conventional protection devices can respond. The Mersen K205031 uses a high-speed FB fuse element to interrupt excessive current rapidly, helping minimise thermal and electrical stress within electronic circuits.

Its axial leads allow the fuse to be soldered directly onto a printed circuit board or connected to other components. This provides a secure installation method for electronic equipment, instrumentation and compact industrial assemblies where reliable low-current protection is essential.

Typical Applications

  • Semiconductor device protection.
  • Printed circuit board assemblies.
  • Industrial electronic equipment.
  • Instrumentation and measuring devices.
  • Electronic power supplies.
  • Automation and control modules.

Technical Specifications

Voltage 250 V
Manufacturer Mersen
Series Semiconductor Miniature Fuses Size 5 × 20 FA/FB 250 V AL
Model K205031
Catalogue number MI5FBP25V0.063
Product type High-speed semiconductor cartridge fuse
Rated current 0.063 A (63 mA)
Rated voltage 250 V AC
Current type AC
Operating characteristic High speed FB
Fuse body size 5 × 20 mm
Overall product length 76 mm
Product diameter 5.5 mm
Mounting type Axial leads
Connection type Soldered connection
Minimum interrupting rating 4 kA
Pre-arcing I²t 0.00041 A²s
Clearing I²t at rated voltage 0.0012 A²s
Body material Ceramic
Product weight Approx. 1.5 g
EAN / UPC 3605340185072
RoHS compliant Yes
Device Type Fuse link
Fuse Type Miniature, Semiconductor
Fuse Size 5x20 mm

Frequently Asked Questions

What is the Mersen K205031 used for?

The K205031 is a high-speed miniature fuse designed to protect sensitive semiconductor devices and low-current electronic circuits against overcurrent and short-circuit faults.

What is the current rating of the K205031?

The Mersen K205031 has a rated current of 0.063 A, equivalent to 63 mA.

What voltage is this fuse rated for?

The fuse has a rated operating voltage of 250 V AC.

How is the Mersen K205031 mounted?

The K205031 has axial leads designed for direct soldering onto printed circuit boards or connection to other electronic components.

What is the interrupting rating of the K205031?

The fuse has a minimum interrupting rating of 4 kA, providing dependable fault interruption when correctly applied.

Trusted for High-Speed Electronic Protection

Mersen semiconductor miniature fuses are widely used by electronic equipment manufacturers, automation engineers and industrial designers to provide fast and dependable protection for sensitive components and PCB-mounted circuits.

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