MERSEN FUSE 250V FC 1,25A 5X20 MI5FC25V1,25

MERSEN FUSE 250V FC 1,25A 5X20 MI5FC25V1,25

Mersen D206037 MI5FC 5 x 20 mm high-speed semiconductor protection fuse rated at 1.25 A and 250 V AC for sensitive electronic and industrial applications.

SKU: D206037Alt SKU: MI5FC25V1,25MPN: D206037
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Why Choose the Mersen D206037 Miniature Semiconductor Protection Fuse?

The Mersen D206037 is a 5 × 20 mm ultra-fast semiconductor protection fuse from the trusted Mersen MI5FC 250 V series. Designed for protecting sensitive electronic circuits and semiconductor devices, it delivers exceptionally rapid fault clearing to minimise damage caused by overloads and short circuits.

Featuring a 1.25 A current rating and a 250 V AC voltage rating, the D206037 provides dependable protection for industrial electronics, instrumentation, power supplies and control systems where conventional fuses cannot react quickly enough. Its compact miniature format allows straightforward installation into standard 5 × 20 mm fuse holders.

Manufactured to stringent quality standards, this Mersen semiconductor fuse offers low pre-arcing I²t values, excellent current limiting characteristics and reliable performance in demanding electrical and electronic applications.

Key Advantages

  • Ultra-fast protection for sensitive semiconductor devices.
  • Compact 5 × 20 mm miniature fuse format.
  • 1.25 A rated current for electronic circuit protection.
  • 250 V AC rated voltage.
  • Low let-through energy helps minimise equipment damage.
  • Manufactured by Mersen for dependable industrial reliability.

Key Features

  • Mersen MI5FC high-speed fuse series.
  • Item number: D206037.
  • Rated current: 1.25 A.
  • Rated voltage: 250 V AC.
  • Miniature 5 × 20 mm ceramic fuse.
  • Ultra-fast semiconductor protection characteristic.
  • UL/CSA recognised.
  • Suitable for printed circuit boards and electronic equipment.

Fast Protection for Sensitive Electronics

Unlike standard cartridge fuses, semiconductor protection fuses are engineered to interrupt fault currents in extremely short times, helping prevent catastrophic damage to IGBTs, MOSFETs, SCRs, diodes and other sensitive electronic components.

The Mersen MI5FC series combines fast response, compact dimensions and proven reliability, making it suitable for industrial automation, electronic control systems and power conversion equipment requiring dependable circuit protection.

Typical Applications

  • Industrial power supplies.
  • Electronic control equipment.
  • PLC and automation systems.
  • Semiconductor protection circuits.
  • Instrumentation.
  • Laboratory equipment.
  • Printed circuit board assemblies.
  • Industrial electronic devices.

Technical Specifications

Current 25 A
Voltage 250 V
Manufacturer Mersen
Series MI5FC Semiconductor Protection Fuses
Model D206037
Product type Miniature high-speed semiconductor fuse
Rated current 1.25 A
Rated voltage 250 V AC
Fuse size 5 × 20 mm
Pre-arcing I²t 0.11 A²s
Clearing I²t 0.35 A²s
Approvals UL/CSA Recognised
Application Semiconductor and electronic circuit protection
Mounting Standard 5 × 20 mm fuse holder
Device Type Fuse link
Fuse Type Miniature, Semiconductor
Fuse Size 5x20 mm

Frequently Asked Questions

What is the Mersen D206037 used for?

The D206037 is designed to provide ultra-fast protection for semiconductor devices and sensitive electronic circuits against overloads and short circuits.

What are the voltage and current ratings?

This fuse has a rated current of 1.25 A and a rated voltage of 250 V AC.

What size is the fuse?

The D206037 is manufactured in the industry-standard 5 × 20 mm miniature fuse format.

Is this suitable for semiconductor protection?

Yes. It is specifically designed as a high-speed semiconductor protection fuse with very low I²t characteristics.

Where is this fuse commonly installed?

It is commonly installed in industrial electronic equipment, power supplies, instrumentation and automation systems using standard 5 × 20 mm fuse holders.

Trusted Protection for Critical Electronics

Mersen high-speed semiconductor fuses are trusted worldwide by machine builders, panel manufacturers and industrial engineers to protect valuable electronic equipment with fast, reliable fault interruption.

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