myMectronic
myMectronic

A Premier B2B Part Search

OptiFuse FSD4A Fast Acting Glass Fuse

A set of five 20 mm glass body fast-acting fuse links rated at 4A current. Suitable for standard European electrical applications, providing reliable overcurrent protection in electronic and electrical circuits.

Authorized Distributors
Source:DigiKey
Part No:FSD-4A
Stock:4510
Inv Date:06-05-2026
Price: Unit price: $0.97
Buy/RFQ:
Part No:FSD-4A
Stock:15
Inv Date:06-05-2026
Price: Unit price: $0.21
Buy/RFQ:
Part No:FSD-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.5846
Buy/RFQ:
Part No:FSD-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.5846
Buy/RFQ:

OptiFuse FSD4A Fast Acting Glass Fuse Specifications:

  • Type: Fast Acting Glass Tube Fuse
  • Dimensions: 5x20mm
  • Rating: 4A
  • Operating Temperature: -55°C to +125°C
  • Material: Glass Body with Nickel Plated Brass Caps
  • Lead Wire Diameter: 0.65mm
  • Lead Wire Diameter over 15A: 1.0mm
  • Lead Wire Diameter for 8A and less: 0.8mm
  • Mechanical Dimensions: Inches [mm]: 0.201+0.024 [5.10+0.6], 0.790+0.02 [20+0.5], 1.57+0.04 [40+1], 0.83+0.04 [21+1]
  • Certifications and Standards: UL Listed (implied), designed for European electrical standards
  • Application: Protection against overcurrent in electronic and electrical circuits, suitable for occasional use

Buy the Optifuse Series FSD Glass Fuse: FSD4A

Secure your electronic and electrical circuits today by purchasing the Optifuse FSD4A fast-acting glass fuse online. Designed for reliable overcurrent protection, these 20 mm fuses are perfect for European standard applications. They feature a glass body with nickel-plated brass caps, rated at 4A, and operate within -55°C to +125°C. Easy to install, these fuses prevent circuit damage caused by power surges or overloads and are suitable for various electronic devices. Order now to ensure safe and efficient circuit protection.

Buy Optifuse FSD4A now and experience unmatched reliability and performance in your overcurrent protection needs.

Frequently Asked Questions

Where can I buy OptiFuse FSD4A?

You can click on the BUY or RFQ button to purchase FSD4A from an authorized OptiFuse distributor.

How do I troubleshoot issues or seek technical support for part FSD4A?

You can download the FSD4A datasheet or visit the OptiFuse website for support.

Who is the manufacturer of FSD4A?

OptiFuse

OptiFuse Part List

Browse and search other OptiFuse parts, locate datasheets and stock

Sponsored by