FC-FC Multimode Simplex Metal Fiber Optic Adapter Round & Big D

The FC to FC Multimode Fiber Optic Adapter with round metal body and large flange (Big D type) provides a stable and durable connection solution for structured cabling systems and telecom applications.

SKU FCFCMSMBD Category
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The FC to FC Multimode Simplex Fiber Optic Adapter with Round Metal Body and Large Flange (Big D Type) is designed for secure and precise fiber alignment in structured cabling systems. It provides a stable connection between two FC connectors, ensuring consistent optical performance and low insertion loss in multimode fiber networks.

Featuring a durable round metal housing with a large flange design, this adapter offers enhanced mounting stability and improved mechanical strength compared to standard square types. It is well-suited for environments requiring robust installation, such as telecom rooms, data centers, and industrial fiber distribution systems. The precision alignment sleeve ensures accurate core positioning for reliable signal transmission.
Connector TypeFC to FC
Fiber ModeMultimode compatible
Design TypeSimplex
Housing MaterialMetal (nickel-plated)
ShapeRound (Big D flange)
Mounting TypePanel mount
Alignment SleeveZirconia ceramic
Insertion Loss≤ 0.2 dB (typical)
Return Loss≥ 30 dB
DurabilityHigh mechanical strength
CompatibilityFC/UPC | FC/APC connectors
ApplicationPatch panel / ODF
  • FC to FC interface compatibility
  • Supports multimode fiber systems
  • Simplex configuration for single-fiber connection
  • Round metal housing with large flange (Big D type)
  • Enhanced mechanical stability for secure installation
  • High-precision alignment sleeve for accurate coupling
  • Low insertion loss and stable optical performance
  • Corrosion-resistant metal construction
  • Telecom and carrier network systems
  • Data center fiber distribution panels
  • Optical distribution frames (ODF)
  • Industrial fiber optic installations
  • Enterprise structured cabling systems
  • Testing and measurement environments

We provide OEM and ODM services including housing shape customization (round, square, hybrid), material options, surface finishing (nickel-plated, anodized), logo engraving, and packaging design. Bulk customization is available for distributors and infrastructure projects.

  • What does “Big D type” mean in FC adapters?
    It refers to a larger flange design that provides stronger mechanical support and more stable panel mounting.
  • Why choose a round metal FC adapter?
    Round metal designs offer improved durability and are often preferred in industrial or high-vibration environments.
  • Is this compatible with single-mode fiber?
    Yes, FC adapters can support both multimode and single-mode fiber depending on the connectors used.
  • What is the benefit of a large flange design?
    The large flange increases mounting stability and reduces movement in patch panels or ODFs.
  • Where is this adapter commonly used?
    It is commonly used in telecom rooms, data centers, industrial systems, and fiber distribution frames.