SC Adapter (Subscriber Connector Adapter) is a widely used connection component in optical fiber communicationPush-pull locking mechanismandcost-effectiveKnown for its use in scenarios such as access networks, fiber-to-the-home (FTTH), security monitoring, and early data centers. The following is a detailed description and a point-by-point analysis of its characteristics:

1：SC Simplex Adapter Specification

2：SC Duplex Adapter Specification

Parameter:

Specification & Order Code:

First, the core functions of the SC adapter

1. mechanical connection
   The SC-type connector can be quickly plugged and unplugged through the plastic buckle structure, and the termination of simplex or duplex fiber jumpers and pigtail is supported.

2. end face alignment
   The internal ferrule ensures that the connector end faces (e.g. PC, UPC, APC) are precisely docked, reducing insertion loss and reflection.

II. Main features

1. Structural characteristics

• Push-pull latch: No need to rotate, easy to plug and unplug, suitable for scenarios with frequent operation.
• Square shellThe size is 2.5mm (the same as FC and ST), the volume is moderate, and the space utilization is higher than FC but lower than LC.
• Material selectionThe sleeves are mostly plastic (low cost) or ceramic (high precision), and the outer shell is made of plastic or metal.

2. Performance parameters

• insertion loss：
  • 单模（OS1/OS2）：≤0.5dB（典型值）
  • 多模（OM1/OM2）：≤0.5dB（典型值）
• return lossPC type ≥ 40dB, UPC type ≥ 50dB, APC type ≥ 60dB (depending on the end face process).
• durabilityInsertion and unplugging life is approximately 500 times (plastic sleeve) or higher (metal-reinforced).

3. Type diversity

• Simplex/DuplexSimplex adapts to a single connector, duplex integrates two independent channels (6.25mm pitch).
• Single mode/multimode: Adapt to different fiber types (single mode 9/125μm, multimode 50/125μm or 62.5/125 μm).
• Color identificationSingle-mode (blue) and multi-mode (beige) are usually distinguished by the shell color.

4. Application scenarios

• access networkfiber optic distribution frame (ODF) termination of FTTH and FTTB networks.
• security monitoringFiber optic jump connection between camera and switch.
• Industrial ControlFlexible deployment of signal transmission between devices.

• Traditional data center: Legacy systems of early 1G/10G networks.