ST Fiber Optic adapter

SC Adapter (Subscriber Connector Adapter), as one of the most classic and widely used connection components in the field of optical fiber communication, relies on itscost-effectiveandease of useIt continues to play an important role in scenarios such as access networks, fiber-to-the-home (FTTH), security monitoring, and traditional data centers. The following is an in-depth analysis based on technical details, application scenarios, and user requests:

ST ADAPTOR Specification

1 Insertion loss

2 Part material

3、Requirement

First, the core functions of the SC adapter

1. mechanical coupling mechanism
   passed推拉式塑料卡扣实现快速插拔，无需旋转工具，支持单工（Single）或双工（Duplex）光纤跳线、尾纤的端接。

2. End face alignment and fixation
   internal adoption陶瓷或塑料套筒（ferrule holder），确保连接器端面（PC、UPC、APC）精准对接，并通过弹簧压力保持物理接触。

II. Detailed explanation of technical characteristics

1. Physical structure and size

• Shell size：
  • 方形设计，宽2.5mm（与FC/ST通用），长度约10mm（单工），双工版本集成两个独立通道（间距6.25mm）。
• material selection：
  • 套筒：塑料（低成本，插入损耗约0.5dB）或陶瓷（高精度，损耗
  • 外壳：塑料（轻便，适合室内）或金属（增强EMI防护，工业环境适用）。

2. Optical performance parameters

3. End face type and compatibility

• PC（Physical Contact）Flat end face, low cost, suitable for short distances (≤ 2km).

• UPC（Ultra Physical Contact）Spherical surface polishing, return loss improvement, suitable for medium distance (≤ 10km).

• APC（Angled Physical Contact）8 ° inclined end face, eliminating reflection interference, suitable for long-distance or CATV systems.

III. Application scenarios and advantages

1. Typical application
   • access network: fiber optic distribution frame (ODF) termination of FTTH/FTTB network.
   • 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.
2. core advantage

   • EconomyPlastic material reduces costs and is suitable for budget-sensitive scenarios.

   • ease of useThe push-pull design requires no tools, and the installation efficiency is increased by more than 50%.

   • compatibilitySupport mainstream SC connectors, suitable for different manufacturers of equipment.