ST fiber optic connector: commonly used in fiber optic patch panels, the shell is round and the fastening method is screw buckle. (For 10Base-F connection, the connector is usually ST type. Commonly used in fiber optic patch panels)
ST 250um Connector/ST 500um Connector/ST 750um Connector/ST 1000um Connector/ST 1500um Connector/Custom made
ST fiber optic connector is a circular bayonet fiber optic interface with the following main features:
1. Structural characteristics
Aperture diameter: can be customized, mostly made of ceramic or metal, compatible with multimode fiber (50/62.5μm), single-mode is less used.
Locking method: snap-on rotation lock (rotate 90° to fix after insertion), similar to BNC connector, with better vibration resistance than plug-in interface.
Shell material: metal or high-strength plastic, suitable for industrial environment.
2. Performance parameters
| Parameter | Specification | Notes |
| Insertion loss | <0.5dB (typical 0.3dB) | Equivalent to FC/SC |
| Return loss | ≥25dB (PC end face) | Mostly used in ordinary data transmission scenarios |
| Tensile strength | ≥90N | Industrial-grade reliability |
| Working temperature | -40℃~70℃ | Adapt to extreme environments |
| Plug-in times | >1000 times | Long-term use stability |
3. Application scenarios
Network type: 10Base-F Ethernet (early standard), enterprise LAN (short-distance multimode transmission), military communication equipment.
Typical scenarios:
Fiber distribution frame: used as a transfer node for trunk and branch optical fibers.
Military/medical equipment: relies on its anti-vibration characteristics (the bayonet lock is not easy to loosen).
Industrial control: suitable for workshop-level data transmission of multimode optical fiber.
4. Comparison and compatibility
Compared with SC: SC is square plug-in type with higher density; ST round buckle is more suitable for vibration environment.
Compared with FC: FC is more stable through threaded fastening but slower to install; ST clip installation is 30% faster.
Compatibility: Need to match PC end face type.
