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GAOTek One Crimp Fiber Optic ST Connector 3.0 mm


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GAOTek One Crimp Fiber Optic ST Connector 3.0 mm is designed with fiber optic termination method and is used in short and long distance fiber optic applications and in networking applications. It has bayonet-style housing and a long spring-loaded ferrule to hold the fiber. It is available in both multi-mode and single-mode versions. It provides horizontally mounted simplex and duplex adapters with metal or plastic housing, with a choice of phosphor bronze or zirconium split sleeve. The design of the fiber optic ST Connector enables it to be easily inserted and removed. It is one of the older generations of connector, but is still widely used for multimode networks, including LANs for buildings and campuses.


  • This Connector supports both single mode and multimode versions.
  • It can accommodate tight and loose tube buffer cables with jacket of up to 3 mm (0.118 inches).
  • Its coupling nut radial track minimizes the rotation needed to mate the connector.
  • It has an assembly body construction that simplifies field’s assembly.
  • The connector also provides low insertion loss and ultra-low back reflection.
  • It supports ceramic ferrules that are configured for easy hand or machine Polishing.
  • Some optional boot colors are also available.

Technical Specifications

Item Parameters
Single-Mode Multi-Mode
Insertion Loss ≤ 0.3 dB
Durability 0.2 dB Max
Operating Temperature -40 °F ~ 185 °F (-40 °C ~ +85 °C)
Storage Temperature -40 °F ~ 185 °F (-40 °C  ~ +85 °C)
Connector ST

Ferrule Concentricity SM < 1 µm; MM < 4 µm

Ferrule inner diameter tolerance SM 125+1/-0 µm; MM 127+3/-0 µm

Ferrule outer diameter tolerance ±0.5 µm

Additional Information


  • Telecommunications Networks
  • CATV
  • Networking
  • FTTP
  • LAN and WAN

Cable Specifications

No. Items Unit Specification


1. Mode Field Diameter 1550 nm mm 8.0 ~ 11.0 ± 0.6
2. Cladding Diameter mm 125 ± 1.0
3. Cladding Non-Circularity % ≤1.0
4. Core-Cladding Concentricity Error mm ≤0.6
5. Coating Diameter mm 245 ± 10
6. Cladding-Coating Concentricity Error mm ≤12.5
7. Cable Cut-off Wavelength nm λcc ≤ 1450
8. Attenuation (max.) 1550 nm dB/km ≤0.22
1625 nm ≤0.24


Characteristics Conditions Units Value
Temperature Dependence Induced Attenuation -76 °F ~ 185 °F (-60°C ~ +85°C) dB/km ≤0.05
Temperature Humidity Cycling Induced Attenuation 185 °F (85 °C), RH 85%,

30 Days

dB/km ≤0.05
Water Soak Dependence Induced Attenuation 73.4 °F (23 °C), 30 Days dB/km ≤0.05
Dry Heat Aging Induced Attenuation 185 °F (85 °C), 30 Days dB/km ≤0.05

Appearance and Dimensions


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