SC and ST connectors

SC/ST connectors are used for connecting fiber-optic cabling to networking devices. SC stands for subscriber connector and ST stands for straight tip. See full article to find more.

Sponsor: The only proven system that really works! Winning Sports Picks & Predictions

What is SC and ST connectors?

Connector types that are generally used for connecting fiber-optic cabling to networking devices. Both are recognized by the Electronic Industries Alliance/Telecommunications Industry Association (EIA/TIA) 568A standard.

SC stands for subscriber connector and is a standard-duplex fiber-optic connector with a square molded plastic body and push-pull locking features. SC connectors are typically used in data communication, CATV, and telephony environments.

ST stands for straight tip, a high-performance fiber-optic connector with round ceramic ferrules and bayonet locking features. ST connectors are more common than SC connectors.

You can generally use SC and ST connectors with either single-mode or multimode fiber-optic cabling. Coupling receptacles for these connectors come in either panel-mount or free-handing designs. For narrow space installations, you can get 90-degree boot versions instead of straight versions. SC and ST connectors come in both simplex and duplex form.

See examples (from Amazon): ST to ST Fiber Patch Cable Multimode Duplex (3.28ft/1m), or Tripp Lite Duplex Multimode 62.5/125 Fiber Patch Cable (SC/SC), 5M (16-ft.).

Graphic S-2. SC and ST connectors.


A third type of fiber-optic connector is the SMA connector, which has a threaded-nut locking feature. Subtypes include SMA905 and SMA906 connectors.


The best fiber-optic connectors are military-grade connectors. These connectors satisfy the MIL-C-83522 (ST) specifications and are corrosion-proof; have isolated relief boots to reduce cable strain; and are heat, shock, vibration, fungus, and salt-spray resistant.

Installation Guide of Field Installable Fiber Connector SC/AP

Texto a descrever ou apresentar ou contextualizar o vídeo.