SC to ST Duplex Fiber Optic Patch Cable - Multimode OM1 62.5/125μm

Some lengths are marked down to clear stock. Marked-down lengths are final sale and won't be restocked: orders can't be cancelled once placed, and the cord isn't eligible for return, exchange, or refund. Please check the length and the specifications below before you order, and get in touch first if you have any questions.

Buildings with a 62.5 µm fiber backbone often have both of the older connectors in service: ST on the enclosures and media converters from the first install, SC on the patch panels and equipment that came a few years later. This cord joins them, with a pair of SC push-pull connectors on one end and a pair of ST bayonet connectors on the other, on OM1 fiber that matches the plant. It runs 100 Mb/s Ethernet to 2 km and Gigabit to 275 m, so an SC panel can reach an ST port or panel directly, without a hybrid adapter or re-terminating either end.

It's a duplex zipcord, two 62.5/125 µm fibers in a 3.0 mm jacket. Each cord is tested and the end-faces are checked by interferometer before it ships.

Features

• SC to ST. Push-pull SC on one end, twist-lock ST bayonet on the other, both with PC-polished ferrules.
• OM1 multimode, 62.5/125 µm. Matches the 62.5 µm fiber in older building backbones; 100BASE-FX to 2 km and 1000BASE-SX to 275 m.
• Duplex zipcord. Two fibers in one jacket for a matched transmit and receive pair.
• Low insertion loss. 0.20 dB typical and 0.30 dB maximum per connector.
• 2.5 mm ceramic ferrules on both ends, checked by 3D interferometry for end-face geometry.
• Bayonet ST coupling. Push, quarter-turn, and it's locked; it won't pull out of a panel by accident.
• Orange PVC jacket, 3.0 × 6.1 mm. Heavier 3.0 mm zipcord in the OM1 color, for equipment rooms and industrial spaces.
• UL Listed for the US and Canada, and RoHS compliant.
• Twelve lengths from 1 to 30 m.

Where It Fits

It suits connecting an SC patch panel or media converter to an existing ST enclosure on a 62.5 µm backbone, linking older switches and converters with ST ports to SC equipment, 100 Mb/s and Gigabit uplinks between floors or buildings on OM1 fiber terminated on ST at one end and SC at the other, and any multimode link between an SC port and an ST port on a 62.5 µm plant.

Good to Know

Match the fiber, not just the connectors. OM1 is 62.5 µm core; OM2, OM3, and OM4 are 50 µm. Putting a 62.5 µm cord in front of a 50 µm fiber loses several dB at the junction because most of the light lands outside the smaller core, so use this cord only on a plant that's 62.5 µm end to end, which is usually the orange cable and the older install. The two ST connectors aren't keyed to each other the way the SC clip is, so polarity is set by which ST plug goes into which port: if the link doesn't come up, swap the two ST ends and try again before troubleshooting anything else. To seat an ST, line up the key on the plug with the slot on the port, push in against the spring, and turn clockwise until it stops; a half-seated ST is the most common cause of a "bad" fiber link. Both ferrules are 2.5 mm, so one 2.5 mm one-click cleaner covers both ends; keep dust caps on until the moment you plug in and clean both the connector and the port before mating. If the equipment side is LC rather than SC, look at the LC to ST OM1 cord.

Specifications