10m LC/UPC to LC/APC Single Mode Fiber Patch Cable, OS2 9/125 Duplex Corning, LSZH/OFNR, Yellow

The CableLeader FB112-91XX is an OS2 single mode duplex patch cable with a deliberately mixed termination: one end is LC/UPC with blue housings, the other LC/APC with green housings. The two polish types are electrically identical glass but optically incompatible connectors — an APC ferrule is cut at an 8-degree angle, a UPC ferrule is flat — so ports of one type can never accept a cable of the other. This hybrid cable exists precisely to join them in a single factory-terminated link.

The LC/UPC end carries the flat, domed endface standard on data equipment. It is rated 55 dB minimum return loss and plugs into SFP transceivers, media converters, network switches, and UPC patch panels. Like the far end, it uses a short boot 19.5 mm LC connector and is factory-tested to 0.30 dB maximum insertion loss at 1310/1550 nm.

The LC/APC end is polished at 8 degrees, redirecting back-reflection into the cladding for a 65 dB minimum return loss. Green housings mark it for the APC side of the link: GPON distribution panels, optical splitters, and ONT or OLT hardware in the access network, where angled polish is specified to protect reflection-sensitive signals.

The jacket is LSZH/OFNR rated under UL file E510298. Low-smoke zero-halogen material limits toxic emissions in enclosed equipment rooms, while the OFNR riser rating permits vertical runs between floors. The 2.0 mm x 4.1 mm duplex zipcord keeps each Corning 9/125 um G657A1 fiber in its own aramid-reinforced sub-unit, and RoHS compliance covers restricted-substance procurement requirements.

G657A1 bend insensitive glass tolerates the tight routing radii of cable managers, wall enclosures, and crowded racks without the attenuation spikes standard G652D fiber shows under the same handling. Typical deployments include patching a GPON splitter or APC wall plate to a UPC media converter, connecting APC building plant to switch transceivers, and test-bench links where instruments and plant use different polishes.

Compatibility & Ordering Information — orientation is fixed by port type: plug the blue LC/UPC end into UPC equipment such as SFP transceivers, switches, and media converters, and the green LC/APC end into APC plant such as GPON panels, splitters, and ONT/OLT ports. Never reverse them; mating APC to UPC damages ferrules and produces high loss. The family is offered from 1 m through 10 m; select the variant covering the run plus a service loop. For same-polish links see the FB131-91XX (UPC both ends) and FB110-91XX (APC both ends) families; a simplex version is available as FB118-91XX.

Product Comparison: Hybrid LC/UPC to LC/APC vs Same-Polish Single Mode Patch Cable

All three cables use identical Corning OS2 9/125 G657A1 fiber; the difference is the endface polish at each end, which decides which two ports a cable can join. The table summarizes when each construction is required:

Select the hybrid cable (this product) only when one port is UPC (blue) and the other is APC (green); plug blue into UPC equipment and green into APC plant.
Select a same-polish cable when both ports match. APC and UPC ferrules must never mate directly — the mismatch damages the angled endface and causes high loss.

FAQ

What is the difference between a hybrid UPC-APC cable and a same-polish cable?

A hybrid cable has a different polish on each end — here blue LC/UPC on one end and green LC/APC on the other — while a same-polish cable matches both ends. Same-polish cables cannot join a UPC port to an APC port, because the flat and 8-degree angled ferrules must never mate directly. The hybrid cable performs that transition in one factory link.

Is this cable compatible with my switch and GPON equipment?

Yes, when the switch side is a UPC port and the GPON side is APC. Plug the blue LC/UPC end into the SFP transceiver, switch, or media converter, and the green LC/APC end into the GPON panel, splitter, or ONT/OLT port. If both of your ports are the same polish type, use a same-polish cable instead of this hybrid.

What return loss does each end provide?

The LC/UPC end is rated 55 dB minimum return loss and the LC/APC end 65 dB minimum, each meeting the standard for its polish type. Both connectors are factory-tested to 0.30 dB maximum insertion loss at 1310/1550 nm, so the hybrid construction adds no loss penalty over same-polish cables of the same grade.

Which end plugs into which device?

Match housing color to port type: blue LC/UPC goes to UPC equipment — SFP transceivers, switches, media converters — and green LC/APC goes to APC plant — GPON panels, splitters, ONT and OLT hardware. Push each connector straight in until it clicks. Reversing the ends mates mismatched ferrules and damages the angled endface.

When do I need a hybrid UPC to APC cable?

Choose this hybrid whenever one port is UPC (blue) and the other is APC (green) — typically connecting FTTH or GPON plant, which standardizes on APC, to data equipment, which standardizes on UPC. If both ports are blue choose the FB131 UPC family; if both are green choose the FB110 APC family.