Panduit FY9WP77B005F111 48-Fiber Singlemode Plenum Trunk Cable Assembly

Overview

The Panduit FY9WP77B005F111 is a factory-terminated, 48-fiber singlemode trunk cable assembly from the QuickNet™ HD Flex product line, purpose-built for high-density structured cabling deployments in data centers, telecommunications rooms, entrance facilities, and equipment distribution areas. At 111 feet (33.8 meters) in length, this pre-terminated assembly eliminates field splicing and on-site termination labor — the leading cause of fiber link failures in rushed builds. The red outer jacket provides instant visual zone identification in congested cable management environments, and the plenum (OFNP) flammability rating qualifies it for installation in air-handling ceiling and floor plenums without conduit.

This assembly ships with a stranded installation pulling-eye end, which is a practical detail that matters during long horizontal runs through raised-floor pathways or overhead cable trays — it lets you attach a pull tape directly to the factory end without improvising a grip that could stress the fibers.

Key Features

• 48-Fiber Singlemode Construction: Forty-eight individual singlemode fibers in a single trunk — enough to support 12 parallel 40G QSFP+ MPO-to-ST breakout circuits or a mix of 10G and 1G links depending on your distribution architecture. Singlemode glass carries signal distances measured in kilometers, making this the correct choice wherever you need reach beyond the 300–400m limit of OM3/OM4 multimode.
• Pre-Terminated ST Connectors: Factory-polished ST connectors at each end ship insertion-loss tested and ready to install. Field-polished ST connectors are notorious for inconsistent geometry and contamination — factory termination removes that variable entirely. ST is a bayonet-lock connector common in legacy telecom rooms and campus entrance facilities; if your patch panels or equipment use LC or MTP/MPO, plan your cross-connect adapter panels before ordering.
• 111-Foot (33.8m) Engineered Length: At 33.8 meters this trunk spans the inter-row and inter-suite distances common in mid-size data halls without requiring a splice or a secondary coupler. Exact-length trunks reduce slack management overhead — excess cable in a fiber raceway is a real maintenance liability.
• Plenum (OFNP) Flammability Rating: OFNP-rated jacket material meets the most stringent North American fire code requirement for horizontal cabling. You can run this trunk through plenum air spaces above suspended ceilings or under raised floors without pulling it through conduit, which cuts both material cost and installation time on open-ceiling data center builds.
• Red Jacket — Color-Code Identification: Red is the TIA-568 recommended color for singlemode fiber trunks. In a multi-fiber cable management environment with OM3 aqua and OM4 violet also present, a red trunk is visually unambiguous during moves, adds, and changes — reduces mis-patching risk without labeling alone.
• QuickNet™ HD Flex Sub-Brand: The HD Flex platform is engineered for high-density data center environments where cable management space is constrained. The small-diameter trunk construction allows tighter bend radii and higher fill ratios in fiber raceways compared to standard-diameter singlemode trunks — relevant when you're routing multiple trunks through a shared pathway.
• Stranded Installation Pulling-Eye End: The stranded pulling-eye end design lets installation crews attach a Kellems grip or pull tape to the factory connector end for horizontal pathway pulls up to 111 feet without stressing the fiber buffer tubes or connectors. This is a field-practical feature that prevents the cable twist and kink damage common when pulling pre-terminated assemblies without a proper attachment point.

Integration and Compatibility

The FY9WP77B005F111 integrates into any Panduit structured cabling infrastructure using standard ST bulkhead adapters. ST connectors mate with ST-to-ST patch panels or ST-to-LC hybrid adapter panels for cross-connection into modern SFP+ and QSFP+ equipment using LC-duplex patchcords. In a fiber optic cable assembly architecture, this trunk typically occupies the horizontal layer between the main distribution area (MDA) and the horizontal distribution area (HDA), or between entrance facilities and telecommunications rooms.

For data center deployments running structured cabling according to TIA-942 or BICSI TDMM, consult a structured cabling planning guide to validate trunk length, fiber count, and connector type selections before ordering pre-terminated assemblies — field modifications to factory-terminated trunks are not feasible. Pair this trunk with appropriate fiber optic patch panels and ST-compatible adapter panels at both the source and destination equipment racks.

Singlemode fiber is compatible with SFP and SFP+ transceivers specified for OS1 or OS2 singlemode glass. Verify your active equipment's transceiver specifications before deployment — plugging a singlemode trunk into multimode-only optics will produce a non-functional link, not a degraded one.

Frequently Asked Questions

Q: What is the fiber count and fiber type on the FY9WP77B005F111?

A: The FY9WP77B005F111 contains 48 singlemode fibers. Singlemode glass (OS1/OS2) supports long-distance transmission measured in kilometers and is compatible with singlemode-specified SFP, SFP+, QSFP+, and QSFP28 transceivers.

Q: What connector type is installed on this trunk assembly?

A: Both ends are terminated with ST connectors. ST uses a bayonet-lock coupling mechanism and is common in legacy telecommunications rooms, campus distribution frames, and entrance facility patch panels. If your equipment uses LC or MTP/MPO connectors, you will need ST-to-LC or ST-to-MTP hybrid adapter panels.

Q: Can this cable be installed in a plenum ceiling space without conduit?

A: Yes. The FY9WP77B005F111 carries a Plenum (OFNP) flammability rating, which is the highest North American rating for horizontal cabling. It qualifies for direct installation in plenum air-handling spaces above suspended ceilings and under raised floors without conduit, per NEC Article 770 and TIA-568 requirements.

Q: What does the red jacket color signify on this assembly?

A: Red is the TIA-568-recommended jacket color for singlemode fiber trunk cables. In mixed-fiber environments where OM3 (aqua) and OM4 (violet) trunks are also present, red provides immediate visual identification of singlemode runs, reducing mis-patching during moves, adds, and changes.

Q: What is the pulling-eye end and why does it matter during installation?

A: The stranded installation pulling-eye end is a factory-integrated attachment point on one end of the assembly that allows installers to connect a Kellems grip or pull tape for horizontal pathway pulls. This prevents stress, kinking, and torsional damage to the fiber buffer tubes and factory-polished connectors during the pull — a common failure point when pre-terminated assemblies are pulled without a proper grip attachment.

Q: Is the FY9WP77B005F111 compatible with multimode fiber patch panels?

A: The trunk itself uses singlemode fiber, so it must be connected to singlemode-compatible equipment and transceivers. However, if your patch panel accepts ST bulkhead adapters, the physical connector will seat correctly regardless of whether adjacent ports serve multimode links. The critical requirement is that the active transceivers at each end of the link are specified for singlemode OS1 or OS2 glass.

Karl Wilson

When I spec pre-terminated fiber trunks for data center horizontal distribution, the details that matter most are connector type, fiber count relative to port density, and whether the flammability rating matches the plenum path. The FY9WP77B005F111 checks all three — 48 singlemode fibers, ST terminations, OFNP jacket — and the factory pulling-eye end tells me Panduit engineered this for real installation conditions, not just a spec sheet.

Technical Highlights:

• 48-Fiber Singlemode at 111 ft (33.8m): This fiber count supports twelve 40G QSFP+ breakout circuits or a full complement of 10G SFP+ links from a single trunk run — the 111-foot length covers MDA-to-HDA distances in most mid-size data halls without a splice point adding insertion loss to the link budget.
• OFNP Plenum Rating: Running fiber through a plenum without OFNP-rated jacket means pulling conduit, which adds cost and lead time on every run. The plenum jacket on the FY9WP77B005F111 eliminates that requirement in open-ceiling data centers and telecom rooms where the air-handling space doubles as the cable pathway.
• Factory ST Terminations with Pulling-Eye: Field-terminated ST connectors introduce geometry variability that factory-polished ends don't. The stranded pulling-eye end means you can run this trunk through a 111-foot pathway without improvising a grip that stresses the buffer tubes — a real-world installation concern that's easy to overlook until you've pulled a connector off a factory end mid-job.

Deployment Considerations:

• ST connectors are a legacy format — verify your patch panels and active equipment all accept ST before ordering. If the far-end equipment uses LC-duplex SFP+ ports, budget for ST-to-LC hybrid adapter panels at both termination points; those are separate line items.
• At 48 fibers and 111 feet, this is a fixed-length factory assembly — there is no trimming or re-terminating in the field. Measure your actual cable pathway (not just the straight-line distance) before confirming the length. Add 10–15% for routing around obstacles, proper slack loops at each end, and future moves.

The FY9WP77B005F111 is the right specification for entrance facility-to-telecommunications-room runs in mid-size enterprise campuses or colocation data centers where singlemode reach, plenum compliance, and a 48-fiber count align with a TIA-942-compliant horizontal distribution design — particularly in buildings where the existing fiber infrastructure already standardized on ST terminations.