Panduit FHC9N-16F-C2U 16-Fiber OS2 MPO Cassette

Panduit FHC9N-16F-C2U HD Flex™ Fiber Cassette

The Panduit FHC9N-16F-C2U is a standard-width HD Flex™ fiber cassette engineered for high-density single-mode breakout in enterprise data centers and backbone installations. It breaks out one 24-fiber MPO trunk connector to eight CS (Color-Specific) connectors with 16 active fibers, using OS2 9/125μm single-mode fiber optimized for 10G/40G/100G links up to 10 km. Universal polarity design eliminates the need to stock separate A/B/C cassette types, simplifying inventory and reducing deployment errors during moves, adds, and changes. Standard insertion loss specifications ensure predictable link budgets across multi-tier structured cabling systems. Built for Panduit's modular HD Flex enclosures, this cassette supports migration from duplex LC infrastructure to MPO-based parallel optics without ripping out existing pathways or racks.

Key Features

• 24-Fiber MPO-to-CS Breakout: One male MPO-24 trunk input fans out to eight CS connectors, delivering 16 active fiber paths in a single cassette footprint for space-efficient patching.
• OS2 Single-Mode Fiber: 9/125μm glass core supports 10GBASE-LR, 40GBASE-LR4, and 100GBASE-LR4 transceivers across distances up to 10 kilometers, meeting datacenter interconnect and campus backbone requirements.
• Universal Polarity: Field-convertible polarity eliminates the need to pre-plan cassette types (Method A/B/C) during installation, reducing on-site rework and simplifying spares inventory for facilities teams.
• Standard Insertion Loss: Factory-terminated and tested to meet TIA-568 and IEC 61753 IL specs, ensuring repeatable performance across cassette-to-cassette and cassette-to-trunk connections in tiered architectures.
• HD Flex™ System Integration: Drop-in compatibility with Panduit FHD and FHDA series enclosures, allowing cassette swaps without tools or service interruption in live production environments.
• Polycarbonate Housing: Black UL94 V-0 flame-rated enclosure protects internal fiber splices and connectors from dust, mechanical stress, and accidental contact during MACs.
• 16-Fiber Active Count: Eight duplex LC-equivalent circuits per cassette, balancing density with per-port accessibility for troubleshooting and patching in congested rack environments.
• Factory Pre-Terminated: Arrives with fusion-spliced MPO interface and unterminated CS breakouts, ready for field termination to match existing infrastructure connector types (LC, SC, or ST).

The FHC9N-16F-C2U addresses a common datacenter challenge: migrating from traditional duplex fiber patching to MPO-based trunk-and-branch architectures without forklift upgrades. In legacy installations, each 10G link requires two individual LC patch cords and two panel ports, consuming 1U of space per 12 circuits. As bandwidth demands scale to 40G and 100G, parallel optics (MPO12/MPO24 interfaces) become the only viable path to maintain physical density. This cassette acts as a media converter between the high-fiber-count MPO trunk — typically pre-installed in risers or under-floor pathways — and the lower-fiber-count duplex connectors used by existing switch and storage transceivers. The universal polarity design is critical here: TIA-568 defines three polarity methods (A, B, C) to ensure transmit lanes align with receive lanes across multi-cassette links. Stocking separate cassette SKUs for each method creates inventory bloat and deployment risk (installing a Method B cassette in a Method A link produces a dead circuit). Panduit's universal cassette uses a rotating MPO adapter and reversible pinning that field techs can flip on-site in under 60 seconds, converting the cassette to any required polarity without re-terminating fiber or ordering new hardware. This cuts truck rolls and eliminates the "wrong cassette" failure mode during after-hours maintenance windows.

OS2 single-mode fiber is the standard for datacenter interconnects, campus backbones, and any application where link distance exceeds 300 meters or future bandwidth growth to 100G+ is planned. The 9-micron core diameter supports tight wavelength control and low chromatic dispersion, allowing 10GBASE-LR optics to reach 10 km and 100GBASE-LR4 to hit 10 km on a single fiber pair without amplification or dispersion compensation modules. This makes the FHC9N-16F-C2U ideal for building-to-building links, data center row-to-core uplinks, and SAN extension circuits where multimode fiber's 300–550 meter OM3/OM4 limits would require costly media converters or fiber runs through congested conduit. The 16-fiber active count (8 duplex pairs) maps cleanly to common switch port densities: a single cassette supports eight 10G SFP+ links, two 40G QSFP+ breakout links, or one 100G QSFP28 breakout link when paired with appropriate breakout cables. The unterminated CS breakout outputs give integrators flexibility to field-terminate LC, SC, or ST connectors based on existing infrastructure, avoiding the adapter clutter and insertion-loss penalty of factory-LC cassettes mated to SC or ST panels via hybrid adapters.

Standard insertion loss specifications and factory fusion splicing ensure this cassette fits within TIA-568.3-D and ISO/IEC 11801 link budgets for structured cabling permanence. Each MPO interface is tested to ≤0.5 dB IL per mated pair, and internal splice points meet ≤0.1 dB per splice, keeping total cassette contribution under 0.75 dB in a worst-case 2-connector link (MPO trunk to LC patch). This leaves margin for connector mating variation, panel adapters, and fiber aging in 40G links (max 1.5 dB budget) and 100G links (max 1.9 dB budget per IEEE 802.3bm). The polycarbonate housing meets NEMA and IEC IP20 ingress protection when installed in HD Flex enclosures, shielding splice trays and fiber bend radius management from airflow turbulence and accidental tool contact during adjacent rack work. The cassette's push-latch retention mechanism holds it firmly in the enclosure slot without screws, allowing hot-swap replacement during troubleshooting or capacity upgrades without powering down the rack or removing adjacent cassettes. For compliance-driven environments, the OS2 fiber and MPO connector geometry meet ANSI/TIA-604-5 (FOCIS-5) and IEC 61754-7 physical-contact interface specs, ensuring interoperability with Cisco, Juniper, Arista, and Dell optics modules that expect industry-standard insertion loss and return loss performance. This cassette is the structured-cabling backbone piece that turns high-fiber-count riser trunks into usable switch ports, bridging the gap between outside-plant MPO infrastructure and active equipment that still speaks duplex LC.