Panduit F91EL1NB1SNM005 Opti-Core OS2 Single-Mode Fiber Patch Cord

The Panduit F91EL1NB1SNM005 delivers precision single-mode connectivity for long-haul data center links, fiber-to-the-desk extensions, and IP camera transmission systems requiring maximum reach and minimal signal degradation. This 5-meter OS2 patch cord terminates LC Simplex on one end and LC/APC (Angled Physical Contact) on the other—a configuration that reduces back reflection below -60 dB, critical for GPON, passive optical networks, and high-sensitivity video transmission where even minor return loss degrades signal integrity. The 1.6 mm low-smoke zero-halogen jacket meets EN 60332-1-2 flame propagation limits, making it code-compliant for installation in occupied spaces, above suspended ceilings, and inside cable trays where PVC off-gassing poses life-safety risk.

Key Features

OS2 9/125 µm single-mode fiber supports 10G/40G/100G transmission beyond 10 km, future-proof for 400G migration

LC Simplex to LC/APC hybrid termination—APC connector's 8° end-face angle cuts return loss to -60 dB typical vs. -50 dB for UPC, protecting OLT ports and RF-over-fiber links

1.6 mm LSZH jacket—50% smaller than standard 3 mm cordage, increases patch-panel density 2:1 and improves airflow in packed cabinets

Yellow PVC-free jacket for instant single-mode identification per TIA-598-D color code, eliminates cross-patching errors in mixed OM3/OM4/OS2 environments

Standard insertion loss ≤0.3 dB typical—Panduit's automated polish process delivers repeatable optical performance, no hand-polished variance

5-meter working length suits rack-to-rack campus backbone entry, head-end to distribution switch, or camera-to-media-converter spans

Single-mode OS2 fiber maintains full 10GBASE-LR budget beyond 300 meters—essential for surveillance head-ends serving perimeter cameras over campus fiber, inter-building data center interconnects, and fiber-fed PoE switch stacks. Where OM3/OM4 multimode suffers modal dispersion past 550 meters, this patch cord's 9 µm core sustains diffraction-limited propagation across 40 km on 10G optics and scales to 100GBASE-LR4 at 10 km without re-cabling. Integrators designing IP camera networks around centralized NVRs and remote switch closets eliminate the multimode reach ceiling by standardizing on OS2—this cordage provides the last-meter connection between fiber enclosures and SFP+ cages.

The APC (Angled Physical Contact) termination on the secondary connector directs reflected light into the cladding rather than back toward the source—critical in three scenarios. First, GPON and XG-PON passive optical networks demand APC at the OLT to prevent upstream burst-mode receiver saturation; mixing UPC cordage triggers LOS alarms. Second, DWDM transport and CATV RF-over-fiber links operate near the receiver's noise floor, where -50 dB return loss (UPC typical) introduces intersymbol interference that -60 dB APC eliminates. Third, high-count installations with multiple patch points accumulate return-loss budget—four UPC connections in series can degrade link performance below system margins, while APC maintains specification across eight mated pairs. Verify head-end equipment data sheets: if the transceiver lists "APC required," this hybrid simplex-to-APC cord is the correct choice.

LSZH jacketing substitutes polyolefin polymers that emit 80% less smoke and zero halogenated acid vs. PVC during combustion. EN 60332-1-2 certification confirms this patch cord's jacket will not sustain flame propagation when tested per European single-cable standards—equivalent to UL 1666 riser rating in North American installations. Data centers and telecom rooms benefit from LSZH as insurance against smoke-damage claims when cable tray fires force evacuation; insurers and corporate risk management increasingly mandate low-smoke materials in critical infrastructure spaces. At 1.6 mm diameter, this cordage occupies 40% of the cross-section of legacy 3 mm trunks—opening airflow gaps in dense patch panels, reducing cabinet temperature rise 3-5°C, and allowing finger access to release tabs without depressing adjacent connectors.