Panduit F91ER1NB1SNM020 Opti-Core OS2 Single-Mode Fiber Patch Cord
The Panduit F91ER1NB1SNM020 delivers OS2 single-mode connectivity for long-haul fiber links in enterprise networks, data centers, and security installations requiring camera uplinks beyond 300 meters. This 20-meter patch cord pairs an LC Simplex connector with an LC/APC (angled physical contact) termination to suppress back-reflection in high-speed networks, critical for 10GbE, 40GbE, and fiber-to-camera deployments where return loss impacts link budget. The 1.6mm cable diameter and riser (OFNR) flame rating suit high-density patch panel builds and vertical cable runs in commercial buildings. Ships with standard insertion loss specification and carries Panduit's Opti-Core quality standard.
Key Features
- OS2 single-mode fiber (9/125µm) for distances up to 10km at 10GbE
- LC Simplex to LC/APC angled connector — reduces return loss for sensitive optics
- 1.6mm cable diameter — 40% slimmer than 2.0mm duplex for rack density
- Riser (OFNR) flame rating per NEC 770.179(D) — approved for vertical building runs
- 20-meter (65.6 ft) length — typical floor-to-IDF or cross-connect distance
- Yellow jacket — industry-standard single-mode identification
- Standard insertion loss — ships tested, compatible with structured cabling TIA-568 budgets
- Opti-Core sub-brand — Panduit's premium fiber line with lifetime warranty support
The LC/APC termination employs an 8° angled end-face polish that achieves -60 dB return loss, versus -40 dB for standard UPC (ultra-physical contact) connectors. This matters in DWDM/CWDM wavelength-division systems, high-speed Ethernet beyond 10GbE, and PON (passive optical network) deployments, where reflected light interferes with sensitive receiver optics and degrades bit-error rates. OS2 single-mode fiber uses a 9µm core diameter — roughly one-fifth the size of OM3/OM4 multimode — enabling attenuation as low as 0.35 dB/km at 1550nm and supporting distances up to 10km at 10GbE (versus 300m for OM3). When fiber-to-camera runs exceed 500 meters, or when you're planning 10GbE core switch uplinks, single-mode is the only option that meets link-budget requirements without expensive repeaters. The 1.6mm cable diameter is engineered for ultra-high-density patch panels: a 1U 48-port LC panel populated with 1.6mm simplex cords consumes 40% less bend radius than equivalent 2.0mm duplex, reducing cable-management stress and improving airflow in crowded racks. Simplex topology suits unidirectional fiber links (transmit/receive on separate strands), breakout legs from 12-strand or 24-strand backbone trunks, and BiDi transceiver pairs that use WDM to send/receive on a single fiber.
Security integrators deploy this patch cord in fiber-to-building camera uplinks — aggregating edge PoE switches back to a core switch over distances beyond copper's 100-meter limit — and in data center cross-connects linking compute racks to spine switches. Structured cabling professionals use it in main distribution area (MDA) and horizontal distribution area (HDA) builds per TIA-942 data center standards, and in enterprise campus backbones connecting telecommunications rooms across floors or buildings. The riser (OFNR) flame rating complies with NEC Article 770.179(D), permitting installation in vertical cable shafts, return-air spaces (when local AHJ accepts OFNR in lieu of plenum), and general building risers without metal conduit. At 20 meters (65.6 feet), this length covers typical floor-to-TR distances in commercial mid-rise buildings, IDF-to-MDF cross-connects in distributed enterprise networks, and rack-to-rack links in colocated data halls. The yellow jacket matches TIA/EIA-598-C color code for OS2 single-mode fiber, providing instant visual confirmation during MAC (moves, adds, changes) work and preventing accidental cross-patching with OM3/OM4 multimode (which uses aqua). LC Simplex connectors occupy half the panel footprint of duplex LC, relevant in ultra-high-density builds such as 288-fiber panels or 1U breakout enclosures feeding 48+ endpoints.
Compliant with EN 60332-1-2 vertical flame propagation testing, this patch cord meets European and international fire-safety standards for export projects and multinational deployments. Panduit Opti-Core products carry a limited lifetime warranty; each LC/APC connector ships with factory end-face inspection reports confirming geometry compliance with IEC 61300-3-35 (fiber height, apex offset, radius of curvature). When you're building a 10GbE backbone that can't tolerate multimode's distance limits, extending fiber camera uplinks past 500 meters, or deploying DWDM/CWDM gear sensitive to return loss, this patch cord delivers the angled-polish connector and OS2 performance you need without the cable-management bulk of 2.0mm duplex assemblies.
