The JBX42517 5m ST/APC to ST/APC Duplex Singlemode Fiber Patch Cable represents professional-grade optical connectivity designed for mission-critical network infrastructure. This duplex configuration simultaneously transmits and receives fiber signals across two independent strands, making it ideal for bidirectional communication requirements. Technical Specifications: This cable features a 9/125 micrometer singlemode core, the industry standard for long-distance, high-bandwidth telecommunications. The G.657.A1 glass fiber specification provides bend-insensitive characteristics while maintaining superior performance. Attenuation performance meets rigorous ANSI/TIA/EIA standards, measuring 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm wavelengths. Connector & Polarity: The ST/APC (Angle Physical Contact) connectors deliver exceptional low loss connections (≤0.35dB insertion loss typical) with superior return loss performance (≥20dB). The Type A to B crossover polarity configuration is the industry standard for duplex patch cord applications, ensuring seamless integration with existing infrastructure. Compliance & Safety: This cable meets demanding regulatory requirements including TAA (Trade Agreements Act) compliance for government and federal projects. It holds RoHS/ELV certifications, confirming hazardous substance restrictions. The OFNR riser rating permits installation in non-plenum spaces without conduit, simplifying deployment in commercial buildings while maintaining fire safety standards. Applications & Use Cases: Ideal for data center backbone connections, carrier-grade telecommunications, university campus networks, and enterprise fiber infrastructure. The 5-meter length accommodates standard rack-to-rack distances while the bright yellow jacket facilitates easy identification and asset management. Available in Custom Lengths: Beyond the standard 5-meter configuration, custom length options are available to match your exact installation requirements. Our Danville CA, Fort Worth TX, and Beaufort SC distribution centers ensure rapid availability. Maintenance & Warranty: Durable construction with protective plastic accessories ensures years of reliable performance. Backed by a 90-day limited warranty, this cable represents excellent value for critical telecommunications applications.