The JBX42420 0.5m FC/APC to FC/UPC Duplex Singlemode Fiber Patch Cable represents professional-grade connectivity for telecommunications, data centers, and fiber optic network infrastructure. This dual-fiber duplex cable enables simultaneous bidirectional signal transmission, making it essential for full-duplex communication systems requiring high reliability and performance. Technical Excellence: Constructed with 9/125 singlemode fiber conforming to G.657.A1 specifications, this cable delivers superior performance across 1310nm and 1550nm wavelengths. Insertion loss measurements of ≤0.35dB (0.15dB typical) and return loss of ≥20dB exceed industry requirements, ensuring minimal signal degradation even in sensitive optical systems. All attenuation testing complies with ANSI/TIA/EIA-455-171-A standards, guaranteeing consistent quality and reliability. Connector Configuration: The FC/APC-to-FC/UPC configuration implements Type A to B crossover polarity, the most common duplex patch cord standard. APC (angled physical contact) connectors on one end provide superior return loss characteristics, while UPC (ultra-polished) connectors on the other facilitate seamless integration with existing network infrastructure. Build Quality and Compliance: Features a durable 1.8mm OD yellow OFNR (optical fiber non-conductive riser) rated jacket for safe installation in plenum and riser spaces. TAA-compliant construction meets federal procurement standards. RoHS/ELV directive compliance ensures environmental responsibility and regulatory adherence. Installation and Versatility: The 0.5m length provides flexibility for equipment rack interconnections, while custom lengths are available for specialized requirements. Manufactured across multiple facilities (Taiwan, USA, China) ensures availability and supply chain reliability. Ships from strategically located warehouses with free standard shipping on orders exceeding $99. Applications: Ideal for telecommunications networks, data center interconnects, CATV systems, fiber-to-the-home (FTTH) installations, and laboratory testing environments. The duplex configuration supports duplex communication systems, fiber aggregation, and signal distribution networks. Warranty and Support: Backed by a 90-day limited warranty, providing confidence in product reliability and manufacturer support for any defects or performance issues.