The JBX43589 ST/APC to FC/APC Singlemode Fiber Patch Cable represents professional-grade optical connectivity designed for mission-critical applications. This 40-meter simplex configuration features precision-engineered 9/125 singlemode fiber with G.657.A1 glass fiber composition, ensuring optimal performance across standard telecommunications wavelengths. Key Performance Specifications: This cable achieves exceptional attenuation ratings of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm, with typical insertion loss of just 0.15dB and maximum insertion loss of ≤0.35dB. The return loss specification of ≥20dB ensures minimal signal reflection, critical for maintaining data integrity in high-speed networks. All performance metrics are tested in accordance with ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing consistent quality. Durable Construction: The yellow riser-rated (OFNR) jacket provides flame resistance and electrical safety while making cable runs visually distinct for easier network management. The compact 1.8mm outer diameter facilitates installation in conduit and cable trays without compromising durability. The cable's straight-through polarity ensures direct signal transmission without complications. Compliance and Certifications: TAA compliant and RoHS/ELV certified per EU Directive 2002/95/EC, this cable meets rigorous government and enterprise procurement standards. Multi-sourced manufacturing (Taiwan, US, China) ensures availability and supply chain resilience. Applications and Use Cases: Ideal for data center interconnects, telecommunications infrastructure, campus network deployments, and government-regulated environments requiring compliance certification. The 40-meter length accommodates medium-distance connections while remaining flexible for installation in tight spaces. Customization and Warranty: Available in custom lengths to match specific installation requirements. Includes 90-day limited warranty covering manufacturing defects. Free standard shipping on orders over $99 from multiple US distribution centers (Danville CA, Fort Worth TX, Beaufort SC) ensures fast delivery and reduced lead times.