The JBX88391 ST/ST duplex singlemode fiber patch cable represents a robust solution for professional-grade fiber optic network installations. This 50-meter cable combines precision engineering with proven reliability, making it the preferred choice for telecommunications professionals, data center technicians, and network integrators. Key Features: The cable features a 9/125 singlemode core with G.657.A1 specifications, delivering industry-leading optical performance. With insertion loss of just 0.15dB typical (≤0.35dB maximum) and return loss exceeding 20dB, signal integrity is maintained across the entire 50-meter span. Attenuation specifications of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm ensure optimal performance across standard telecommunications wavelengths. Technical Specifications: The duplex configuration provides two independent fiber strands in a single housing, enabling simultaneous bidirectional communication. ST/UPC connectors with Type A to B crossover polarity configuration represent the most common duplex patch cord standard. The 1.8mm outside diameter keeps installations compact and organized, while the OFNR riser-rated jacket permits vertical installations in building plenum spaces. Compliance and Standards: Fully TAA compliant for government and federal procurement requirements. Tested to ANSI/TIA/EIA-455-171-A-2001 standards with RoHS/ELV compliance ensuring environmental responsibility. The 90-day limited warranty provides peace of mind for critical infrastructure deployments. Applications: Ideal for telecommunications networks, data centers, enterprise LANs, and specialized fiber optic installations. The purple jacket aids identification in complex cable management scenarios. Available in custom lengths for specialized deployments. Ships from multiple U.S. locations with free standard shipping on orders exceeding $99.