The JBX42545 3-meter ST/APC to FC/UPC duplex singlemode fiber patch cable is engineered for mission-critical fiber optic network installations. This professional-grade cable delivers exceptional performance and reliability in demanding telecommunications and data center environments. Technical Specifications: The cable features a 9/125 singlemode fiber core, the industry standard for long-distance, high-capacity signal transmission. The duplex configuration provides two independent fiber strands, enabling simultaneous bidirectional communication without crosstalk. With an outside diameter of just 1.8mm, this compact cable integrates seamlessly into existing infrastructure while maintaining flexibility for installation. Performance Characteristics: Tested attenuation rates of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensure minimal signal loss over extended distances. The low insertion loss (≤0.35dB typical) and high return loss (≥20dB) create optimal signal integrity for voice, video, and data transmission. These specifications comply with ANSI/TIA/EIA-455-171-A standards, guaranteeing consistent performance across diverse applications. Compliance and Installation: The yellow OFNR (riser-rated) jacket meets fire safety codes for vertical cable runs in multi-story buildings. TAA compliance ensures eligibility for government and institutional procurement. RoHS/ELV certification confirms environmental responsibility without compromising performance. The G.657.A1 glass fiber specification provides enhanced bend characteristics for easier installation in tight spaces. Connectivity Configuration: This cable implements Type A to B crossover polarity—the most common duplex patch cord configuration. ST/APC (Angled Physical Contact) connectors offer superior return loss, while FC/UPC (Ultra Physical Contact) connectors provide reliable connections in demanding environments. Applications: Ideal for telecommunications networks, data centers, campus networks, CATV systems, and any installation requiring dependable singlemode fiber connectivity. Custom lengths are available for specialized requirements. Warranty and Support: Backed by a 90-day limited warranty. Ships free on orders over $99 from multiple US locations for rapid delivery.