The JBX42607 5m FC/APC to ST/UPC duplex singlemode fiber patch cable represents an essential component for modern optical fiber networks. This professional-grade cable is designed to deliver reliable, high-speed signal transmission in demanding environments where network performance and data integrity are critical. Key Technical Specifications: This duplex patch cable features dual 9/125 singlemode fiber strands with G.657.A1 fiber type, providing excellent bend radius performance while maintaining optimal signal quality. The FC/APC (Angled Physical Contact) to ST/UPC (Straight) connector combination enables crossover Type A to B polarity configuration, the industry standard for duplex patch cord applications. With low insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB, this cable minimizes signal degradation across both 1310nm and 1550nm wavelengths. Durable Construction: The 1.8mm outside diameter plastic jacket is OFNR (Optical Fiber Non-conductive Riser) rated, making it suitable for installation in vertical runs and plenum spaces. The compact yellow jacket ensures easy identification and routing throughout your network infrastructure. RoHS/ELV compliance guarantees environmental responsibility and regulatory adherence. Applications and Use Cases: Ideal for telecommunications facilities, data centers, enterprise networks, and telecommunications equipment installations. Perfect for applications requiring reliable single-mode signal transmission over moderate distances with minimal power loss. Warranty and Support: Backed by a comprehensive 90-day limited warranty and tested to ANSI/TIA/EIA-455-171-A-2001 standards. TAA compliant for government procurement. Custom lengths available upon request. Ships free on orders over $99 from multiple US locations (Danville, CA; Fort Worth, TX; Beaufort, SC).