The JBX85189 4-meter SC/ST Duplex Singlemode Fiber Patch Cable represents the gold standard in fiber optic connectivity solutions. This professionally engineered patch cable is specifically designed for organizations requiring TAA compliance and dependable high-speed data transmission across network infrastructure. Key Features & Specifications: The cable features a robust 9/125 singlemode core construction, ideal for long-distance, high-bandwidth applications. With measured insertion loss of ≤0.35dB (typical 0.15dB) and return loss exceeding 20dB, it delivers superior signal integrity and minimal signal degradation. The Type A to B crossover polarity configuration is the industry standard for duplex patch cord applications, ensuring compatibility with existing network infrastructure. Physical Specifications: Measuring just 1.8mm in outside diameter, the cable maintains flexibility while providing robust protection. The OFNR riser-rated yellow jacket offers flame resistance suitable for in-building installations, while the bright yellow color facilitates quick identification in cable trays and wall penetrations. The duplex design accommodates simultaneous bidirectional data transmission. Compliance & Standards: Fully TAA compliant and manufactured to meet EU RoHS directives, this cable adheres to ANSI/TIA/EIA-455-171-A standards for attenuation testing. It incorporates G.657.A1 glass fiber technology, providing improved bend radius performance without compromising optical characteristics. Applications: Ideal for data centers, telecommunications facilities, enterprise network backbone installations, and any environment requiring reliable singlemode fiber connectivity. The 4-meter length accommodates mid-range equipment spacing typical in network racks and cabinet installations. Value & Support: Backed by a 90-day limited warranty and available in custom lengths for specialized applications, this cable provides exceptional long-term value. Free standard shipping on orders exceeding $99, with convenient shipping from multiple U.S. locations ensures rapid delivery. Tested attenuation specifications at both 1310nm (0.25dB/km) and 1550nm (0.35dB/km) provide confidence in performance across diverse wavelength applications.