The JBX85199 SC/ST Duplex Singlemode Fiber Patch Cable is a professional telecommunications solution designed for high-performance network infrastructure. This 25-meter cable features precision-engineered 9/125 singlemode optical fiber with G.657.A1 specifications, making it ideal for long-distance signal transmission in datacenter, campus, and carrier environments. Key Technical Features: This duplex cable employs Type A to B crossover polarity configuration, the industry standard for patch cord applications. With insertion loss of just 0.15dB typical (≤0.35dB maximum) and return loss exceeding 20dB, it maintains signal integrity across both 1310nm and 1550nm wavelength windows. The cable has been attenuation-tested in accordance with ANSI/TIA/EIA-455-171-A standards, ensuring compliance with North American telecommunications specifications. Construction & Durability: The 1.8mm outer diameter with riser-rated (OFNR) yellow PVC jacketing provides excellent bend radius performance while delivering flame-resistant protection. The distinctive yellow jacket aids in cable identification and organization within complex installations. All materials comply with RoHS/ELV directives and EU 2002/95/EC regulations. Compliance & Availability: TAA compliant for government procurement, this cable meets federal acquisition requirements. Custom lengths are available to accommodate unique installation specifications. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, and Beaufort SC) with free standard shipping on orders exceeding $99. Applications: Perfect for connecting SC-terminated equipment to ST-terminated network devices in enterprise environments, educational institutions, and service provider facilities. Ideal for backbone, horizontal, or patch panel applications where singlemode performance is required. The 90-day limited warranty provides peace of mind for your network infrastructure investment.