The JBX43379 40m SC/APC to ST/UPC Simplex Singlemode Fiber Patch Cable represents professional-grade optical connectivity for mission-critical applications. This cable combines precision engineering with proven reliability for telecommunications infrastructure, data centers, and enterprise networks requiring dependable fiber signal transmission. Key Features and Specifications: - Length: 40 meters of optical fiber - Fiber Type: 9/125 singlemode (G.657.A1 glass) - Connectors: SC/APC male to ST/UPC male (simplex configuration) - Insertion Loss: ≤0.35dB @ 0.15dB typical - Return Loss: ≥20dB - Attenuation: 0.25 dB/km @ 1310nm or 0.35 dB/km @ 1550nm - Outside Diameter: 1.8mm - Jacket: Riser-rated OFNR (suitable for commercial installations) - Color: Yellow for easy identification Compliance and Certifications: Fully TAA compliant for government procurement, RoHS/ELV certified, and manufactured to ANSI/TIA/EIA-455-171-A-2001 standards. This cable meets EU Directive 2002/95/EC requirements, making it suitable for regulated environments and international installations. Applications and Use Cases: Perfect for connecting SC/APC and ST/UPC terminations in optical networks, telecommunications closets, fiber-to-the-premises (FTTP) installations, and laboratory test setups. The straight-through polarity design ensures straightforward installation without adapter requirements. Customization and Availability: Available in custom lengths beyond the standard 40m, allowing flexibility for unique installation requirements. Ships from multiple U.S. locations (Danville CA, Fort Worth TX, Beaufort SC) with free standard shipping on orders exceeding $99. Quality Assurance: Backed by a 90-day limited warranty and rigorously tested for attenuation performance. The combination of low insertion loss and high return loss ensures minimal signal degradation and reflection, critical for high-speed data transmission. This cable represents an excellent balance of performance, compliance, and value for professional fiber optic installations.