The JBX43681 50-meter LC/UPC to FC/APC simplex singlemode fiber patch cable is engineered for telecommunications professionals and IT infrastructure specialists who demand precision, reliability, and performance in fiber optic networks. **Technical Specifications:** This cable utilizes 9/125 singlemode fiber with G.657.A1 glass specification, offering superior bend radius performance while maintaining compatibility with standard G.652.D installations. The LC/UPC (Ultra Physical Contact) connector on one end provides low-loss termination, while the FC/APC (Angled Physical Contact) connector delivers angled-face technology for enhanced return loss performance exceeding -20dB. The simplex configuration features a single fiber strand suitable for unidirectional signal transmission. **Performance & Compliance:** Tested to ANSI/TIA/EIA-455-171-A-2001 standards, the cable demonstrates insertion loss of ≤0.35dB maximum (typically 0.15dB) at both 1310nm and 1550nm wavelengths. Attenuation specifications of 0.25dB/km at 1310nm and 0.35dB/km at 1550nm ensure signal integrity across the 50-meter span. TAA compliance and RoHS/ELV directives make this cable suitable for government contracts and environmentally conscious organizations. **Installation & Deployment:** The bright yellow OFNR (Optical Fiber Nonconductive Riser) rated jacket provides code compliance for in-building installations, particularly in plenum and riser pathways. The 1.8mm diameter enables efficient cable management in crowded duct systems and equipment racks. Straight-through polarity ensures seamless integration with matching network equipment. **Applications:** Ideal for data center interconnects, campus backbone networks, telecommunications infrastructure, and laboratory testing environments. The 50-meter length accommodates medium-distance spans without requiring expensive active components or regeneration. **Warranty & Support:** Backed by a 90-day limited warranty and available in custom lengths for specialized requirements. Free standard shipping on orders exceeding $99, with fulfillment from strategically located distribution centers across the United States.