The JBX43590 ST/APC to FC/APC singlemode fiber patch cable represents a premium solution for professional fiber optic network installations. This 45-meter cable is specifically designed to connect equipment with dissimilar connector types while maintaining superior optical performance and signal integrity. **Technical Excellence:** Built with a 9/125 singlemode core and G.657.A1 glass fiber, this cable supports long-distance, high-bandwidth applications. The attenuation rate of 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm ensures minimal signal loss even across extended distances. The ultra-low insertion loss of ≤0.35dB (typical 0.15dB) and high return loss of ≥20dB guarantee clean signal transmission critical for voice, video, and data applications. **Connector Specifications:** The ST/APC (Straight Tip/Angled Physical Contact) to FC/APC (Ferrule Connector/Angled Physical Contact) configuration provides industry-standard connectivity with excellent mechanical stability. Both connectors feature angled polishing for superior return loss performance, reducing signal reflection and crosstalk. **Installation & Safety Features:** The distinctive yellow OFNR (Optical Fiber Non-conductive Riser) rated jacket ensures flame safety compliance for in-building vertical installations. The 1.8mm outside diameter provides flexibility for tight routing in equipment racks and cable trays. Custom lengths are available for unique installation requirements. **Compliance & Quality Assurance:** TAA compliant and manufactured to RoHS/ELV standards, this cable meets stringent government procurement requirements. All attenuation measurements are tested according to ANSI/TIA/EIA standards. The 90-day limited warranty reflects our confidence in product reliability. **Applications:** Ideal for telecommunications infrastructure, data center interconnects, enterprise LANs, CATV systems, and any installation requiring single-mode fiber connectivity. The simplex (single fiber) configuration is perfect for unidirectional signal transmission. Order with confidence: Free standard shipping on orders over $99, with fast processing from multiple U.S. distribution centers.