The JBX43501 50m ST/APC to ST/UPC Simplex Singlemode Fiber Patch Cable represents a professional-grade solution for demanding fiber optic applications. Constructed with meticulous precision, this cable features a 9/125 singlemode core and G.657.A1 glass fiber composition, ensuring optimal performance for long-distance signal transmission at both 1310nm and 1550nm wavelengths. **Key Performance Features:** This simplex cable delivers exceptional optical characteristics with insertion loss of ≤0.35dB (0.15dB typical) and return loss ≥20dB, meeting ANSI/TIA/EIA-455-171-A-2001 standards. Attenuation specifications are verified at 1310nm (0.25dB/km) and 1550nm (0.35dB/km), providing reliable performance across critical communication bands. **Design & Construction:** The distinctive yellow jacket is riser-rated (OFNR), making it suitable for vertical cable runs in multi-story buildings while maintaining fire safety compliance. The compact 1.8mm outside diameter enables installation in conduit and tight spaces without sacrificing durability. Straight-through polarity ensures proper signal transmission. **Compliance & Standards:** TAA compliant and RoHS/ELV certified per EU directive 2002/95/EC, this cable meets federal procurement requirements and environmental regulations. Manufactured in Taiwan, US, or China with consistent quality control. **Versatility & Availability:** While specified at 50 meters, this cable is available in custom lengths to fit your specific installation requirements. The robust construction and tested performance make it suitable for telecommunications networks, data centers, enterprise installations, and mission-critical fiber optic systems. **Support & Warranty:** Backed by a 90-day limited warranty and supported by free standard shipping on orders over $99. Ships from multiple US locations for quick delivery.