The JBX42639 SC/APC to LC/UPC duplex singlemode fiber patch cable represents a premium solution for mission-critical network infrastructure. Engineered with precision-cut connectors and low-loss coupling technology, this 7-meter cable delivers consistent performance in demanding telecommunications environments. Key Technical Features: This cable utilizes G.657.A1 grade glass fiber with a 9/125 micrometer core specification, optimized for single-mode transmission across C-band (1550nm) and L-band (1310nm) wavelengths. The SC/APC (Angle Polished Connector) on one end and LC/UPC (Ultra Physical Contact) on the other provide Type A to B crossover polarity configuration—the industry standard for duplex patch cords. With attenuation rates of 0.25 dB/km at 1310nm and 0.35 dB/km at 1550nm, signal integrity remains exceptional across extended runs. Performance & Reliability: The cable achieves typical insertion loss of 0.15dB with maximum specification of ≤0.35dB, ensuring minimal signal degradation. Return loss exceeding 20dB prevents back-reflection issues that could compromise network stability. All testing complies with ANSI/TIA/EIA-455-171-A-2001 standards, guaranteeing consistent quality. Compliance & Safety: TAA-compliant design meets U.S. procurement requirements. RoHS/ELV certification ensures environmental responsibility. OFNR (Riser Rated) jacketing provides superior flame resistance for building code compliance in vertical installations. Application & Compatibility: Ideal for connecting SC/APC equipped switches and routers to LC/UPC termination points. Commonly deployed in: - Data center backbone connections - Telecommunications switching equipment - DWDM multiplexer systems - Enterprise fiber networks Practical Advantages: The 1.8mm diameter cable compresses easily through tight conduit pathways. Yellow coloring simplifies network documentation and troubleshooting. Custom lengths available for specialized installations. 90-day warranty backs your investment. Ships from U.S. locations with free standard shipping on qualifying orders.