The JBX42320 SC/APC to FC/UPC duplex singlemode fiber patch cable represents enterprise-grade connectivity for telecommunications infrastructure. At 45 meters, this cable bridges extended distances while maintaining signal integrity across critical network applications. **Technical Specifications:** This duplex patch cable features a 9/125 singlemode core constructed from G.657.A1 glass fiber, delivering superior performance for long-distance signal transmission. The cable exhibits excellent attenuation characteristics: 0.25 dB/km at 1310 nm and 0.35 dB/km at 1550 nm wavelengths. Insertion loss measurements of ≤0.35dB (with typical performance of 0.15dB) and return loss ≥20dB exceed industry requirements, ensuring minimal signal loss across the full cable length. **Connector Configuration:** The SC/APC (angled physical contact) to FC/UPC (straight physical contact) configuration provides Type A to B crossover polarity, the most common duplex patch cord arrangement. This connector pairing enables seamless integration with existing network infrastructure while supporting both APC and UPC endpoint configurations. **Compliance & Safety:** Fully TAA compliant for government procurement and RoHS/ELV certified per EU directive 2002/95/EC. The OFNR riser-rated jacketing meets building code requirements for in-wall installation, while the 1.8mm outside diameter ensures compatibility with standard conduit and cable management systems. **Applications:** Ideal for data center cabling, telecommunications networks, CATV systems, and high-speed data transmission environments. The yellow jacket facilitates quick identification in dense cable environments. **Customization & Support:** Custom length options available to match specific installation requirements. Manufactured with quality standards tested per ANSI/TIA/EIA-455-171-A-2001. Ships from multiple US locations with free standard shipping on orders exceeding $99. Includes 90-day limited warranty.