The JBX02220 1000BASE-EX SFP transceiver represents a premium solution for organizations requiring extended-range Gigabit Ethernet connectivity across single-mode fiber networks. This professional-grade optical module delivers 1GB data rates with exceptional reliability over distances up to 40 kilometers, making it an essential component for enterprise networks, service providers, and large campus deployments. **Key Technical Specifications:** Operating at 1310nm wavelength, the JBX02220 utilizes industry-standard 9/125 single-mode fiber architecture to minimize signal degradation and maximize transmission distance. The duplex LC/UPC connector interface ensures optimal light coupling with minimal insertion loss, while the module's 5x4x2mm compact form factor integrates seamlessly into standard SFP ports without requiring additional adapter hardware. **Performance & Reliability:** Qualified to IEEE 802.3z standards and SFF-8472 specifications, this transceiver undergoes rigorous testing to ensure compatibility with Arista SFP-1G-EX equipment and similar enterprise-grade network infrastructure. The metal case housing protects the integrated laser transmitter from environmental interference, while Class 1 laser safety certification and dual thermal management capabilities ensure consistent performance across operating temperatures from 0 to 70°C (32-158°F). **Compliance & Certifications:** Fully compliant with EU RoHS Directive 2002/95/EC and ELV requirements, the JBX02220 meets FDA 21CFR 1040.10 laser safety standards and carries TUV and UL certifications. These credentials verify adherence to international environmental and safety protocols, making this module suitable for regulated industries and compliance-sensitive deployments. **Business Value:** With free standard shipping on orders exceeding $99 and a 90-day limited warranty, the JBX02220 minimizes total cost of ownership while protecting your investment. Custom brand programming options enable seamless integration with existing network management systems, while the module's OEM replacement capability (Arista SFP-1G-EX) simplifies procurement and inventory management. **Ideal Applications:** Perfect for metropolitan area networks (MANs), inter-building connectivity, disaster recovery linkages, and enterprise backbone upgrades. The 40km range significantly extends network reach while maintaining Gigabit speeds, making this transceiver an economical alternative to higher-speed but costlier 10GB+ modules for distance-critical applications.