The JBX02163 1000BASE-BX40-D SFP transceiver represents a premium solution for enterprises requiring high-performance, extended-reach optical connectivity. Designed specifically for long-distance deployments, this module achieves 1GB data transmission rates over distances up to 40 kilometers using single-mode fiber infrastructure. Technical Specifications: This transceiver operates using 1490nm and 1310nm bidirectional wavelengths, enabling full-duplex communication over a single fiber strand. The 9/125 micrometer core single-mode fiber ensures minimal signal loss and dispersion over extended distances. Simplex LC/UPC connectors provide secure, low-loss fiber termination with polished physical contact surfaces for optimal signal integrity. Key Features & Benefits: Full Arista compatibility (SFP-1G-BXD40 replacement) eliminates procurement complexity and integration challenges. The compact SFP form factor integrates seamlessly into existing network infrastructure without requiring chassis modifications. Metal construction with precision laser transmitter ensures durability and consistent performance in demanding environments. Extended 40km reach dramatically reduces backbone infrastructure costs by eliminating repeaters and signal regeneration equipment. Compliance & Certification: Comprehensive certifications including RoHS/ELV directives, Class 1 laser safety, FDA 21CFR 1040.10, TUV, and UL approvals guarantee enterprise-grade reliability and regulatory compliance. SFF-8472 qualification and extended-reach BiDi compliance beyond IEEE 802.3ah standards ensure interoperability with leading network platforms. Applications: Ideal for metro area networks (MANs), campus backbone connections, disaster recovery links, and service provider transport networks. Suitable for telecommunications infrastructure, financial institutions, healthcare networks, and large-scale data center deployments requiring long-distance, high-speed connectivity. Operational Excellence: Operates reliably across 0-70°C temperature ranges, supporting both indoor and climate-controlled outdoor installations. Custom brand programming available for OEM and enterprise integrators. Includes 90-day limited warranty and free standard shipping on orders exceeding $99. Manufactured in Vietnam and China to stringent quality standards.