The JBX02161 1000BASE-BX20 SFP transceiver module represents a premium solution for organizations requiring extended-reach optical connectivity without the complexity and expense of deploying separate transmit and receive fibers. This advanced optical module utilizes bidirectional (BiDi) technology to transmit and receive data simultaneously over a single singlemode fiber strand, delivering exceptional value for long-distance network deployments. Technical Specifications & Performance: This transceiver operates at 1 Gigabit per second and supports transmission distances up to 20 kilometers over standard singlemode fiber (SMF) with a 9/125 micron core. The module leverages complementary wavelengths (1310nm transmit and 1550nm receive, or vice versa) to enable full-duplex communication on a single fiber. It fully adheres to the 1000BASE-BX20 standard as defined in IEEE 802.3ah and meets the extended SFF-8472 specifications for optical transceiver performance and reliability. Connectivity & Compatibility: Features a simplex LC/UPC connector that provides low-insertion-loss, high-return-loss connections essential for long-distance transmission. The module is specifically engineered for Arista network switches and directly replaces the SFP-1G-BXU20-35 OEM component. Its SFP form factor ensures seamless integration into existing Arista-based infrastructure without requiring hardware modifications. Reliability & Compliance: Manufactured with a robust metal case housing and integrated laser transmitter, this transceiver is engineered for demanding enterprise environments. It carries comprehensive safety certifications including Class 1 Laser designation, TUV, UL/FDA compliance per 21CFR 1040.10, and full RoHS/ELV compliance per EU directive 2002/95/EC. The operating temperature range of 0°C to 70°C accommodates both indoor data center and outdoor network cabinet deployments. Applications & Use Cases: Ideal for campus area network (CAN) interconnects, metropolitan area network (MAN) expansions, disaster recovery links, and long-distance backup connections. Perfect for organizations requiring high-performance optical connectivity between buildings, remote sites, or data centers without the infrastructure investment of deploying dual fiber runs. Warranty & Support: Included 90-day limited warranty provides peace of mind. Custom brand programming available for OEM and large-scale deployments. Ships from convenient U.S. locations with free standard shipping on orders exceeding $99. Maintenance Note: Ensure LC/UPC connectors remain clean and dust-free using industry-standard fiber cleaning materials. Avoid exposing the transceiver to direct laser light and maintain operating temperatures within specified ranges for optimal performance and longevity.