The JBX02203 1000BASE-BX40-U SFP transceiver is a high-performance optical module engineered for mission-critical network applications requiring extended single-mode fiber transmission. Designed to replace the Juniper EX-SFP-GE40KT13R15, this transceiver delivers superior reliability and performance for networks demanding 40km reach capabilities. Key Technical Features: This transceiver operates at 1GB data rates using wavelength-division multiplexing (WDM) technology, transmitting at 1310nm and receiving at 1550nm for full-duplex bidirectional communication over simplex fiber. Qualified to SFF-8472 specifications and extended-reach BiDi standards beyond IEEE 802.3ah, it ensures compatibility with enterprise-grade networking equipment. Physical Specifications: Measuring 5x4x2mm with a metal case construction, the JBX02203 fits standard SFP form factor slots. The simplex LC/UPC fiber connector provides secure, low-loss connections with standard fiber management practices. Compliance & Safety: Full RoHS/ELV compliance (EU directive 2002/95/EC) ensures environmental responsibility. Class 1 Laser certification and FDA compliance (21CFR 1040.10) guarantee safe operation in professional environments. Operational Advantages: The 40km single-mode fiber capability makes this ideal for metro networks, campus-wide deployments, and telecommunications infrastructure. Standard 9/125µm fiber compatibility reduces deployment costs while maintaining performance standards. Custom brand programming is available for enterprise environments. Support & Warranty: Backed by a 90-day limited warranty and available for rapid shipment from US locations (Danville, CA and Beaufort, SC), this transceiver provides reliable long-term investment protection for network infrastructure upgrades.