The JBX02176 is a premium 1000BASE-BX40-D SFP optical transceiver engineered for extended-distance gigabit Ethernet transmission. Designed to support 40km reach over single-mode fiber, this module excels in scenarios where traditional short-reach transceivers fall short, making it essential for campus networks, metropolitan area networks (MANs), and service provider deployments. Key Technical Features: This bidirectional transceiver utilizes wavelength division multiplexing at 1490nm (transmit) and 1310nm (receive) to enable full-duplex communication across a single fiber strand. The simplex LC/UPC connector ensures straightforward installation and maintains signal integrity, while the 9/125 singlemode fiber core delivers superior performance over extended distances. Performance & Reliability: Operating at 1GB data rates with 40km reach, the JBX02176 meets SFF-8472 extended-reach BiDi specifications, exceeding standard IEEE 802.3ah requirements. The metal case with integrated laser transmitter provides durability and thermal management, supporting consistent performance across a 0-70°C operating temperature range. Compliance & Safety: Fully RoHS and ELV compliant, this transceiver meets stringent safety standards including Class 1 Laser classification and FDA 21CFR 1040.10 regulations. International certifications include TUV and UL approval, ensuring compatibility with global network infrastructure standards. Juniper Compatibility: As a direct EX-SFP-GE40KT14R13 compatible replacement, the JBX02176 integrates seamlessly into Juniper networking equipment without requiring configuration changes or firmware updates. This plug-and-play compatibility reduces deployment time and minimizes network downtime. Applications: Ideal for enterprise data centers, ISP backbone networks, metropolitan Ethernet services, and long-distance network extensions. Supports applications requiring reliable gigabit transmission beyond conventional reach limitations. With custom brand programming available and backed by a 90-day limited warranty, the JBX02176 represents a cost-effective solution for extended-reach optical networking. Free standard shipping on orders exceeding $99 from our California and South Carolina distribution centers ensures rapid deployment.