The JBX01373 100GBASE-BX20-U QSFP28 Transceiver represents cutting-edge optical networking technology designed for modern high-speed data center and wide area network deployments. This advanced optical module combines exceptional performance with proven reliability, making it an ideal choice for network administrators seeking to expand their infrastructure with confidence. **Key Technical Features:** Operating at 100Gbps with an impressive 20-kilometer reach over single mode fiber, this transceiver utilizes industry-standard 9/125μm fiber cores to minimize signal degradation over extended distances. The simplex LC/UPC connector design enables straightforward installation and predictable performance in complex network topologies. Its compact 5x4x2 inch dimensions fit within standard QSFP28 cage designs, maximizing port density in fiber distribution systems. **Performance & Reliability:** Manufactured to IEEE 802.3bm and QSFP28 MSA specifications, this module delivers consistent, predictable performance. The integrated metal case with precision laser transmitter ensures thermal stability and optical accuracy. With a 90-day limited warranty and RoHS/ELV compliance, it meets environmental and safety requirements across global markets. **Compatibility & Integration:** Directly compatible with Juniper networking equipment as a drop-in replacement for the QSFP-100G-BX20U module, eliminating integration concerns. Qualified Class 1 laser certification alongside TUV, UL, and FDA approvals (21CFR 1040.10) provides multi-jurisdictional deployment flexibility. Custom brand programming is available for OEM requirements. **Ideal Applications:** Perfect for data center campus interconnects, metropolitan area networks, disaster recovery links, and long-reach optical backbone expansion. The 20km single mode capability bridges facility-to-facility connections without requiring intermediate regeneration. **Shipping & Support:** Ships from convenient U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders over $99. Professional optical networking support ensures successful deployment.