The JBX01967 100BASE-BX20-D SFP transceiver is a premium optical networking component engineered for professional-grade, long-distance fiber optic communications. This module represents the ideal solution for network administrators requiring extended reach beyond standard SFP capabilities. **Key Technical Features:** Operating at 100MB data rates, the BX20-D utilizes single-mode fiber (9/125) technology to achieve impressive 20km transmission distances. The simplex LC/UPC connector design ensures reliable connections with minimal signal degradation, while the unidirectional BiDi architecture enables efficient bandwidth utilization. Dimensions of 5x4x2 inches make it compatible with standard SFP slots in network equipment. **Performance & Reliability:** This transceiver maintains exceptional performance across operating temperatures from 0 to 70°C (32 to 158°F), ensuring stable operation in diverse environmental conditions. The metal case with integrated laser transmitter provides superior electromagnetic shielding and thermal management. SFF-8472 qualification confirms compliance with industry standards, while extended-reach BiDi capability exceeds typical IEEE 802.3ah limitations. **Safety & Compliance:** Multiple certifications including Class 1 Laser, TUV, UL/FDA (21CFR 1040.10), and LN #50 7/2001 demonstrate commitment to safety. Full RoHS and ELV directive compliance (EU 2002/95/EC) ensures environmental responsibility and meets global regulatory requirements. **Compatibility & Integration:** Designed as a direct Juniper EX-SFP-FE20KT15R13 replacement, this module integrates seamlessly into existing Juniper network infrastructure. Custom brand programming is available for OEM applications, providing flexibility for enterprise deployments. **Warranty & Support:** Backed by a 90-day limited warranty with free standard shipping on orders over $99. Ships from convenient locations in Danville, CA and Beaufort, SC for rapid delivery. Ideal for telecommunications, data center interconnect, campus networking, and carrier-grade applications requiring extended-range, reliable optical connectivity.