The ECOM XQ+100G-LC20D is a high-performance 100G QSFP28 optical transceiver designed for long-range data transmission up to 20km over single-mode fiber (SMF). It operates at a 1310nm wavelength and utilizes an EML laser for efficient optical transmission. This module is compliant with IEEE 802.3ba 100GBASE-LR4 and the QSFP28 MSA (Multi-Source Agreement), ensuring seamless integration into various networking environments. This hot-pluggable module is widely used in data centers, metro networks, and enterprise networking environments where high-speed and long-distance connectivity is required. With LC duplex connectors, it supports full-duplex communication, providing a stable and efficient link between networking devices. One of its key features is Digital Diagnostic Monitoring (DDM/DOM), which enables real-time monitoring of crucial parameters like temperature, voltage, optical output power, optical input power, and laser bias current. This enhances reliability by allowing proactive maintenance and troubleshooting. With a low power consumption of ≤ 4.5W, the ECOM XQ+100G-LC20D is optimized for energy efficiency without compromising performance. The transceiver supports 3.3V power supply, making it compatible with industry-standard network equipment. Built with high-quality materials, this module ensures superior performance, longevity, and reliability. It undergoes rigorous testing to comply with international standards such as RoHS, CE, and FCC, ensuring environmental safety and electromagnetic compatibility. This 100G QSFP28 transceiver is ideal for applications that require long-distance, high-speed data transmission, including data center interconnects, high-performance computing (HPC), cloud networking, and backbone networks. It provides seamless compatibility with leading networking equipment from major vendors.