| Part Number | ESBQLE31-K40C | Distance | 40km |
| Form Factor | QSFP28 | Connector | LC duplex |
| Wavelength | 1271/ 1291/1311/1331nm | Transmitter | EML |
| Receiver | PIN | Media | Single-Mode Fiber?(SMF) |
| Power Consumption | <5W | Protocol | 100G Base Ethernet |
| Case Temperature(℃) | C: 0℃ to +70℃ |
QSFP28 MSA compliant
Hot pluggable 38 pin electrical interface
4 LAN-WDM lanes MUX/DEMUX design
4x25G electrical interface
Maximum power consumption <5W
LC duplex connector
Supports 103.125Gb/s aggregate bit rate
Up to 40km transmission on single mode fiber
Operating case temperature: 0℃ to 70℃
Engineered for high-performance 100G ER4 applications, ESOPTIC’s QSFP28 100G 40KM optical transceiver supports up to 40km reach over SMF using a 1310nm wavelength with FEC. The module complies with the QSFP28 MSA and IEEE 802.3ba 100GBASE-ER4 standards, ensuring broad compatibility and reliability. Featuring four CWDM channels and integrated DFB lasers, the QSFP 100G ER4 transceiver is optimized for high-density 100G deployments in metropolitan, long-reach enterprise, and 5G backhaul networks. ESOPTIC guarantees consistent quality and dependable performance across every link.
Metropolitan Core Interconnect
In metro networks where long-distance, high-capacity interconnects are critical, the ESOPTIC 100G ER4 transceiver delivers seamless 40km transmission over single-mode fiber without requiring external amplification. Fully compliant with QSFP28 ER4 standards, this module is ideal for bridging data centers across campuses or between aggregation nodes. With its compact QSFP28 form factor and low power consumption, the QSFP 100G ER4 simplifies dense deployments while maintaining superior signal integrity.
5G Fronthaul & Enterprise Backbone
For next-gen 5G fronthaul and large-scale enterprise backbones, ESOPTIC’s QSFP28 100G 40KM solution provides a robust, long-reach option. Operating at 1310nm with integrated FEC and DFB lasers, it supports low-latency, high-bandwidth transport up to 40km—ideal for connecting baseband units to centralized data processing sites or extending campus networks. The 100G 40KM transceiver ensures carrier-grade performance where uptime and reliability are mission-critical.
ESOPTIC is equipped with a comprehensive range of professional testing equipment designed to assess various parameters of optical products.
This ensures the highest performance, quality, and stability of optical transmission in all of our products.
Packing of module products
Put the qualified products into the corresponding model blister box packaging.
The bottom, surface and side of the carton are filled with one piece of anti-static foam to protect the product.According to the requirements of the packing quantity, put the blister box box of the product into the packaging carton. If the space between the blister boxes is large, use a piece of anti-static foam to put it in the middle. The empty space in the end box must be filled with anti-static foam to ensure that it will not be damaged during transportation.
The outer case label is attached to the side position of the outer case,Label the outer case after sealing.
At the time of delivery, the entire outer box should be wrapped with at least 2 layers of wrapping film protection.
