QSFP Transceiver Module BlueOptics QSFP-40G-ESR4-CO-BO 40 Mbit/s 850 nm

The BlueOptics QSFP-40G-ESR4-CO-BO is a QSFP transceiver module for 40 Gigabit Ethernet applications using multimode fiber. It operates at a wavelength of 850 nm, supports a maximum data rate of 40 Mbit/s and a maximum transmission distance of up to 300 m over suitable multimode fiber. The module is housed in metal for mechanical durability and has an MTBF of 1,000,000 hours. It uses an MPO/MTP fiber connector and weighs approximately 40 g, making it compact and straightforward to install in compatible QSFP ports.

Advantages

The module conforms to QSFP MSA specifications and is designed for interoperability with hardware platforms that support 40GBASE-ESR4 transceivers. Metal housing provides mechanical protection and thermal stability while lightweight construction simplifies handling and installation. Built-in digital diagnostics (DDM/DOM) allow real-time monitoring of supply voltage, laser bias current, optical output and input power, and temperature when supported by the host hardware. The module is suitable for high-availability environments thanks to component selection and an extended MTBF.

Suitable for

• 40 Gigabit Ethernet links in data center switches and routers
• High-speed server interconnects and storage area networks
• Short-reach multimode fiber links up to 300 m
• Environments requiring remote optical diagnostics and monitoring

Key specifications

• Form factor: QSFP
• Data rate: up to 40 Mbit/s
• Wavelength: 850 nm
• Maximum reach over multimode fiber: 300 m
• Connector type: MPO / MTP
• Interface: 40 Gigabit Ethernet
• Housing: metal
• Weight: approx. 0.04 kg
• Digital diagnostics: DDM/DOM (subject to host support)
• MTBF: 1,000,000 hours

How to use

Install the transceiver into a compatible QSFP port according to the equipment vendor's instructions, ensuring the host device supports 40GBASE-ESR4 modules and the DDM/DOM function if diagnostic data is required. Connect an MPO/MTP multimode fiber patch cord to the transceiver and route the cable to the corresponding port or patch panel. Verify link state and monitor diagnostic parameters through the host system to confirm correct operation. Handle the module by the edges and keep protective caps on the fiber connector when not in use to avoid contamination.

Recommendations

Use OM3 or OM4 multimode fiber for optimal reach and performance up to the specified 300 m. Ensure proper cleaning of MPO/MTP connectors before installation and confirm host compatibility with 40GBASE-ESR4 optics and digital monitoring features. For redundancy and high-availability deployments, plan link aggregation or redundant paths and monitor the transceiver's diagnostic parameters regularly.