QSFP-transceivermodule BlueOptics QSFP-40G-ESR4-NA-BO 40 Mbit/s 850 nm

The BlueOptics QSFP-40G-ESR4-NA-BO is a QSFP form-factor fiber optic transceiver module designed for 40 Gigabit Ethernet links over multimode fiber. It operates at an 850 nm wavelength, supports a maximum data rate of 40 Mbit/s and reaches up to 300 m on appropriate multimode fiber using an MTP/MPO connector. The module is lightweight (approximately 40 g) and specifies a mean time between failures (MTBF) of around 1,000,000 hours, offering long operating life for data center and high-density networking installations.

Advantages

The transceiver follows MSA-compliant QSFP standards and is engineered for interoperability with hardware that supports 40GBASE-ESR4 optics, providing simultaneous transmit and receive capability across multiple fibers via MPO/MTP. Built with component selection aimed at reliability, it supports Digital Diagnostics Monitoring (DDM/DOM) for real-time monitoring of voltage, temperature, laser bias current and optical power. Compact size and standardized mechanical/electrical interfaces simplify installation and replacement in switches, routers and storage systems.

Suitable for

• 40 Gigabit Ethernet links in data centers and aggregation layers
• High-density switch-to-switch or switch-to-server interconnects over multimode fiber
• Fibre Channel over Ethernet (FCoE) or SDH/SONET transport where 40G links are required
• Environments requiring remote optical diagnostics and predictable MTBF

Key specifications

• Form factor: QSFP
• Maximum data transfer rate: 40 Mbit/s
• Wavelength: 850 nm
• Maximum transfer distance over multimode fiber: 300 m
• Connector type: MTP/MPO
• Interface type: 40 Gigabit Ethernet
• Weight: 0.04 kg
• Digital Diagnostics Monitoring (DDM/DOM) support: yes
• Mean Time Between Failures (MTBF): ≈1,000,000 hours

How to use

Install the QSFP transceiver into a compatible QSFP port on a switch, router or storage system following the host device manufacturer’s hot-plug procedures. Connect an MPO/MTP multimode fiber patch cable between transceivers or to a patch panel; ensure the fiber type and patch cabling meet the specified distance and mode requirements. Enable or verify link settings on the network devices for 40G operation and, if required, enable DDM/DOM reporting in the host system to monitor operational parameters. Follow electrostatic discharge (ESD) precautions and keep protective dust caps on the connector when the module is not in use.

Recommendations

Use OM3/OM4 multimode fiber and high-quality MPO/MTP patch cords to achieve rated distances and consistent performance. Verify compatibility with the target hardware and firmware, and test the module in your environment if planned for critical links. Regularly monitor DDM/DOM metrics to detect early signs of degradation and schedule preventive maintenance when parameters drift outside recommended ranges.