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by Brocade
Product Line: Brocade 40G-QSFP-LR4 Transceiver Module
Product Type: Transceiver
Original price $0.00 - Original price $468.00
Original price
$0.00 - $468.00
Current price $468.00
Title: Used

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Product Description

The 40G-QSFP-LR4 Brocade transceiver is designed for 10km optical communication applications, supporting a 40 Gbps data rate with four 10Gb/s electrical data inputs converted to four CWDM optical signals across wavelengths 1271nm, 1291nm, 1311nm, and 1331nm. It features an LC connector, utilizes SMF cable type, and operates within a transmitter power range of -7 to 2.3dBm, with receiver sensitivity of < -14dBm. This transceiver is compliant with the QSFP+ MSA, IEEE 802.3ba 40GBASE-LR4 standards, supports Digital Diagnostics Monitoring, and maintains performance within a broad temperature range (-40°C to 85°C storage, 0°C to 70°C operating), with a maximum power dissipation of < 3.5W.

Key Feature for the 40G-QSFP-LR4

  • What is the maximum data rate supported by the QSFP+ transceiver?
    The maximum data rate supported is 40Gbps.
  • How many input channels does the transceiver have, and what is its function?
    It has 4 input channels, converting 10Gb/s electrical data to 4 CWDM optical signals.
  • What are the wavelength ranges supported by this device?
    The wavelengths supported are 1271nm, 1291nm, 1311nm, and 1331nm.
  • What type of connector is used with this QSFP+ transceiver?
    An LC connector is used for connectivity.
  • Can you specify the cable type recommended for use with this transceiver?
    The recommended cable type is SMF (Single-Mode Fiber).
  • What is the maximum transmission distance supported by the device?
    The device supports a maximum distance of 10km.
  • What are the compliance standards of the QSFP+ MSA transceiver?
    It is compliant with QSFP+ MSA and IEEE 802.3ba 40GBASE-LR4 standards.
  • Does the transceiver support Digital Diagnostics Monitoring?
    Yes, it supports Digital Diagnostics Monitoring.
  • What is the operating temperature range for this transceiver?
    The operating temperature range is from 0 °C to 70 °C.
  • What are the power requirements for the transceiver?
    The maximum supply voltage ranges from -0.5V to 4.5V, and power dissipation is less than 3.5 W.

Product Review

The Brocade 40G-QSFP-LR4 transceiver offers a high capacity of 40 Gbps, suitable for long-distance optical communication up to 10km, making it ideal for extensive network infrastructure. However, it requires careful power management, with a maximum supply voltage range from -0.5V to 4.5V and a power dissipation under 3.5W, necessitating monitoring in high-demand environments. Additionally, its compliance with QSFP+ MSA and IEEE 802.3ba 40GBASE-LR4 standards, along with support for Digital Diagnostics Monitoring, ensures compatibility and ease of integration into existing network systems, though the strict operating temperature and humidity ranges may limit deployment in extreme conditions.


The Brocade 40G-QSFP-LR4 is a high-performance transceiver designed for 10km optical communication applications, offering a maximum data rate of 40Gbps. This transceiver converts 4 inputs channels of 10Gb/s electrical data into 4 CWDM optical signals, with wavelengths of 1271nm, 1291nm, 1311nm, and 1331nm. It is equipped with an LC connector and uses Single Mode Fiber (SMF) as its cable type, ensuring high-quality, long-distance transmission. One of the key features of the Brocade 40G-QSFP-LR4 is its high channel capacity, supporting up to 40 Gbps per transceiver. This capacity is critical for data center networks, high-performance computing clusters, and enterprise core and distribution layers where bandwidth-intensive applications are common. The transceiver's transmission data rate can reach up to 10.3Gbps per channel, making it suitable for various networking tasks that require high-speed data transfer. The Brocade 40G-QSFP-LR4 maintains a low power dissipation of less than 3.5W, contributing to energy-efficient operations in data centers. It is compliant with the QSFP+ MSA and IEEE 802.3ba 40GBASE-LR4, ensuring compatibility with a wide range of networking equipment. Additionally, it supports Digital Diagnostics Monitoring (DDM), allowing for real-time monitoring of the transceiver's operating parameters, which is crucial for maintaining the integrity and reliability of the network. Key specifications include: - TX Power range from -7 to +2.3dBm and receiver sensitivity of less than -14dBm, ensuring effective signal transmission and reception over distances of up to 10km. - Operating conditions are optimized for a broad range of environments, with a storage temperature range from -40°C to 85°C, an operating humidity range from 5% to 85%, and a case operating temperature range from 0°C to 70°C. These specifications guarantee reliable performance across various climatic conditions. - The maximum supply voltage ranges from a minimum of -0.5V to a maximum of 4.5V, accommodating a wide range of power supply standards. Moreover, the Brocade 40G-QSFP-LR4 is RoHS compliant and lead-free, reflecting a commitment to environmental sustainability without compromising performance. This transceiver is an ideal solution for organizations looking to enhance their network's capacity and performance while adhering to environmental standards. In summary, the Brocade 40G-QSFP-LR4 transceiver is designed for organizations that require high-speed, long-distance optical communication. Its adherence to industry standards, support for digital diagnostics monitoring, and compliance with environmental regulations make it a versatile and responsible choice for upgrading network infrastructure.


Part NumberBrocade 40G-QSFP-LR4
ApplicationOptical Networking for 10km Range
Bandwidth per Transceiver40 Gigabits per Second
Input ChannelsConverts 4 x 10Gbps Electrical Data to 4 Coarse Wavelength Division Multiplexing (CWDM) Optical Signals
Operational Wavelengths1271nm, 1291nm, 1311nm, 1331nm
Optical Connector TypeLC Duplex
Fiber TypeSingle-Mode Fiber (SMF)
Transmit Power Range-7 to +2.3 dBm
Maximum Transmission Speed40 Gbps
Maximum Range10 Kilometers
Minimum Receiver Sensitivity-14 dBm
Standards ComplianceQSFP+ Multi-Source Agreement (MSA) and IEEE 802.3ba 40GBASE-LR4
Energy ConsumptionLess than 3.5 Watts
Monitoring CapabilityIncludes Digital Diagnostics Monitoring
Environmental ComplianceRoHS Compliant, Lead-Free
Data Rate Per ChannelUp to 10.3 Gbps
Minimum Supply Voltage-0.5 Volts
Maximum Supply Voltage4.5 Volts
Lowest Storage Temperature-40°C
Highest Storage Temperature85°C
Minimum Operating Humidity5%
Maximum Operating Humidity85%
Minimum Case Operating Temperature0°C
Maximum Case Operating Temperature70°C

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