Product Description

FS QSFP-SR4-40G Compatible 40GBASE-SR4 QSFP+ Optical Transceiver Module (MMF, 850nm, 150m, MTP/MPO, DOM)

The FS QSFP-SR4-40G transceiver module is designed for high-speed data communications and is compatible with 40GBASE-SR4 interfaces. This QSFP+ module adopts 12-fiber MTP/MPO male connectors and can reach link distances of up to 150 meters over OM4 multi-mode fiber (MMF) or 100 meters over OM3 MMF. It is fully compliant with QSFP+ MSA, IEEE 802.3ba 40GBASE-SR4, and can break out to 4x10GBASE-SR standards, ensuring interoperability with all standard 40GBASE-SR4 interfaces.

Digital diagnostic monitoring (DOM) functions are available via the I2C interface, providing real-time access to the transceiver’s operating parameters. This easy-to-install, hot-swappable transceiver is suitable for various applications, including data centers, campus and computing networks, and interconnections within and between switches, routers, NICs, and transport equipment.

Key Features

  • Form Factor: QSFP+
  • Data Rate: 41.25Gbps (4x 10.3125Gbps)
  • Wavelength: 850nm
  • Max Cable Distance:
    • 150m over OM4 MMF
    • 100m over OM3 MMF
  • Connector: MTP/MPO-12 Male
  • Media: Multi-Mode Fiber (MMF)
  • Transmitter Type: VCSEL (Vertical Cavity Surface Emitting Laser)
  • Receiver Type: PIN Photodiode
  • Digital Diagnostic Monitoring (DOM): Supported
  • Power Consumption: <1.5W
  • Core Size: 50µm
  • Extinction Ratio: >3dB
  • Modulation: NRZ (Non-Return to Zero)
  • Host FEC: Supported
  • Bit Error Ratio (BER): 1E-12
  • Commercial Temperature Range: 0°C to 70°C (32°F to 158°F)
  • Protocols: IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636


Attribute Details
Part Number QSFP-SR4-40G
Vendor Name FS
Form Factor QSFP+
Max Data Rate 41.25Gbps (4x 10.3125Gbps)
Wavelength 850nm
Max Cable Distance 150m@OM4, 100m@OM3
Connector MTP/MPO-12 Male
Media MMF
Transmitter Type VCSEL
Receiver Type PIN
TX Power -7.1 to 1.9dBm
Receiver Sensitivity < -10.3dBm
Power Budget 3.5dB
Receiver Overload 2.4dBm
Power Consumption < 1.5W
Core Size 50µm
Extinction Ratio >3dB
Modulation NRZ
Host FEC Supported
Bit Error Ratio (BER) 1E-12
Commercial Temperature Range 0 to 70°C (32 to 158°F)
Protocols IEEE 802.3ba, QSFP+ MSA, SFF-8436, SFF-8636


  • Data Centers: High-speed data transmission within and between data centers.
  • Campus Networks: Interconnect various buildings or sections of a campus network.
  • Computing Networks: Enhance the performance and connectivity of computing clusters.
  • Switches, Routers, NICs: Ensure reliable and high-speed interconnections.
  • Transport Equipment: Optimize optical links and network infrastructure.

The FS QSFP-SR4-40G transceiver module offers a reliable and high-performance solution for 40GBASE-SR4 applications, providing efficient data transmission and seamless integration with existing network infrastructure.

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