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by Arista
Product Line: Arista QSFP-SR4
Product Type: Transceiver
Original price $41.00 - Original price $127.00
Original price
$41.00 - $127.00
Current price $41.00
Title: Used

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Product Description

The QSFP-SR4 Arista transceiver module features a four-channel full-duplex design capable of 40 Gigabit per second links over multimode fiber, supporting a maximum link length of 100m on OM3 and 150m on OM4 with a single 1x12 MPO receptacle. It is hot pluggable with an unretimed XLPPI electrical interface, operates within a temperature range of 0°C to 70°C, and incorporates built-in digital diagnostic functions, including optical power monitoring. This module uses VCSEL array technology, has a maximum power dissipation of <1.5W, and is suited for applications such as 40G Ethernet and Infiniband QDR.

Key Feature for the QSFP-SR4

  • What is the maximum link length supported by this transceiver module on OM3 and OM4 Multimode Fiber?
    The maximum link length is 100m on OM3 and 150m on OM4 Multimode Fiber.
  • Can you detail the form factor of the 40GBASE-SR4 module?
    The module has a Hot Pluggable QSFP+ form factor.
  • What type of electrical interface does the transceiver use?
    It uses an Unretimed XLPPI electrical interface.
  • What is the data rate per lane for this device?
    The data rate per lane is 10.3125 Gb/s.
  • What are the typical applications for this transceiver?
    Typical applications include 40G Ethernet, Infiniband QDR, and SATA/SAS3.
  • How does the device dissipate power?
    Max power dissipation is less than 1.5W.
  • What technology does the transceiver utilize for its operation?
    It utilizes reliable VCSEL array technology.
  • What are the minimum and maximum operating case temperatures?
    The operating case temperature ranges from 0°C to 70°C.
  • What type of diagnostic functions are built into the module?
    It has built-in digital diagnostic functions, including optical power monitoring.
  • Describe the power supply requirements for this module.
    The power supply voltage ranges from a minimum of 3.135V, typical 3.3V, to a maximum of 3.456V, with a current of 475mA.

Product Review

The Arista QSFP-SR4 transceiver module offers a practical solution for high-speed data transmission over multimode fiber, supporting distances up to 100m on OM3 and 150m on OM4. However, its reliance on proprietary interconnections may limit compatibility with non-Arista hardware. It features low power consumption below 1.5W and incorporates reliable VCSEL array technology along with built-in digital diagnostic functions, enhancing its performance and monitoring capabilities.


The Arista QSFP-SR4 is a high-performance, four-channel, full-duplex transceiver module designed for 40G Ethernet networks. Utilizing the QSFP+ hot pluggable form factor, this module provides an efficient upgrade path for data centers and high-performance computing networks. The module supports a maximum link length of 100 meters over OM3 Multimode Fiber (MMF) and 150 meters over OM4 MMF, catering to a wide range of deployment scenarios. At the core of the Arista QSFP-SR4 is the reliable Vertical-Cavity Surface-Emitting Laser (VCSEL) array technology, which ensures high-speed data transmission over multimode fiber cables. This technology is complemented by an unretimed XLPPI electrical interface, which facilitates seamless integration with existing network equipment. The transceiver's single 1x12 MPO receptacle allows for easy and secure fiber cable connections. Key features include: - A maximum power dissipation of less than 1.5W, ensuring energy-efficient operation. - Built-in digital diagnostic functions, including optical power monitoring, which aid in proactive network management and troubleshooting. - Compatibility with 40GBASE-SR4 Ethernet and the ability to breakout to 4 x 10GBASE-SR Ethernet, providing flexibility for network design and expansion. The QSFP-SR4 operates efficiently within a commercial temperature range, with a minimum operating case temperature of 0°C and a maximum of 70°C. This broad temperature range ensures reliable performance in diverse operating environments. The transceiver's power supply requirements are modest, with a current of 475mA and a voltage range from 3.135V (minimum) to 3.456V (maximum), with a typical operating voltage of 3.3V. Data rate per lane is an impressive 10.3125 Gb/s, facilitating 40 Gigabit per second links over multimode fiber. This high data rate makes the QSFP-SR4 an ideal solution for applications requiring high bandwidth, such as 40G Ethernet, Infiniband QDR, and SATA/SAS3 storage networks. In summary, the Arista QSFP-SR4 transceiver module offers a powerful and efficient solution for building and expanding high-speed networks. Its support for long link lengths, low power consumption, and high data rates, coupled with built-in diagnostic capabilities and a flexible form factor, make it a valuable component for any modern data center or high-performance computing environment.


Item Number Arista QSFP-SR4
Manufacturer Arista
Connection Type Proprietary Links
Module Type Quad-channel bidirectional transceiver
Form Factor QSFP+ Hot-Swappable
Maximum Reach 100m using OM3 MMF, 150m using OM4 MMF
Fiber Type Multimode Fiber
Connector Type 12-fiber MPO
Electrical Interface XLPPI without retiming
Power Consumption Less than 1.5W
Technology VCSEL Array
Diagnostics Integrated digital diagnostic monitoring
Speed 40Gbps over MMF
Temperature Range 0°C to 70°C
Standard Compliance 40GBASE-SR4 Ethernet
Breakout Capability 4x 10GBASE-SR Ethernet
Use Cases 40G Ethernet, Infiniband QDR, SATA/SAS3
Connector 38-pin configuration
Current Requirement 475mA
Lane Data Rate 10.3125 Gbps
Voltage Requirement (Minimum) 3.135V
Voltage Requirement (Typical) 3.3V
Voltage Requirement (Maximum) 3.456V

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