400g osfp sr4
NVIDIA/Mellanox 400g switch
NVIDIA/Mellanox 400g switch
NVIDIA/Mellanox 400g switch
400g osfp sr4

Compatible OSFP-400G-SR4 400GBASE-SR4 OSFP Optical Transceiver Module for AI Networking

OSFP-400G-SR4
The OSFP-400G-SR4 is a high-speed parallel optical transceiver engineered for short-reach data center connectivity. Complying with the IEEE 802.3cm 400GBASE-SR4 standard and OSFP MSA specifications, it uses multimode fiber (MMF) to achieve a transmission distance of 100 meters over OM4 fiber (70 m over OM3). With its 4×106.25Gb/s PAM4 architecture and Ethernet compatibility, this optical module seamlessly integrates into existing 400G network infrastructure, enabling efficient bandwidth expansion within racks and rows without requiring extensive hardware upgrades.

Product Highlights
*400GBASE-SR4 OSFP optical transceiver
*Supports 100m over OM4 and 150m over OM5 multimode fiber
*Optimized for AI networking and GPU cluster connectivity
*PAM4 modulation with 4×100G electrical lanes
* Compatible with NVIDIA, Cisco, Arista, Huawei, H3C and Juniper platforms
*Low-latency interconnect for hyperscale cloud infrastructure
*Supports DOM monitoring
*Compliant with IEEE 802.3cm and OSFP MSA standards
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Brand Compatible With 400GBASE-SR4 OSFP Transceiver Module(OSFP Double Fiber , 400G, 850nm, 50m, MTP/MPO, DOM)

The 400G OSFP SR4 optical transceiver is a high-performance multimode optical module developed for AI networking, GPU clusters, and hyperscale cloud infrastructure.
Supporting 400GBASE-SR4 transmission over OM4 and OM5 multimode fiber, the OSFP optical transceiver provides high-density bandwidth, low latency, and reliable Ethernet connectivity for next-generation 400G deployments.
Its OSFP form factor offers enhanced thermal performance compared with traditional QSFP solutions, making it particularly suitable for modern AI fabrics, high-performance computing environments, and large-scale data center architectures.

Product Details

    Part Number:OSFP-400G-SR4
    Description:Description: OSFP optical module multimode, 400G, MPO-12/APC, operating temperature 0~70°C, 850nm, DOM
    Compatible with:H3C, HW, Cisco, HP, NVIDIA/Mellanox 400g InfiniBand switch,etc
     
    Data Rate
    Module Type
    Distance
    Wavelength
    Interface
    Temperature
    DOM
    400Gb/s
    OSFP
    50M
    850nm

    MPO-12/APC

    0~70℃
    Yes
     

    Specifications

    NVIDIA/Mellanox Ethernet CompatibleOSFP-400G-SR4Vendor NameFirstoptic
    Form FactorSingle-port OSFP Flat TopMax. Data Rate425Gbps (4x106.25Gbps)
    Wavelength850nmMax. Cable Distance30m@OM3/50m@OM4 or OM5
    ConnectorMPO-12/APCMediaMMF
    Transmitter TypeVCSELReceiver TypePIN
    TX Power-4.6~4dBmMinimum Receiver Power-6.3dBm
    Power Budget1.7dBReceiver Overload4.0dBm
    Max. Power Consumption8.5WExtinction Ratio2.5dB
    DDM/DOMSupportedCommercial Temperature Range0 to 70°C (32 to 158°F)
    Modulation (Electrical)4x100G-PAM4Modulation (Optical)4x100G-PAM4
    CDR (Clock and Data Recovery)TX & RX Built-in CDRInbuilt FECYes
    Core Size50/125µmPackaging TechnologyCOB
    MTBF7210148 Hours (@40°C, 60% CL)Application400G Ethernet
    3580900 Hours (@40°C, 90% CL)
    5016607 Hours (@50°C, 60% CL)
    2384800 Hours (@50°C, 90% CL)
    2323762 Hours (@70°C, 60% CL)
    1042265 Hours (@70°C, 90% CL)
    ProtocolsOSFP MSA Rev 5.0、IEEE 802.3ck、IEEE 802.3-2022Warranty3 Years
     

    AI Fabric Connectivity

    The 400G OSFP SR4 optical transceiver enables high-bandwidth AI fabric connectivity between 400G Ethernet switches deployed in large-scale AI environments.


    Supporting 400GBASE-SR4 transmission over OM4 multimode fiber, this OSFP optical transceiver helps reduce network bottlenecks while delivering reliable east-west traffic performance for GPU-intensive workloads.

    400g osfp sr4 optical transceiver connecting two 400G AI Ethernet switches over OM4 MPO fiber up to 100m
    400gbase-sr4 osfp optical transceiver connecting AI Ethernet switch to GPU server with ConnectX-7 NIC

    GPU Cluster Interconnect

    The 400G OSFP SR4 module supports direct connectivity between AI switches, high-speed NICs, and GPU servers.
    Its low-latency architecture is designed to accelerate distributed AI training and high-performance computing applications while maintaining consistent bandwidth across large GPU clusters.

     
    Quality Assurance
    1. Platform Validation
    Verified on major switch platforms including Arista, Cisco, NVIDIA, Huawei, H3C, and Juniper for reliable 400GBASE-SR4 interoperability.

    2. Performance Testing
    72-hour burn-in testing, temperature cycling (0°C–70°C), optical power verification, and BER validation (BER < 1E-12).

    3. PAM4 Signal Integrity Testing
    All 4 transmit and 4 receive lanes are individually validated to ensure stable 400GBASE-SR4 signal transmission over multimode fiber.

    4. Interoperability Testing
    Validated with OSFP switch platforms, AI networking environments, and hyperscale data center infrastructures.

    Certifications: CE, FCC, RoHS compliant.
    Warranty: 3-year warranty against manufacturing defects with lifetime technical support.
     
    400g osfp sr4 and 400gbase-sr4 optical transceiver performance testing equipmentTest Equipment
    400gbase-sr4 osfp optical transceiver compatibility validation on Arista 400G Ethernet switch platformPlatform Validation
    400g osfp sr4 environmental reliability and high temperature testing for osfp optical transceiverEnvironmental Reliability Test
     
    Compatibility & Platform Validation
    The 400G OSFP SR4 optical transceiver is validated for deployment across AI networking, hyperscale cloud infrastructure, and high-density Ethernet switching environments.
    This OSFP optical transceiver provides reliable interoperability with major networking platforms while supporting 400GBASE-SR4 applications in modern data centers.
    Validated Platforms:
    • Arista 7060X5 / 7800 series
    • Cisco Nexus 9000 series
    • NVIDIA Spectrum series
    • Huawei CloudEngine series
    • H3C S12500X series
    • Juniper QFX series
    • Dell PowerSwitch series

               400gbase-sr4 osfp optical transceiver compatible with Cisco Arista NVIDIA Huawei H3C Juniper Dell and HPE platforms

    Note: Installing a compatible transceiver does not void your network equipment warranty per major manufacturers' guidelines.

    FAQ Section

    Q1: What is a 400G OSFP SR4 optical transceiver?

    The 400G OSFP SR4 optical transceiver is a high-speed multimode optical module designed for AI networking, hyperscale data centers, and high-density Ethernet switching environments. It supports 400GBASE-SR4 transmission using PAM4 modulation and MPO connectivity.


    Q2: What fiber type is required for a 400GBASE-SR4 OSFP optical transceiver?

    The 400GBASE-SR4 OSFP optical transceiver uses multimode fiber (MMF). It typically supports up to 100 meters over OM4 fiber and up to 150 meters over OM5 fiber, making it suitable for short-reach high-bandwidth data center links.


    Q3: What is the difference between OSFP SR4 and QSFP-DD SR8?

    Both modules support 400G Ethernet connectivity, but OSFP provides improved thermal performance and higher power handling capabilities. OSFP SR4 is commonly deployed in AI networking and hyperscale infrastructure, while QSFP-DD SR8 is widely used in traditional high-density data center environments.


    Q4: Is the 400G OSFP SR4 suitable for AI networking?

    Yes. The 400G OSFP SR4 optical transceiver is optimized for AI networking, GPU cluster interconnects, and high-performance computing environments that require low-latency, high-bandwidth Ethernet connectivity.


    Q5: Which platforms are compatible with the OSFP-400G-SR4 module?

    The OSFP-400G-SR4 optical transceiver is commonly compatible with NVIDIA Spectrum platforms, Cisco, Arista, Huawei, H3C, Juniper, and other leading Ethernet switch systems, depending on the required coding profile.


    Q6: What applications are ideal for a 400G OSFP SR4 optical transceiver?

    Typical applications include AI fabrics, GPU clusters, hyperscale cloud infrastructure, spine-leaf data center architectures, and high-density Ethernet switching networks requiring scalable 400G connectivity.


    Q7: Why is OSFP becoming popular in AI data centers?

    OSFP modules offer better thermal performance and support higher power budgets compared to traditional form factors. This makes them well suited for next-generation AI networking platforms and large-scale GPU deployments.


    Q8: Does the 400G OSFP SR4 support Digital Optical Monitoring (DOM)?

    Yes. The 400G OSFP SR4 optical transceiver supports DOM functionality, allowing real-time monitoring of temperature, voltage, transmit power, and receive power for improved network reliability.

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