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    Home / Products / Transceivers / 400G/800G Ethernet Transceivers / 800G OSFP / 103597

    Arista Networks Compatible 800GBASE-LR8 (2x 400G LR4) Twin-port OSFP IHS/Closed Finned Top PAM4 1310nm 10km Dual Duplex LC/UPC DDM SMF Optical Transceiver Module for Ethernet and InfiniBand Applications

    Product No: 103597
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    US$ 1,299.00
    Compatible
    Transceivers type
    8 in real-time stock, 24 Jun, 2026

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    5-Year Warranty 1-Year Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
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    Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
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    1. Built-in Broadcom DSP Chip
2. Support Ethernet and InfiniBand NDR and 2x 400G breakout applications
3. Maximum link length 10km on SMF
4. Support 850Gb/s aggregate bit rate, Power consumption < 16W
5. Hot-pluggable OSFP with dual duplex LC/UPC connectors
6. EML transmitter + PIN PD receiver, Class 1 Laser
7. Two wire serial Interface with digital diagnostic monitoring (DDM)
8. Compliant with IEEE 802.3-2022 and 100G Lambda MSA:
9. Complies with EU Directive 2011/65/EU (RoHS compliant)
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    Specifications

    Arista Networks Compatible 800GBASE-LR8 (2x400G LR4) OSFP Closed Finned Top PAM4 Optical Transceiver Module (1271nm, 1291nm, 1311nm, and 1331nm, 10km, 2x Duplex LC/UPC Connectors, SMF, 0℃ to +70℃, DDM)

     

    Arista Networks Compatible 800GBASE-LR8 (2x 400GBASE-LR4) OSFP 800G transceiver module supports a max data rate of 850Gbps. It enables the fiber link of 10km over single-mode fiber (SMF) with dual LC duplex connectors. The 800 Gigabit Ethernet signal is carried over 4 wavelengths at 1271nm, 1291nm, 1311nm, and 1331nm. QSFPTEK manufactured  2x 400GBASE LR4 OSFP complies with IEEE 802.3-2022 and 100G Lambda MSA (2x400GBASE-LR4-6 optical interface, 2x400G-LR4-10 optical interface), IEEE 802.3df-2024 (2x400GAUI-4 C2M electrical interface), OSFP MSA HW Rev 5.1, CMIS Rev 5.2. DDM (digital diagnostics monitoring) function is supported on the 800G fiber optic transceiver to achieve real-time operating parameters monitoring. Adopting the Pulse-amplitude Modulation (PAM4) modulation, the LR8 OSFP achieves 800 Gigabit Ethernet through 8x 106.25 PAM4. The 800G 2xLR4 OSFP is widely used for 800 gigabit Ethernet and InfiniBand, data centers, and 800G to 2x 400G applications.

     

    Part Number QT-OSFP-800G-2LR4 Vendor Name QSFPTEK
    Form Factor Twin-port OSFP Max Data Rate 850Gbps (8x 106.25Gbps)
    Wavelength 1271nm, 1291nm, 1311nm, and 1331nm Distance 10km
    Connector Dual Duplex LC/UPC Cable Type SMF
    Transmitter Type EML Receiver Type PIN PD
    TX Power -2.7 to 5.1 dBm Receiver Sensitivity < -9 dBm
    Packaging Technology COB (Chip on Board) Packaging Receiver Overload 5.1 dBm
    Power Consumption <16W Modulation Format PAM4
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols IEEE 802.3-2022, 100G Lambda MSA, IEEE 802.3df-2024, OSFP MSA HW Rev 5.1, CMIS Rev 5.2 Warranty 5 Years
    Quality Testing Program
    Optical Transceivers Testing

    Take a look at our test program to get the reliable and high-performance optical transceivers.

    Quality Certifications

    Applications

    Scenario 1: 800G to 800G Direct Connectivity

    Scenario 1: 800G to 800G Direct Connectivity

     

     

    Scenario 2: 800G to 2x 400GE Breakout Connectivity

    Scenario 2: 800G to 2x 400GE Breakout Connectivity

     

    Product details

    Broadcom DSP Chip Reshapes 800G High-Speed ​​Interconnect

    This 800GBASE-LR8 OSFP module utilizes Broadcom's top-tier PAM-4 DSP chip combines ultra-low bit error rate with the industry's lowest power consumption. It uses advanced equalization technology to compensate for optical impairments and integrates FEC functions to ensure link reliability, providing core support for high-speed data centers and AI clusters.

     

    Broadcom DSP Chip Reshapes 800G High-Speed ​​Interconnect 

     

    Easy 800G to 2x 400G Breakout with OS2 SMFs

    The 800G OSFP 2LR4 module is designed with dual duplex LC/UPC connectors, while each connector can connect to a physically separate 400G LR4 QSFP-DD/OSFP module via an LC UPC Duplex OS2 SMF. This enables 800G to 2x 400G breakout links without the need for using breakout fiber optic cables.

     

    Easy 800G to 2x 400G Breakout with OS2 SMFs

     

     

    Finned-top Design to Ensure Long-term Stability

    Finned-top modules feature a heat sink on the top of transceiver or its laser. With superior thermal management, they are ideal for switches requiring efficient heat dissipation in long-term stable operation, such as Quantum-2 InfiniBand switch and the Spectrum-4 Ethernet switch. 

     

    Flat-top optics are used for adapters and Data Processing Units (DPUs), including the ConnectX-7 InfiniBand adapter and BlueField-3 DPU. Flat-top design can maximum optical coupling and transmission efficiency.

    Finned-top Design to Ensure Long-term Stability

     

     

    8x 100Gbps PAM4 Modulation Technology

    Utilize 8x electrial lanes and 8x optical lanes modulated at 100G PAM-4 per lane. On the output side, it convert 8x 106.25Gb/s electrical signal to 8x 106.25Gb/s optical signals. On the receiver side, it convert 8x 100Gb/s optical signal to 8x 100Gb/s electrical signals.

     

    8x 100Gbps PAM4 Modulation Technology

    Questions & Answers

    • ALL (11)
    • 400G OSFP (1)
    • QT-QSFP-DD-800G-DR8 (1)
    • QT-OSFP-800G-2FR4 (2)
    • QT-OSFP-800G-2DR4 (1)
    • QT-QSFP-DD-800G-2FR4 (3)

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    Resources

    • PDF Document
      QT-OSFP-800G-2LR4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guide.pdf
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    Arista Networks Compatible 800GBASE-LR8 (2x 400G LR4) Twin-port OSFP IHS/Closed Finned Top PAM4 1310nm 10km Dual Duplex LC/UPC DDM SMF Optical Transceiver Module for Ethernet and InfiniBand Applications

    Compatible Arista

    Transceivers type AR-OSFP-800G-2LR4 | 10km | Dual Duplex LC/UPC

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    Mark

    2023-12-15
    This product works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent value fo ct works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent valur money!

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    Arista Networks Compatible 800GBASE-LR8 (2x 400G LR4) Twin-port OSFP IHS/Closed Finned Top PAM4 1310nm 10km Dual Duplex LC/UPC DDM SMF Optical Transceiver Module for Ethernet and InfiniBand Applications
    US$ 1,299.00
    Compatible
    Arista
    Transceivers type
    AR-OSFP-800G-2LR4 | 10km | Dual Duplex LC/UPC
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    Bulk Order Quotes
    Arista Networks Compatible 800GBASE-LR8 (2x 400G LR4) Twin-port OSFP IHS/Closed Finned Top PAM4 1310nm 10km Dual Duplex LC/UPC DDM SMF Optical Transceiver Module for Ethernet and InfiniBand Applications

    Compatible Arista

    Transceivers type AR-OSFP-800G-2LR4 | 10km | Dual Duplex LC/UPC

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