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    Home / Products / Transceivers / 400G/800G Ethernet Transceivers / 800G QSFP-DD / 103606

    Arista Networks QDD-800G-2VSR4 Compatible 800GBASE-SR8 (2x 400G SR4) Twin-port QSFP-DD PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module

    Product No: 103606
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    US$ 799.00
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    Transceivers type
    4 in real-time stock, 03 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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    1. Built-in Broadcom DSP Chip
2. Support 2x 400G Breakout applications, no breakout cables required
3. VCSEL transmitter + PIN PD receiver, Class 1 Laser
4. Support 850Gb/s aggregate bit rate, Power consumption < 16W
5. Hot-pluggable QSFP-DD with Dual MPO-12/APC connector
6. Two wire serial Interface with digital diagnostic monitoring (DDM)
7. Compliant with QSFP-DD MSA Hardware Rev 7.0, CMIS Rev 5.0
8. Complies with EU Directive 2011/65/EU (RoHS compliant)
9. Compliant with IEEE 802.3df-2024:- 8x100GBASE-VR1/4x200GBASE-VR2/2x400GBASE?VR/1x800GBASE-VR8 optical interface
10. Compliant with IEEE 802.3df-2024:- 8x100GAUI-1/4x200GAUI-2/2x400GAUI-4/1x800GAUI-88 C2M electrical interface
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    Specifications

    Arista Networks QDD-800G-2VSR4 800GBASE-SR8 (2x400G SR4) QSFP-DD PAM4 Optical Transceiver Module (850nm, 50m, 2x MPO-12/APC Connectors, MMF, 0℃ to +70℃, DDM)

     

    Arista Networks QDD-800G-2VSR4 2x 400G SR4 QSFP-DD 800G transceiver module supports a max data rate of 850Gbps. It enables the fiber link of 50m over multimode fiber (MMF) with dual MPO-12/APC connectors. QSFPTEK manufactured  800GBASE-SR8 QSFP-DD complies with QSFP-DD MSA Hardware Rev 7.0, CMIS Rev 5.0, EU Directive 2011/65/EU (RoHS compliant), IEEE 802.3df-2024:- 8x100GBASE-VR1/4x200GBASE-VR2/2x400GBASEVR/1x800GBASE-VR8 optical interface and IEEE 802.3df-2024:- 8x100GAUI-1/4x200GAUI-2/2x400GAUI-4/1x800GAUI-88 C2M electrical interface.

    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 FR4 QSFP-DD achieves 800 Gigabit Ethernet through 8x 106.25 PAM4. The 800G 2SR4 QSFP-DD is widely used for gigabit Ethernet, data centers, and 800G to 2x 400G breakout applications.

     

    Part Number QT-QSFP-DD-800G-2VR4 Vendor Name QSFPTEK
    Form Factor Twin-port QSFP-DD Max Data Rate 850Gbps (8x 106.25Gbps)
    Wavelength 850nm Distance 50m
    Connector Dual MTP/MPO-12/APC Cable Type MMF
    Transmitter Type VCSEL Receiver Type PIN PD
    TX Power -4.6 to 4 dBm Receiver Sensitivity < -6.3 dBm
    Packaging Technology COB (Chip on Board) Packaging Receiver Overload 4 dBm
    Power Consumption < 16W Modulation Format PAM4
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols IEEE 802.3df-2024, QSFP-DD MSA Hardware 7.0, CMIS Rev 5.0 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-SR8 QSFP-DD 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 MMFs

    The 800G QSFP-DD 2SR4 module is designed with dual MPO-12/APC connectors, while each connector can connect to a physically separate 400G SR4 OSFP/QSFP-DD/QSFP112 module via an MTP/MPO-12 APC OM4 MMF. 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

     

     

    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

     

     

    800G QSFP-DD Optical Transceivers Contrast Table

     

    Part Number

    QT-QSFP-DD-800G-SR8

    QT-QSFP-DD-800G-2VR4

    QT-QSFP-DD-800G-DR8

    QT-QSFP-DD-800G-2DR4

    Image

    Data Rate

    800G

    800G

    800G

    800G

    Optical Connector

    Single MPO-16/APC

    Dual MPO-12/APC

    Single MPO-16/APC

    Dual MPO-12/APC

    Cable Type

    MMF

    MMF

    SMF

    SMF

    Wavelength

    850nm

    850nm

    1310nm

    1310nm

    Reach

    50m

    50m

    500m

    500m

    Modulation

    PAM4

    PAM4

    PAM4

    PAM4

    Max Power Consumption

    < 16W

    < 16W

    < 16.5W

    < 18W

    Application

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout, 800G to 8x100G breakout

    800G to 800G, 800G to 2x400G breakout

    Matching Downlink  Transceivers

    QT-QSFP-DD-SR4 (400G)

    QT-Q112-400G-SR4

    QT-OSFP-400G-SR4

    QT-QSFP-DD-SR4 (400G)

    QT-Q112-400G-SR4

    QT-OSFP-400G-SR4

    QT-QSFP-DD-DR4 (400G)

    QT-Q112-400G-DR4

    QT-OSFP-400G-DR4

    QT-QSFP28-DR1

    QT-QSFP-DD-DR4 (400G)

    QT-Q112-400G-DR4

    QT-OSFP-400G-DR4

    Part Number

    QT-QSFP-DD-800G-2XDR4

    QT-QSFP-DD-800G-2FR4

    QT-QSFP-DD-800G-2LR4

    		  

    Image

    		 

    Data Rate

    800G

    800G

    800G

    		  

    Optical Connector

    Dual MPO-12/APC

    Dual Duplex CS/UPC

    Dual Duplex LC/UPC

    		  

    Cable Type

    SMF

    SMF

    SMF

    		  

    Wavelength

    1310nm

    1271nm, 1291nm, 1311nm and 1331nm

    1271nm, 1291nm, 1311nm and 1331nm

    		  

    Reach

    2km

    2km

    10km

    		  

    Modulation

    PAM4

    PAM4

    PAM4

    		  

    Max Power Consumption

    < 18W

    < 18W

    ≤ 18W

    		  

    Matching Transceivers

    QT-QSFP-DD-DR4+ (400G)

    QT-Q112-400G-DR4+

    QT-QSFP28-FR1

    QT-QSFP-DD-FR4 (400G)

    QT-Q112-400G-FR4

    QT-OSFP-400G-FR4

    QT-QSFP-DD-LR4 (400G)
    QT-OSFP-400G-LR4

    		  

    Application

    800G to 800G, 800G to 2x400G breakout, 800G to 8x100G breakout

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout

    		  

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    • PDF Document
      Transceiver Module User Guid.pdf
    • PDF Document
      QT-QSFP-DD-800G-2VR4 Datasheet.pdf
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    Arista Networks QDD-800G-2VSR4 Compatible 800GBASE-SR8 (2x 400G SR4) Twin-port QSFP-DD PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module

    Compatible Arista

    Transceivers type QDD-800G-2VSR4 | 50m | Dual MPO-12/APC

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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 QDD-800G-2VSR4 Compatible 800GBASE-SR8 (2x 400G SR4) Twin-port QSFP-DD PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module
    US$ 799.00
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    Arista
    Transceivers type
    QDD-800G-2VSR4 | 50m | Dual MPO-12/APC
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    Arista Networks QDD-800G-2VSR4 Compatible 800GBASE-SR8 (2x 400G SR4) Twin-port QSFP-DD PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module

    Compatible Arista

    Transceivers type QDD-800G-2VSR4 | 50m | Dual MPO-12/APC

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