800G QSFP112-DD DAC

Product Overview

The 800G QSFP112-DD DAC is a direct-attach copper cable assembly designed for high-speed network interconnects. It strictly complies with the QSFP-DD800 MSA and IEEE802.3ck protocol standards, delivering stable 800Gbps high-speed data transmission. The product supports multiple wire gauge options from 26 to 30 AWG, with a maximum transmission distance of up to 2 meters. It features hot-swappable capability, low power consumption, EMI immunity, and other core characteristics. Its standard operating temperature range covers 0°C to 70°C, and it can also be customized to meet industrial-grade operational requirements. It is widely used in 800G Ethernet, switches, servers, routers, supercomputing centers, cluster networks, and other high-speed networking scenarios, providing a reliable interconnection solution for high-density data transmission.

Technical Principles and Protocol Standards

QSFP-DD (Quad Small Form-factor Pluggable Double Density) is a next-generation high-speed interconnect standard that achieves high-speed data transmission through eight electrical interfaces. It supports 28 Gbps NRZ or 56 Gbps PAM-4 modulation, enabling aggregated bandwidths of 200G, 400G, or 800Gbps per port, doubling port density compared to traditional QSFP solutions. The 800G QSFP112-DD DAC is designed based on this standard and strictly adheres to the IEEE802.3ck protocol specifications, ensuring perfect compatibility with compliant network equipment. The product employs a proprietary heatsink design that effectively handles power demands of 15–18W, maintaining excellent thermal performance while safeguarding signal integrity, thus providing stable support for high-speed data transmission. Additionally, the QSFP-DD architecture offers strong backward compatibility—existing QSFP modules can be directly inserted into QSFP-DD ports, maximizing protection of users’ existing equipment investments.

Core Performance Features

1. Compliance with Protocols: Strictly conforms to QSFP-DD800 MSA and IEEE802.3ck standards, ensuring compatibility and stable interconnection with mainstream 800G network devices, thereby avoiding transmission failures caused by protocol mismatches.
2. Flexible Wire Gauge Options: Offers multiple wire gauges ranging from 26 to 30 AWG, allowing users to select models tailored to space constraints and transmission distance requirements in real-world deployments, balancing transmission performance with wiring convenience.
3. Long-Distance High-Speed Transmission: Supports up to 2 meters of transmission distance, maintaining stable 800Gbps data rates within this range, meeting short-distance high-speed interconnection needs inside cabinets and between racks.
4. Hot-Swappable Capability: Features hot-swappable functionality, enabling cable insertion and removal during active device operation without shutting down network equipment, significantly enhancing maintenance convenience and operational efficiency while reducing network downtime.
5. Low-Power Energy-Saving Design: Employs a low-power circuit design that reduces energy consumption while maintaining high-speed transmission performance, lowering overall equipment power usage and aligning with energy-saving requirements in data centers and supercomputing centers.
6. EMI Immunity Protection: Incorporates EMI-resistant design, effectively shielding against electromagnetic interference and preventing external electromagnetic signals from affecting high-speed data transmission, thus ensuring data accuracy and stability.
7. Wide-Temperature Operating Range: Standard operating temperatures span 0°C to 70°C, satisfying environmental needs in most commercial network scenarios, while also supporting custom industrial-grade versions adapted to more severe high- and low-temperature conditions.

Key Advantages

1. High Density and High Bandwidth: Based on the QSFP-DD architecture, it delivers 800Gbps aggregated bandwidth per port, doubling port density compared to traditional QSFP solutions, effectively increasing network device interconnection density, saving rack space, and reducing data center deployment costs.
2. Excellent Thermal Performance and Signal Integrity: Utilizes a proprietary heatsink design that efficiently dissipates heat, accommodating power demands of 15–18W, and maintains stable signal transmission even under heavy load, preventing overheating-related speed reductions or equipment failures.
3. Strong Backward Compatibility: Allows existing QSFP modules to be plugged into QSFP-DD ports, enabling users to upgrade to an 800G network architecture without replacing current modules, substantially lowering network upgrade costs and protecting existing equipment investments.
4. Flexible Adaptability to Various Scenarios: With multiple wire gauges and transmission distances available, it can adapt to diverse cabling spaces and transmission needs, while also supporting industrial-grade customization to cover both commercial and industrial application scenarios.
5. Stable and Reliable Transmission Assurance: EMI-immune design and compliance with protocols ensure stable, error-free data transmission, minimizing packet loss and transmission delays caused by interference or protocol incompatibility, thereby enhancing overall network reliability.

Core Product Value

1. 800G high-speed transmission capability, meeting the high-volume data transfer demands of supercomputing centers, cluster networks, and similar scenarios, boosting data processing and interaction efficiency.
2. High-density interconnection design, reducing the space occupied by network equipment and lowering data center deployment and operational costs.
3. Backward compatibility protects existing investments, lowers the threshold for network upgrades, and helps users transition smoothly to an 800G network architecture.
4. Low power consumption and EMI resistance enhance network operational stability and energy efficiency, reducing long-term maintenance costs.

Target Customer Groups

Network equipment manufacturers, data center operators, supercomputing center builders, enterprise IT infrastructure service providers, telecom operators, and industrial network solution providers.

Application Scenarios

This product is suitable for various high-speed network interconnection scenarios, including:
1. 800G Ethernet Deployment: As a core interconnection component of 800G Ethernet architectures, it enables high-speed data transmission between switches, servers, and other devices, building large-bandwidth enterprise- or carrier-grade networks.
2. Switch-to-Server Interconnection: Used for short-distance, high-speed connections between switches and servers within data centers, improving internal data exchange efficiency and supporting cloud computing, big data, and other business operations.
3. Router Interconnection: Applied to high-speed links between core routers, ensuring backbone network capacity for handling large volumes of data and boosting overall network throughput.
4. Supercomputing Centers and Cluster Networks: Provides high-speed interconnections for computing and storage nodes in supercomputing centers, meeting the bandwidth demands of large-scale parallel computing and massive data processing, thereby enhancing computational efficiency.
5. Industrial Network Scenarios: Customized industrial-grade versions can be deployed in high- and low-temperature environments with strong electromagnetic interference, offering stable interconnection support for high-speed networks in industrial automation, smart manufacturing, and other applications.

Solving Industry Pain Points

1. Addressing insufficient bandwidth and low port density in traditional high-speed interconnection solutions: The 800G QSFP112-DD DAC delivers 800Gbps high-speed transmission while doubling port density based on the QSFP-DD architecture, meeting the demands of data centers, supercomputing centers, and other scenarios for high-bandwidth, high-density interconnections.
2. Tackling excessively high network upgrade costs: With backward compatibility, existing QSFP modules can continue to be used, allowing users to upgrade to 800G networks without replacing their current modules, significantly reducing upgrade expenses.
3. Mitigating poor thermal performance and signal integrity under heavy loads: A proprietary heatsink design effectively dissipates heat, ensuring stable signal transmission even under heavy load conditions, preventing equipment failures or performance degradation due to overheating.
4. Countering transmission instability caused by electromagnetic interference: EMI-immune design effectively shields against external electromagnetic signals, enhancing data transmission accuracy and reliability, reducing packet loss and latency.
5. Overcoming inadequate scenario adaptability: Offering multiple wire gauges and transmission distances, along with industrial-grade customization, it can accommodate diverse spatial and environmental requirements in different network scenarios.

Common Questions FAQ

Q1: Which protocol standards does the 800G QSFP112-DD DAC support?
A: This product strictly complies with QSFP-DD800 MSA and IEEE802.3ck standards, ensuring compatibility with mainstream 800G network devices.
Q2: What is the maximum transmission distance of this cable, and which wire gauges are supported?
A: The product supports up to 2 meters of transmission distance and offers multiple wire gauges from 26 to 30 AWG, allowing flexible adaptation to actual scene requirements.
Q3: Does the product support hot-swapping?
A: Yes, the 800G QSFP112-DD DAC features hot-swappable capability, enabling cable insertion and removal during active device operation, enhancing maintenance convenience.
Q4: What is the product’s operating temperature range, and does it support industrial-grade scenarios?
A: The standard version operates between 0°C and 70°C, while a custom industrial-grade version can be provided to meet more demanding high- and low-temperature industrial environments.
Q5: Are QSFP-DD ports compatible with existing QSFP modules?
A: Yes, the QSFP-DD architecture boasts backward compatibility, allowing existing QSFP modules to be directly inserted into QSFP-DD ports, protecting users’ existing equipment investments.