800G DAC QSFP-DD/OSFP112 Cable丨C-LIGHT

800G DAC

C-LIGHT independently developed 800G DAC high-speed cable, its communication protocol complies with IEEE 802.3ck/cd/bj/by; interface protocol complies with SFF-8665; packaging protocol complies with QSFP-DD/OSFP MSA. The product transmission distance is between 1.5m-3m, and 800G DAC high-speed cable is mainly used in short-distance wiring solutions in data centers. 800G DAC high-speed cable is compatible with more than 100 brands of switches. With 15 years of experience in the optical communication industry, C-LIGHT is able to provide spot supply and customization services, and also promises to provide original after-sales service to help customers reduce operating costs.

3-year warranty

Long term maintenance

Technical Support

Professional free technical guidance

100% detection

Each module is 100% tested

Spot stock

Always in stock, short delivery time

Technical Support

Tel：+86 158 1857 3751

Online Consultation

Product Details

Support & Service

Quality Inspection

Quality Certification

Product Details

800G DAC is a direct high-speed cable used within data centers that supports a data transmission rate of 800 gigabits per second. It is mainly used to connect servers, switches, GPU computing systems and other devices inside the cabinet, and is a key physical layer component for building an 800G network.

Form Factor	Part No.	Fiber Type	Data Rate	Wavelength	Distance	Connector	Case Temperature
800G QSFP-DD-800G QSFP-DD Flat to Flat	CLQD8-QD8CU-0.5~2-FLT	Copper	800G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 800G OSFP112 Finned toFinned	CLOP8-OP8CU-0.5~ 2-FIN	Copper	800G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 800G OSFP112 Flat to Flat	CLOP8-OP8CU-0.5~ 2-FLT	Copper	800G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 800G QSFP-DD Finned to Flat	CLOP8-QD8CU-0.5~ 2-FTF	Copper	800G	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 2X400G OSFP112 Finned to Finned	CLOP8-2xOP4CU-0.5~ 2-FIN	Copper	800G/400G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 2X400G OSFP112 Flat to Flat	CLOP8-2xOP4CU-0.5~ 2-FLT	Copper	800G/400G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 2X400G OSFP112 Finned to Flat	CLOP8-2xOP4CU-0.5~ 2-FTF	Copper	800G/400G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 2xQSFP112 Finned to Flat	CLOP8-2xQ1124CU-0.5~ 3-FTF	Copper	800G/400G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 4xOSFP112 Finned or Flat	CLOP8-4xOP2CU-0.5~ 3-FTF	Copper	800G/200G IB	Cable	0.5M~2M	28AWG	Com./Ind.
800G OSFP112- 4xOSFP112 Flat or Flat	CLOP8-4xOP2CU-0.5~ 3-FLT	Copper	800G/200G IB	Cable	0.5M~2M	28AWG	Com./Ind.

Basic Composition and Types

Consisting of copper cables paired with high-speed connectors (e.g., QSFP‑DD, OSFP) fixed at both ends, they are categorized into Direct Attach Copper cables (DAC), Active Copper Cables (ACC), and Active Electrical Cables (AEC).

Key Technical Parameters

- Speed: 800 Gbps (8 lanes *100 Gbps PAM4 modulation).

- Main Reach: DAC typically 1–3 m; AEC can reach 3–5 m or longer.

- Power Consumption: Extremely low (near 0 W for passive DAC, about 1–2 W/port for active cables), far lower than optical modules.

- Latency: Sub‑nanosecond, extremely low.

Core Application Scenarios

- Short‑reach intra-rack connections in data centers: e.g., Top‑of‑Rack (ToR) switch to server, or switch‑to‑switch cluster interconnects.

- AI/High‑Performance Computing clusters: Leading vendors prioritize DAC whenever possible to maximize energy efficiency and minimize latency.

Core Advantages

- Ultra‑low Cost: Port cost can be >40 % lower than equivalent 800 G optical modules.

- Ultra‑low Power and Latency: Significantly reduces data‑center operational expenses and cooling overhead.

- Plug‑and‑play, High Reliability: Passive design requires no configuration and exhibits low failure rates.

800 G DAC serves as a foundational technology for short‑reach, low‑cost, high‑efficiency connections inside data centers, with its importance becoming increasingly prominent in the era of AI computing.

Support&Service

Customized Needs

- 01 -

Customized Needs

C-LIGHT R&D and sales provide various personalized product customization services for customers in different industries.

C-LIGHT ensures good product quality and quality assurance through a series of effective measures.

C-LIGHT provides professional pre-sales and after-sales services, including product certification qualifications, product reports, and free technical support.

C-LIGHT provides an excellent production environment to ensure that products can meet customer needs.

- 04 -

Quality inspection

●100% of products pass initial test, final test and factory inspection.

●3-step quality control management process.

●100% complete implementation of customer order quality requirements.

●100% guarantee of customer product data information security.

Quality certification

Please contact us to download the certification certificate.

Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.

Any question?
We are here ready for you.

Get expert advice quickly,Meet your requirements in all aspects
Phone：+86 158 1857 3751
Email : sales@c-light.com

: Call