200G QSFP-DD Passive DAC Twinax Copper Cable (0.5-3m): 200G-PDAC-QSFP-DD

Our EDGEOPTIC 200G-PDAC-QSFP-DD is a multi-vendor compatible 200G QSFP-DD passive direct attach copper cable designed for ultra-high-performance 200 Gigabit Ethernet applications within modern data center and high-performance computing environments. The 200G-PDAC-QSFP-DD cable features point-to-point configuration with QSFP-DD connectors on both ends, delivering reliable high-bandwidth connectivity for short-reach interconnects between spine and leaf switches, high-performance servers, and storage systems.

The cable supports aggregate data rates from 200 to 224 Gbps based on its eight-lane electrical interface operating at 25 to 28 Gbps NRZ per lane. The QSFP-DD (Quad Small Form-Factor Pluggable Double Density) form factor doubles the lane count of standard QSFP interconnects while maintaining a similar external footprint, accommodating the demanding bandwidth requirements of contemporary data center architectures. For Ethernet deployments, the cable handles 200G Ethernet at full line rate, supporting the latest generation of network infrastructure. The QSFP-DD port architecture also preserves backward compatibility with existing QSFP+ and QSFP28 modules, allowing operators to mix 40G, 100G, and 200G equipment in the same switch chassis for phased upgrades to 200G infrastructure without complete platform replacement.

As a passive DAC solution, the 200G-PDAC-QSFP-DD requires no external power and introduces zero latency to signal transmission, making it the preferred choice for latency-sensitive applications such as financial trading platforms, real-time analytics, and tightly coupled HPC workloads. The cable construction utilizes high-quality twinax copper with optimized wire gauges for each length range: AWG30 for 0.5 to 2.5 meters and AWG28 for 3 meters. This progressive wire gauge selection ensures optimal signal integrity at 28 Gbps NRZ per lane while maintaining practical cable flexibility for installation in high-density 200G environments.

The electrical interface conforms to QSFP-DD MSA specifications, ensuring broad compatibility with standard QSFP-DD host systems from multiple equipment vendors. Our 200G QSFP-DD DAC cables can be encoded for compatibility with over 80 different equipment brands including major networking, server, and storage vendors. The cable is hot pluggable and incorporates DDM/DOM (Digital Diagnostic Monitoring) functionality, providing real-time diagnostic data including module temperature and supply voltage through the MSA-compatible interface for proactive network monitoring.

Standards compliance includes IEEE 802.3bj and IEEE 802.3cd specifications. The cable is engineered with low crosstalk and optimized return loss characteristics for excellent signal integrity across all eight differential pairs. The cable operates within a 0 to 70°C temperature range, suitable for controlled data center environments. With an MTBF rating of 1,000,000 hours, the cable delivers long-term reliability for mission-critical 200G infrastructure deployments.

Typical deployment scenarios include 200G spine-leaf switch interconnects, server-to-ToR connectivity in hyperscale environments, top-of-rack aggregation in AI/ML training fabrics, and HPC cluster backbones. The passive design eliminates power consumption and reduces overall system power budget compared to active alternatives, which is particularly valuable in densely packed 200G server racks where thermal headroom is constrained.

Our 200G QSFP-DD passive DAC is CE/RoHS certified and compliant with product safety standards. Because our focus is providing top quality service, we perform comprehensive quality checks before delivery including electrical parameter measurements, connector inspection tests, and QSFP-DD EEPROM memory data validation tests.