50G SFP56 Passive DAC Twinax Copper Cable (0.5-3m): 50G-PDAC-SFP56

Our EDGEOPTIC 50G-PDAC-SFP56 is a multi-vendor compatible 50G SFP56 passive direct attach copper cable designed for ultra-high-performance 50 Gigabit Ethernet applications within modern data center and telecommunications environments. The 50G-PDAC-SFP56 cable features point-to-point configuration with SFP56 connectors on both ends, delivering cutting-edge single-lane 50G connectivity for server-to-switch interconnects, storage connections, and emerging 5G fronthaul and backhaul infrastructure where 50G per lane has become the next evolution in network speeds.

The cable supports multi-rate operation from 10.31 to 53.125 Gbps, accommodating current and legacy network protocols within a single compact form factor. For Ethernet deployments, the cable handles 10G Ethernet at 10.31 Gbps, 25G Ethernet at 25.78 Gbps, and 50G Ethernet at 53.125 Gbps, providing exceptional backward compatibility for mixed-speed network environments during infrastructure transitions. The SFP56 form factor utilizes PAM4 (4-level Pulse Amplitude Modulation) signaling technology to achieve 50 Gbps throughput over a single lane, doubling the bandwidth of traditional SFP28 while maintaining the same familiar form factor footprint.

As a passive DAC solution, the 50G-PDAC-SFP56 requires no external power and introduces zero latency to signal transmission, making it ideal for latency-sensitive applications such as financial trading platforms, real-time analytics, and distributed computing workloads. The cable construction utilizes high-quality AWG30 twinax copper across all lengths from 0.5 to 3 meters, optimized for the demanding signal integrity requirements of PAM4 signaling while maintaining practical cable flexibility for installation in high-density environments.

A distinguishing feature of the 50G-PDAC-SFP56 is its extended operating temperature range from -20°C to 85°C, making it suitable for deployment in challenging environments beyond traditional climate-controlled data centers. This extended temperature capability is particularly valuable for telecommunications applications, outdoor cabinets, industrial settings, and edge computing deployments where environmental conditions may vary significantly.

The electrical interface conforms to SFP56 MSA, SFF-8402, IEEE 802.3bj, and IEEE 802.3cd specifications, ensuring broad compatibility with standard SFP56 host systems from multiple equipment vendors. Our 50G SFP56 DAC cables can be encoded for compatibility with major networking, server, and telecommunications equipment brands. The cable 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.

The cable achieves an MTBF rating of 1,000,000 hours, delivering long-term reliability for mission-critical infrastructure deployments. Typical deployment scenarios include next-generation server NIC connectivity, 5G transport networks, edge computing infrastructure, and high-density switch interconnects where 50G per port maximizes bandwidth efficiency.

Our 50G SFP56 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 SFP56 EEPROM memory data validation tests.