Description

Direct Attach Cable ( DAC )

Technical Description for Direct Attach Cable

• Twinax Construction: Made of two conductive copper wires twisted together within a single housing, offering superior shielding against electromagnetic interference (EMI).
• Integrated Connectors: Transceiver housings are factory-installed and cannot be removed, meaning cables come in fixed lengths, typically ranging from 0.5m to 10m.
• Passive vs. Active:
  • Passive DAC: Contains no electronic components for signal conditioning; it is cost-effective but limited to short ranges (typically up to 7 meters).
  • Active DAC: Includes signal amplification and equalization circuitry to support longer distances (up to 15 meters).
• Power & Latency: DACs offer the lowest power consumption (almost zero for passive variants) and the lowest latency of all interconnect solutions because they avoid the electrical-to-optical conversion required by fiber optics. 

Key Applications for Direct Attach Cable

• Top-of-Rack (ToR) Interconnects: Connecting servers to switches within the same rack or adjacent racks.
• Storage Area Networks (SAN): Linking storage arrays to servers or switches.
• High-Performance Computing (HPC): Facilitating rapid data exchange between compute nodes with minimal delay.
• Network Breakouts: Using breakout DACs to split one high-speed port (e.g., 100G) into four lower-speed ports (e.g., 4x25G) to optimize port density. 

Features of Direct Attach Cable

• 10G/25G/40G/50G/56G/100G/200G/400G/800G/1.6T, etc
• DAC, Breakout/Splitter DAC
• EMI, ESD Compliant
• Working Temperatures 0°C ~ 70°C
• Voltage 3.3V
• RoHS Compliant

List of Product of Direct Attach Cable (DAC)

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