QSFP-DD Active DAC Cable

Volex’s QSFP-DD (Double Density) active Direct Attach Copper cable features 8 transmitting and 8 receiving 50Gbps PAM-4 channels. The cable assembly meets QSFP-DD MSA and IEEE 802.3cd specifications. The signal integrity, severely stressed under high-speed data transmission, is enhanced via advanced linear equalisation. The result is longer reach up to 9M vs 3M for the passive version with the same unique dielectric material and cable construction that offers the smallest cable size and highest flexibility.

As next-gen data centres deploy faster speed in a tighter space, they need high performance cables that reduce power consumption, provide reliable operation and are low cost. Volex’s QSFP-DD active Direct Attach Copper cable is designed to meet the next-gen data centre needs and is a cost-effective alternative to the high-power consumption Active Optical Cable.

QSFP-DD Active DAC Cable Product Highlights

  • Low power consumption and heat dissipation
  • Complete cable assembly uniquely terminated at the factory to provide the most reliable operation
  • 100% tested for signal integrity with serial number traceability

QSFP-DD Active DAC Cable Features and Specifications

Product Type QSFP-DD to QSFP-DD active direct attach copper cable
Conductor Treatment Laser stripped conductors
Cable Type High-speed twinax cable, 16-pair differential, 100 +/-5 ohms
Cable Colour Black
Cable Jacket PVC
Packaging PE bag
Power Supply Voltage 3.3V
Power Consumption <150mW per active channel
Temperature Range 0 – 70o C
Retention Force Minimum 90N per MSA specification
Insertion Force Maximum 90N per MSA specification
EEPROM Each connector module contains an EEPROM to provide product information to the host system
Cable Termination 100% factory tested including comprehensive signal integrity verification and serial number traceability using advanced Manufacturing Execution Systems
Volex reserves the right to change specifications and availability without prior notice.

QSFP-DD Active DAC Cable Applications

  • Switches, Servers, Routers, Storage Arrays
  • Networking Equipment
  • Data Centres
  • Storage Area Networks
  • Telecom Central Offices (CO)
  • Test and Measurement Equipment

Standards Compliance of QSFP-DD Active DAC Cable

  • IEEE P802.3cd
  • QSFP-DD/QSFP-DD800/QSFP112 HW Rev 6.01
  • CMIS 5.1
  • EIA-364
  • UL 94, 1581, VW1, File No. E510564
  • RoHS

QSFP-DD Active DAC Cable Mechanical Drawings

QSFP-DD Active DAC Cable Product Dimensions

Volex P/N

Cable Length
Cable Gauge

Cable OD


4.00 30 9.0
DQ50BDG40BA 5.00 30



5.00 28 10.4
DQ58BDG60BA 6.00 28



7.00 28 10.4
DQ56BDG70BA 7.00 26



8.00 26 11.6
DQ56BDG90BA 9.00 26


4-9m lengths available with 26-30 AWG conductor sizes to achieve maximum performance. Options Available:

  • Low Smoke, Zero Halogen (LSZH) jackets
  • Custom colours for pull tab
  • Custom EEPROM mapping

Contact Volex for QSFP-DD Active DAC Cable

Contact Volex for further assistance with external QSFP-DD active direct attach copper cable.