QSFP-DD to 2x QSFP56 Passive Breakout DAC Cable

Volex’s QSFP-DD (Double Density) to 2x QSFP56 passive breakout Direct Attach Cable features 8 50Gbps channels with PAM-4 modulation for each of the transmitting and receiving directions. The breakout cable is offered in a 400Gbps (QSFP-DD) to 2x 200Gbps (2x QSFP56) configuration. The cable assembly meets IEEE 802.3cd 50GBase-CR and 100GBase-CR2 standard with substantial signal integrity margin providing high performance and bandwidth interconnect solutions for high-density applications.

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. This breakout cable assembly is designed to meet the next-gen data centre needs offering the smallest cable outer diameter and bend radius and highest flexibility while meeting or exceeding the MSA signal integrity specification.

QSFP-DD to 2x QSFP56 Passive Breakout DAC Cable Product Highlights

  • Near zero power consumption and no heat generated
  • 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 to 2x QSFP56 Passive Breakout DAC Cable Features and Specifications

Product Type 400Gbps (QSFP-DD) to 2x 200G (2x QSFP56) passive breakout direct attach copper cable
Conductor Treatment Laser stripped conductors
Cable Type High-speed twinax cable, 2x 8-pair differential, 100 +/-5 ohms
Cable Colour Black
Cable Jacket PVC
Packaging PE bag
Power Supply Voltage 3.3V
Temperature Range 0 – 70o C
Retention Force Minimum 125N per MSA specification (all ends)
Insertion Force Maximum 90N per QSFP-DD MSA specification (QSFP-DD end)

Maximum 60N per SFF-8661 (QSFP56 end)
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 to 2x QSFP56 Passive Breakout DAC Cable Applications

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

Standards Compliance of QSFP-DD to 2x QSFP56 Passive Breakout DAC Cable

  • IEEE 802.3cd
  • QSFP-DD/QSFP-DD800/QSFP112 HW Rev 6.01
  • CMIS 5.1
  • SFF-8665, SFF-8661, SFF-8636, SFF-8679
  • EIA-364
  • UL 94, 1581, VW1, File No. E510564
  • RoHS

QSFP-DD to 2x QSFP56 Passive Breakout DAC Cable Mechanical Drawings

QSFP-DD to 2x QSFP56 Passive Breakout DAC Cable Drawing

QSFP-DD to 2x QSFP56 Passive Breakout DAC Cable Product Dimensions

Volex P/N

Cable Length
(m)		 Cable Gauge
(AWG)		 Cable OD
(mm)

DT50PDG05BS

 0.50 30 6.8
DT50PDG10BS 1.00 30

6.8

DT50PDG15BS

 1.50 30 6.8
DT58PDG20BS 2.00 28

7.9

DT58PDG25BS

 2.50 28 7.9
DT56PDG30BS 3.00 26

8.5

0.5-3m 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 to 2x QSFP56 Passive Breakout DAC Cable

Contact Volex for further assistance with external QSFP-DD to 2x QSFP56 passive breakout direct attach copper cable.