QSFP28 to 4x SFP28 Active Breakout DAC Cable

Volex’s QSFP28 to 4x SFP28 active breakout Direct Attach Cables feature 4 transmitting and 4 receiving 25Gbps NRZ channels and support 4x 25Gbps (4x SFP28) breakout configurations. The cable assemblies meet 25G Ethernet standard. These active breakout DAC’s enhance Signal Integrity, which is severely stressed under high-speed data transmission, through advanced linear equalization. The result is longer reach up to 9M vs 5M for the passive version and smallest cable size and highest flexibility. Also, IEEE CA-25G-N spec can be met for full in-rack cabling length to support no FEC for low latency application.

Volex’s QSFP28 active breakout DACs are a cost-effective alternative to the high-power consumption Active Optical Cable with superior reliability for next-gen data centres that deploy faster speed in a tighter space.

QSFP28 to 4x QSFP28 Active Breakout DAC Cable Image

QSFP28 to 4x SFP28 Active Breakout 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

QSFP28 to 4x SFP28 Active Breakout DAC Cable Features and Specifications

Product Type 100Gbps (QSFP28) to 4x 25Gbps (SFP28) active breakout copper Direct Attach Cable
Conductor Treatment Laser stripped conductors
Cable Type High speed twinax cable, 4-pair differential, 100 +/-5 ohms
Cable Colour Black
Cable Jacket PVC
Packaging PE bag
Power Supply Voltage 3.3 V
Power Consumption <150mW per active channel
Temperature Range 0 – 70o C
Retention Force Meet MSA Specification
Insertion Force Meet 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.

QSFP28 to 4x SFP28 Active Breakout DAC Cable Applications

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

Standards Compliance of QSFP28 to 4x SFP28 Active Breakout DAC Cable

  • IEEE 802.3by
  • SFF-8402, SFF-8432, SFF-8665, SFF-8661, SFF-8472, SFF-8636, SFF-8679
  • EIA-364
  • UL 94, 1581, VW1, File No. E510564
  • RoHS

QSFP28 to 4x SFP28 Active Breakout DAC Cable Mechanical Drawings

QSFP28 to 4x SFP28 Active Breakout DAC Cable Product Dimensions

Volex P/N Cable Length
Cable Gauge
Cable OD
D440PSG40BA 4.00 30 4.5
D440PSG50BA 5.00 30 4.5
D448PSG50BA 5.00 28 5.5
D448PSG60BA 6.00 28 5.5
D448PSG70BA 7.00 28 5.5
D446PSG70BA 7.00 26 6.0
D446PSG80BA 8.00 26 6.0
D446PSG90BA 9.00 26 6.0

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 QSFP28 to 4x SFP28 Active Breakout DAC Cable

Contact Volex for further assistance with external QSFP28 to 4x SFP28 active breakout direct attach copper cable.