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 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 direct attach copper 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 | 3.3V |
| Power Consumption | <150mW per active channel |
| Temperature Range | 0 – 70o C |
| Retention Force | Meets MSA Specifications |
| Insertion Force | Meets MSA Specifications |
| 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-8431, 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 (m) |
Cable Gauge (AWG) |
Cable OD (mm) |
| 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.
