The 400G QSFP-DD to QSFP-DD Passive Direct Attach Copper (DAC) Cable is a cost-effective solution for short-range, high-speed data transmission in data centers. With QSFP-DD connectors on both ends, it connects network devices like switches and servers within or between adjacent racks. As a passive cable, it requires no external power, relying on host devices for signal conditioning, ensuring low latency and high reliability. Supporting 400 Gbps through eight 50 Gbps lanes, it complies with IEEE 802.3cd and QSFP-DD MSA standards, delivering excellent signal integrity while reducing crosstalk and electromagnetic interference (EMI). Its robust design suits demanding applications like cloud computing, artificial intelligence, and high-performance networking. The plug-and-play functionality simplifies deployment and reduces downtime. Ideal for short distances, the cable offers significant cost and energy savings by eliminating the need for active optical modules. Available in various lengths, it adapts to diverse setups while meeting strict industry performance standards. The 400G QSFP-DD Passive DAC Cable is a reliable and efficient choice for next-generation network environments.
· Compatible with IEEE 802.3bj and IEEE 802.3cd
· Supports aggregate data rates of 400Gbps(PAM4)
· Optimized construction to minimize insertion loss and cross talk
· Pull-to-release slide latch design
· 28AWG through 30AWG cable
· Straight and break out assembly configurations available
· Customized cable braid termination limits EMI radiation
· Customizable EEPROM mapping for cable signature
· RoHS compliant
High Speed Characteristics
Parameter | Symbol | Min | Typ | Max | Unit | Note |
Differential Impedance | TDR | 90 | 100 | 110 | Ώ | |
Insertion loss | SDD21 | -16.06 | -8 | dB | At 13.28 GHz | |
Differential Return Loss | SDD11 | -12.45 | See 1 | dB | At 0.05 to 4.1 GHz | |
SDD22 | -3.12 | See 2 | dB | At 4.1 to 19 GHz | ||
Common-mode to common-mode output return loss | SCC11 SCC22 | -2 | dB | At 0.2 to 19 GHz | ||
Differential to common-mode return loss | SCC11 | -12 | See 3 | dB | At 0.01 to 12.89 GHz | |
SCC22 | -10.58 | See 4 | dB | At 12.89 to 19 GHz | ||
Differential to common Mode Conversion Loss | SCD21-IL | -10 | dB | At 0.01 to 12.89 GHz | ||
See 5 | dB | At 12.89 to 15.7 GHz | ||||
-6.3 | dB | At 15.7 to 19 GHz | ||||
Channel Operating Margin | COM | -3 | dB |
Notes:
1. Reflection Coefficient given by equation SDD11(dB) < -16.5 + 2 × SQRT(f ), with f in GHz.
2. Reflection Coefficient given by equation SDD11(dB) < -10.66 + 14 × log10(f/5.5), with f in GHz.
3. Reflection Coefficient given by equation SCD11(dB) < -22 + (20/25.78)*f, with f in GHz.
4. Reflection Coefficient given by equation SCD11(dB) < -15 + (6/25.78)*f, with f in GHz.
5. Reflection Coefficient given by equation SCD21(dB) < -27 + (29/22)*f, with f in GHz.
800G Twin-port 2x400G OSFP Active Copper Cable
800G Twin-port 2x400G OSFP Passive DAC Cable
800G 4x200G OSFP Breakout Active Copper Cable
400G OSFP to 400G QSFP-DD Passive DAC Twinax Cable
400G OSFP to 4x100G QSFP56 Passive DAC Breakout Cable
400G QSFP-DD to 4x100G QSFP56 Active Optical Cable
400G QSFP-DD to 4x100G QSFP28 Active Optical Cable
400G OSFP to 2x200G QSFP56 AOC Breakout Cable
400G QSFP-DD Active Optical Cable
400G QSFP-DD to 2x 200G QSFP56 Active Optical Breakout Cable
200G QSFP56 to 2x100G QSFP56 Direct Attach Copper Cable
200G QSFP56 Passive DAC Twinax Cable
100 Gb/s QSFP28 Active Optical Cable
100G QSFP28 Passive DAC Twinax Cable
40G QSFP+ to 4x10G SFP+ Transceiver
40G QSFP+ to QSFP+ Passive Copper Cable (PCC)
40G QSFP+ Active Optical Cable
QSFP+ 4x10Gb/s Transceiver MPO Kit
12/24 MTP/MPO LC Harness Cable Assembly
10G SFP+ Active Optical Cable
100G QSFP28 to 25G SFP28 Adapter
SFPP-AT-DAC-2M 10G SFP+ Passive Direct Attach Copper Twinax Cable (PCC)
QSFP to SFP/SFP+ Adapter Module
Get in touch with our experts
Feedback