400G QSFP-DD to OSFP56 Twinax Passive Copper Cable (0.5-3m): 400G-PDAC-QSFP-DD-OSFP
400G QSFP-DD to OSFP56 Passive DAC Cable Overview
Our 400G QSFP-DD to OSFP56 Passive DAC Twinax Copper Cable delivers next-generation ultra-high-speed connectivity for hyperscale data centers. Supporting data rates from 106.25 to 425 Gbps with lengths from 0.5m to 3m, this AWG 28 twinax cable provides reliable, low-latency performance for spine-leaf architectures. Operating at 0-70°C with zero power consumption, enabling cost-effective 400G deployments.
- Cable Type: Passive Direct Attach Cable (PDAC)
- Cable Configuration: Point-to-Point
- Connector Type: QSFP-DD to OSFP56
- Supported Data Rate: 106.25 Gbps - 425 Gbps
- Maximum Distance: 3 m
- AWG (Wire Gauge): 28
- DDM/DOM: Supported
- Temperature Range: Standard 0°-70°C
- MTBF: 1000000 hours
400G QSFP-DD to OSFP56 Passive DAC Pricing
SKU:400G-PDAC-QSFP-DD-OSFP
Made to Order - 2 Weeks400G QSFP-DD to OSFP56 Twinax Passive Copper Cable (0.5-3m) Specification
Cable Type | Passive Direct Attach Cable (PDAC) |
Cable Configuration | Point-to-Point |
Connector Type | QSFP-DD to OSFP56 |
Supported Data Rate | 106.25 Gbps - 425 Gbps |
Supported Ethernet Applications | 400G Ethernet (425 Gbps), 200G Ethernet (212.5 Gbps), 100G Ethernet PAM4 (106.25 Gbps) |
Supported InfiniBand Applications | InfiniBand HDR (200 Gbps) |
Maximum Distance | 3 m |
Media Type | Twinax Copper Cable |
AWG (Wire Gauge) | 28 |
DDM/DOM | Supported |
Temperature Range | Standard 0°-70°C |
MTBF | 1000000 hours |
Compliance | QSFP-DD MSA, CE, RoHS, IEEE 802.3cd, OSFP MSA, IEEE 802.3ck, CMIS V4.0, SFF-8636, InfiniBand HDR |
400G QSFP-DD to OSFP56 Twinax Passive Copper Cable (0.5-3m) Datasheet
v2Complete technical specifications and product details
400G QSFP-DD to OSFP56 Twinax Passive Copper Cable (0.5-3m) Description
The EDGEOPTIC 400G-PDAC-QSFP-DD-OSFP is a passive direct attach copper cable built for seamless connectivity between QSFP-DD and OSFP56 interfaces, making it a practical solution for modern 400 Gigabit Ethernet and InfiniBand HDR environments. With QSFP-DD on one end and OSFP56 on the other, it enables straightforward point-to-point connections between different switch platforms, which is especially useful in mixed-vendor or transitional data center deployments. It’s well suited for short-reach, high-bandwidth links in spine-leaf architectures, AI/ML clusters, and hyperscale infrastructure.
Designed to support 400G data rates, the cable also accommodates 100G and 200G Ethernet, offering flexibility for networks operating at different speeds or gradually upgrading their infrastructure. In InfiniBand environments, it supports HDR, providing the bandwidth required for high-performance computing, AI training workloads, and GPU-driven applications where fast and stable interconnects are essential.
As a passive DAC solution, the cable operates without external power and introduces virtually no latency, making it an efficient choice for performance-critical environments. It uses high-quality twinax copper with an AWG28 construction across lengths from 0.5 to 3 meters, ensuring reliable signal integrity while remaining flexible enough for dense rack installations.
The cable supports DDM/DOM functionality, allowing real-time monitoring of key parameters such as temperature and voltage. This helps network operators maintain visibility and quickly address potential issues before they impact performance.
Built for standard data center conditions, it operates within a temperature range of 0 to 70°C and offers an MTBF of 1,000,000 hours, supporting long-term, stable operation. Its robust design and compatibility make it a dependable option for connecting next-generation switches, GPU clusters, and high-speed storage systems.
Each cable is carefully tested before delivery, including electrical performance checks and connector inspections, to ensure consistent quality and reliability in demanding environments.