QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT 400G QSFP-DD 8 x 50G PAM4 Passive Copper Twinax Cable, 1.5m (5ft)

For short, high-density connections, this DAC cable combines 400G performance with a fixed 1.5m (5ft) cable run. It corresponds to Generic QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT and uses a factory-terminated passive copper link without separate optical modules or patch cords.

OEM Part Number: QSFP-DD to QSFP-DD-400G-DAC-1.5M5FTHT Part Number: QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT

Product Highlights

• HT-manufactured DAC assembly in 1.5m (5ft)
• 400G connectivity at 400Gbps
• Interface configuration: QSFP-DD to QSFP-DD
• Fixed length and part number: 1.5m (5ft), QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT
• Cable construction: Passive Twinax
• Conductor specification: 30AWG
• Maximum power consumption: 0.1W Per End
• Minimum bend radius: 33mm

The listed modulation format is 8x 50Gbps PAM4. Both host interfaces must be configured for the same aggregate rate and lane arrangement. A connector that fits mechanically does not by itself guarantee that the remote port supports this encoding or breakout mode.

QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT occupies the middle of this family between QSFP-DD to QSFP-DD-400G-DAC-1M3FT at 1m (3ft) and QSFP-DD to QSFP-DD-400G-DAC-2M7FT at 2m (7ft). It adds 0.5m over the shorter option for extra routing clearance, while the next longer version adds another 0.5m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.

The rated power consumption is 0.1W Per End. Include this load in the host-port power and thermal budget, especially in densely populated switches. Maintain front-panel clearance and do not bundle the cable so tightly that it obstructs airflow around the connectors.

This assembly uses 30AWG conductors, PET jacket, minimum bend radius 33mm. These mechanical characteristics affect how the cable should be dressed behind the equipment. Avoid sharp edges, excessive ties and repeated tight bends close to the connector boots.

The intended application is 400G Ethernet. Listed interface and protocol references include IEEE 802.3cd, QSFP-DD MSA, CMIS 4.0. Confirm that the host firmware and port configuration support the same operating mode.

A passive DAC has no separate optical conversion stage. Its low-power, low-latency operation is useful for short equipment links, but the assembly must remain within the length and signaling mode accepted by both hosts.

The additional half metre beyond a one-metre assembly gives QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT useful routing flexibility when the ports are not directly aligned. It can accommodate a different rack unit or a short service loop, but excess cable should be dressed loosely rather than folded into a tight coil.

Our compatibility setup for Generic QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT is checked together with the physical 1.5m (5ft) assembly. Factory verification covers connector condition, host identification, error-free link establishment and electrical continuity, link stability and diagnostic readouts. Providing the exact host model and firmware release helps us identify platform-specific requirements before production.

Use part number QSFP-DD to QSFP-DD-400G-DAC-1.5M5FT for the 1.5m (5ft) assembly. For mixed-length projects, list each required part number and quantity separately so that every cable can be tested and packed according to its intended installation.

Production inspection covers both physical condition and a live link check. Connector ends receive individual protection, and the completed assembly is packed without tight ties or sharp bends. For multi-length projects, cartons can be separated and labelled by OEM part number to simplify installation on site.

Lead time for ordinary configurations is normally one to three working days, while production quantities are confirmed with the order. We can arrange express courier or economy freight according to destination and carton volume, or hand the shipment to your appointed logistics provider.