Generic 400G AOCQSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT 400G QSFP-DD 8 x 50G PAM4 to 8 x 50G SFP56 25G NRZ Active Optical Breakout Cable, 50m (164ft)
This 50m (164ft) QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT compatible assembly provides 400G AOC connectivity for Generic interfaces in a QSFP-DD to 8x 50G SFP56 configuration. It is supplied as one complete cable, with specifications and installation guidance that help high-density racks balance reach, connector access and airflow while retaining the exact OEM reference required by the host.
OEM Part Number: QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FTHT Part Number: QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT
Product Highlights
- HT-manufactured AOC assembly in 50m (164ft)
- 400G connectivity at 425Gbps (8x 53.125GGbps)
- Interface configuration: QSFP-DD to 8x 50G SFP56
- Fixed length and part number: 50m (164ft), QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT
- Cable construction: OM3
- Maximum power consumption: 10W (QSFP-DD End) 3W (SFP56 Per End)
- Minimum bend radius: 30mm
Specifications
| HT Part Number | QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD to 8x 50G SFP56 |
| Max. Data Rate | 425Gbps (8x 53.125GGbps) |
| Cable Length | 50m |
| Cable Type | OM3 |
| Minimum Bend Radius | 30mm |
| Max. Power Consumption | 10W (QSFP-DD End) 3W (SFP56 Per End) |
| Transmitter Type | VSCEL |
| Receiver Type | PIN |
| Modulation Format | PAM4 |
| Wavelength | 850nm |
| Jacket Material | OFNP |
| BER | 2.4E-4 |
| Inbuilt FEC | No |
| Operating Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | QSFP-DD MSA, SFP56 MSA, IEEE 802.3cd |
Signal and Lane Configuration
The listed modulation format is 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.
Position Within the Length Range
QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT occupies the middle of this family between QSFP-DD to 8x 50G SFP56-400G-AOC-30M98FT at 30m (98ft) and QSFP-DD to 8x 50G SFP56-400G-AOC-70M230FT at 70m (230ft). It adds 20m over the shorter option for extra routing clearance, while the next longer version adds another 20m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
High-Density Rack Integration
In a densely populated rack, connector access and airflow are part of the link design. Choose the shortest length that follows the managed path comfortably, avoid tight bundles around the connector housings and preserve room for latch operation. Where power consumption is listed, include every populated interface in the host thermal budget rather than assessing a single cable in isolation. For this assembly, the minimum bend radius is 30mm; the stated power consumption is 10W (QSFP-DD End) 3W (SFP56 Per End); the jacket material is OFNP.
Power and Thermal Planning
The rated power consumption is 10W (QSFP-DD End) 3W (SFP56 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.
Cable Construction and Routing
This assembly uses OFNP jacket, minimum bend radius 30mm. 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.
Network and Protocol Considerations
The intended application is determined by the host interface and protocol support. Listed interface and protocol references include QSFP-DD MSA, SFP56 MSA, IEEE 802.3cd. Confirm that the host firmware and port configuration support the same operating mode.
Breakout Port Mapping
The QSFP-DD to 8x 50G SFP56 configuration divides the high-speed interface into multiple lower-speed connections. Verify the upstream lane assignment, downstream port speeds and breakout setting on the host before connecting the assembly. Each branch must attach to the correct remote interface.
Integrated Optical Assembly
The optical engines and fiber are permanently integrated into this AOC. There are no detachable optical modules to clean or exchange. Handle the complete assembly by its connector housings and cable, and keep both ends matched to the same interface specification.
Length Selection and Installation Planning
A 50m (164ft) run can remain tidy when its pathway and service allowance are planned together. Keep the integrated optical cable and both optical engines away from tight cable-tie pressure, verify bend control at changes of direction and ensure that neither port supports the assembly’s weight. Record the exact order code after acceptance. Within this family, QSFP-DD to 8x 50G SFP56-400G-AOC-30M98FT is shorter at 30m (98ft), while QSFP-DD to 8x 50G SFP56-400G-AOC-70M230FT is the next longer choice at 70m (230ft); comparing those two boundaries helps avoid both tension and unnecessary slack.
Quality Assurance and Packaging
Each assembly receives a visual connector inspection and functional link check before it is coiled and protected. Packaging is selected to avoid compressing the cable into a tight bundle, and optional rack-based labels help maintain an orderly installation when many identical interfaces are populated together. Neutral packaging and customer-specific packing documentation are available on request.
Ordering Information
Provide the exact part number, length, quantity and target interface density. For multi-rack projects, list each length separately and identify any preferred carton grouping. Host model and software information can be included for a compatibility review before production or dispatch. Keep QSFP-DD to 8x 50G SFP56-400G-AOC-50M164FT associated with 50m (164ft) throughout the order and receiving record.
Generic Compatibility and Factory Testing
The assembly is evaluated for host recognition and stable link operation, with diagnostics checked where the interface provides them. This approach verifies more than electrical or optical continuity. Exact platform and firmware information remains valuable in high-density deployments because port mode and qualification policy can differ within the same connector family. Where supported by the host, receive activity and diagnostic indications are reviewed together with the established link.
Frequently Asked Questions
Is this an original equipment manufacturer cable?
No. It is manufactured by HT under our own manufacturer identity.
Are separate transceivers or patch leads required?
No. This is one complete direct-attach assembly. The ends are not detachable modules and should not be separated from the cable.
Can excess cable be folded into a compact bundle?
No. Use a supported, bend-safe service loop and observe the listed minimum bend radius. Do not crease the cable or tighten ties around the connector boots.
Will any matching connector operate at the same speed?
Not necessarily. Both hosts must support the stated rate, identification, lane mapping and any required breakout configuration; mechanical compatibility alone is insufficient.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production quantities confirmed at order stage. Worldwide courier services are available, with air or sea freight for consolidated shipments; freight-collect delivery and coordination with a customer’s logistics provider can be arranged.
