QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT 400G QSFP-DD 8 x 50G PAM4 to 8 x 50G SFP56 25G NRZ Active Optical Breakout Cable, 25m (82ft)
For a direct equipment connection requiring Generic QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT, this page supplies the 25m (82ft) version with QSFP-DD to 8x 50G SFP56. The cable supports 400G operation and eliminates a separate module-and-patch-cord assembly. Installation, maintenance and spare-cable identification are addressed alongside the full technical details.
OEM Part Number: QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FTHT Part Number: QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT
Product Highlights
- HT-manufactured AOC assembly in 25m (82ft)
- 400G connectivity at 425Gbps (8x 53.125GGbps)
- Interface configuration: QSFP-DD to 8x 50G SFP56
- Fixed length and part number: 25m (82ft), QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT
- 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-25M82FT |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD to 8x 50G SFP56 |
| Max. Data Rate | 425Gbps (8x 53.125GGbps) |
| Cable Length | 25m |
| 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.
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
Choose QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT when the measured managed path justifies 25m (82ft), not simply to leave a large spare coil. Additional reach can simplify adjacent-rack routing, yet unused cable still needs bend-safe storage and ventilation clearance. Keep identification visible so this extended version is not confused with shorter spares. Within this family, QSFP-DD to 8x 50G SFP56-400G-AOC-20M66FT is shorter at 20m (66ft), while QSFP-DD to 8x 50G SFP56-400G-AOC-30M98FT is the next longer choice at 30m (98ft); comparing those two boundaries helps avoid both tension and unnecessary slack.
Position Within the Length Range
QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT occupies the middle of this family between QSFP-DD to 8x 50G SFP56-400G-AOC-20M66FT at 20m (66ft) and QSFP-DD to 8x 50G SFP56-400G-AOC-30M98FT at 30m (98ft). It adds 5m over the shorter option for extra routing clearance, while the next longer version adds another 5m. Measure the managed path and choose this version when its reach is sufficient without creating the slack associated with the longer assembly.
Field Installation and Maintenance
Inspect the route and both connectors before installation, then support the cable without pulling on either connector housing. During maintenance, release the latch properly rather than using the cable as a handle. Keep protection on unused ends, and if the assembly is removed for later use, coil it loosely and record its part number so the same length can be returned to service. 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.
Quality Assurance and Packaging
The cable and both connectors are inspected before a functional link test. Connector protection and bend-safe packing reduce handling damage during transport and storage. Customer or site labels can be added for field inventories, with different lengths separated to simplify issue and return of spare assemblies. Standard protective packing is used by default, with project documentation arranged when requested.
Generic Compatibility and Factory Testing
A field-ready cable needs both correct identification and a stable operating link. Our pre-packing check therefore includes the connectors, host recognition and link behavior. For equipment with uncertain revision history, providing the host model and software release helps identify compatibility requirements before the assembly reaches the installation site. Both connectors are examined before the operating test, which includes receive activity and diagnostic indications.
Frequently Asked Questions
Is this an original equipment manufacturer cable?
No. It is manufactured by HT under our own manufacturer identity.
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.
What details assist a compatibility review?
Provide the equipment manufacturer, model, port type, hardware revision and software release, together with the OEM reference, required length and quantity.
Ordering Information
Request the cable by its exact part number and length, and state the equipment model if compatibility confirmation is needed. Site orders can list quantities by rack or installation team. Any requested label should retain the part number so a removed or spare cable can still be identified accurately. Quantity and any labeling instructions should be attached specifically to QSFP-DD to 8x 50G SFP56-400G-AOC-25M82FT.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, while production quantities are confirmed with the order. 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.
