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Cisco QDD-SR8-800G Compatible 800G QSFP-DD SR8 Transceiver Module

Cisco QDD-SR8-800G Compatible 800G QSFP-DD SR8 Transceiver Module

The QDD-SR8-800G compatible module is intended for Cisco platforms requiring a 800G QSFP-DD transceiver. It specifies wavelength 850nm, reach 30m on OM3 / 50m on OM4 with MTP/MPO-16 APC through MMF.

OEM Part Number: QDD-SR8-800GHT Part Number: QDD-SR8-800G

Product Highlights

  • Compatible alternative to Cisco QDD-SR8-800G
  • 800G connectivity at 850Gbps (8x 106.25Gbps)
  • Optical wavelength: 850nm
  • Specified reach: 30m on OM3 / 50m on OM4
  • MTP/MPO-16 APC / MMF interface
  • Factory compatibility verification and optical performance testing before shipment

Specifications

HT Part NumberQDD-SR8-800G
ManufacturerHT
Form FactorQSFP-DD
Max Data Rate850Gbps (8x 106.25Gbps)
Wavelength850nm
Max Cable Distance30m@OM3/50m@OM4
ConnectorMTP/MPO-16 APC
Cable TypeMMF
Transmitter TypeVCSEL
Receiver TypePIN
TX Power-4.6-4dBm
Minimum Receiver Power-6.4dBm
Power Budget1.8dB
Receiver Overload4dBm
Max. Power Consumption16W
Extinction Ratio>2.5dB
Modulation (Electrical)8x 100G-PAM4
Modulation (Optical)8x 100G-PAM4
Packaging TechnologyCOB (Chip on Board) Packaging
Modulation FormatPAM4
CDR (Clock and Data Recovery)TX and RX Built-in DSP
Inbuilt FECNo
ProtocolsQSFP-DD MSA Hardware Rev 7.0, CMIS Rev 5.0, IEEE 802.3df-2024, IEEE 802.3df-2024

Applications and Deployment

Typical deployments include switch-to-switch, switch-to-server and aggregation links inside a data hall or between adjacent equipment rooms. The MTP/MPO-16 APC interface connects to the specified multimode cabling, and the stated reach depends on fiber grade and link loss. Keep this interface on the matching multimode optical standard rather than connecting it directly to a single-mode wavelength or reach variant.

Before deployment, check the host port type, supported data rate and firmware requirements. The 800G interface configuration must match the remote equipment; sharing a QSFP-DD housing alone does not make two transceiver types interoperable.

Cisco Compatibility and Testing

The module is programmed for equipment that recognizes the QDD-SR8-800G part number. Before shipment, we check EEPROM identification, link establishment and diagnostic readouts, then verify transmit and receiver performance against the stated optical specifications. Host hardware and software revisions can affect third-party module acceptance, so customers can provide the switch model and software release for a compatibility check before ordering.

Ordering Information

Quote HT part number QDD-SR8-800G together with OEM part number QDD-SR8-800G and the required quantity. Standard modules use our factory label; neutral labels, customer-branded packaging and project-specific compatibility coding are available on request. For mixed-brand installations, select the corresponding brand-specific page instead of assuming one EEPROM version fits every platform.

Frequently Asked Questions

Is this an original Cisco transceiver?

No. It is an HT-manufactured compatible alternative for equipment that specifies QDD-SR8-800G, not an original Cisco-branded module.

Which fiber and connector are required?

Use MTP/MPO-16 APC with MMF. The specified maximum reach is 30m on OM3 / 50m on OM4, subject to fiber quality and total link loss.

Can it be mixed with another wavelength or reach version?

Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.

Quality Assurance and Packaging

Each unit undergoes optical performance checks, compatibility verification and visual inspection before packing. Modules are supplied in protective blister trays or anti-static packaging and then cartoned for transport. Custom labels and project packing lists can be added for volume orders.

Shipping and Lead Time

Standard products normally ship within one to three working days. Worldwide courier, air freight and sea freight options are available, and shipments can also be sent on your own courier account or delivered to an appointed forwarder.

 

Get a quick quote

Please write to sales@huihongfiber.com, we will reply as soon as possible.


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