QDD-SR8-800GJuniper Networks QDD-SR8-800G Compatible 800G QSFP-DD SR8 Transceiver Module 30m on OM3 / 50m on OM4
The QDD-SR8-800G compatible module serves equipment requiring a 800G QSFP-DD interface with 850nm optics and a 30m on OM3 / 50m on OM4 rating. Connection is through MTP/MPO-16 APC. Product data, application guidance and factory verification are presented together to support structured fiber installations preserve a documented and serviceable optical channel.
OEM Part Number: QDD-SR8-800GHT Part Number: QDD-SR8-800G
Product Highlights
- Compatible alternative to Juniper Networks 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 Number | QDD-SR8-800G |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max Data Rate | 850Gbps (8x 106.25Gbps) |
| Wavelength | 850nm |
| Max Cable Distance | 30m@OM3/50m@OM4 |
| Connector | MTP/MPO-16 APC |
| Cable Type | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -4.6-4dBm |
| Minimum Receiver Power | -6.4dBm |
| Power Budget | 1.8dB |
| Receiver Overload | 4dBm |
| Max. Power Consumption | 16W |
| Extinction Ratio | ＞2.5dB |
| Modulation (Electrical) | 8x 100G-PAM4 |
| Modulation (Optical) | 8x 100G-PAM4 |
| Packaging Technology | COB (Chip on Board) Packaging |
| Modulation Format | PAM4 |
| CDR (Clock and Data Recovery) | TX and RX Built-in DSP |
| Inbuilt FEC | No |
| Protocols | QSFP-DD MSA Hardware Rev 7.0, CMIS Rev 5.0, IEEE 802.3df-2024, IEEE 802.3df-2024 |
Applications and Optical Link Design
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.
The multimode channel should use the fiber grade associated with the stated 30m on OM3 / 50m on OM4 reach. Keep the MTP/MPO-16 APC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
Juniper Networks Compatibility and Factory Testing
The module is checked for host recognition as QDD-SR8-800G, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -4.6-4dBm; the stated optical power budget is 1.8dB. During commissioning, record the host diagnostic readings after the link has stabilized and compare them with those limits. DOM values are useful operational indicators, but they do not replace calibrated optical measurements when a link is marginal. Investigate unexpected loss through connector inspection, cleaning and a channel measurement before replacing the module. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Structured Fiber Pathways and Serviceability
Treat the transceiver as part of the complete channel. Follow the intended patch-panel route, maintain bend control and leave service access around the port. Confirm connector polish and fiber type at every mated pair; a documented service allowance is preferable to excess slack concealed inside a rack. For this model, the principal parameters are data rate 850Gbps (8x 106.25Gbps), wavelength 850nm, rated reach 30m on OM3 / 50m on OM4.
Ordering Information
When ordering, specify QDD-SR8-800G, QDD-SR8-800G, quantity and intended host platform. Project labels can repeat these details for receiving and asset records. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
Quality Assurance and Packaging
Each QDD-SR8-800G compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
Frequently Asked Questions
Is this an original Juniper Networks transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies QDD-SR8-800G, not an original Juniper Networks-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.
