QDD-SR8-800GJuniper Networks QDD-SR8-800G Compatible 800G QSFP-DD Transceiver Module 50m on OM4
The QDD-SR8-800G compatible module serves equipment requiring a 800G QSFP-DD interface with 850nm optics and a 50m on OM4 rating. Connection is through Dual MTP/MPO-12 APC. Product data, application guidance and factory verification are presented together to support high-density deployments balance optical performance, port access and thermal planning.
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: 50m on OM4
- Dual MTP/MPO-12 APC / MMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
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 | 50m@OM4 |
| Connector | Dual MTP/MPO-12 APC |
| Media | MMF |
| Transmitter Type | VCSEL |
| Receiver Type | PIN |
| TX Power | -4.6~4dBm |
| Minimum Receiver Power | -6.3dBm |
| Power Budget | 1.7dBm |
| Receiver Overload | 4dBm |
| Power Consumption | ＜16W |
| Extinction Ratio | 2.5dB |
| Modulation (Electrical) | 8x100G-PAM4 |
| Modulation (Optical) | 8x100G-PAM4 |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Protocols | IEEE 802.3df, IEEE 802.3ck QSFP-DD HW Rev 6.2, CMIS Rev 4.0 |
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 Dual MTP/MPO-12 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 50m on OM4 reach. Keep the Dual MTP/MPO-12 APC end faces clean and avoid tight bends. Different multimode standards are not interchangeable merely because they share a connector.
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.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -4.6~4dBm; the stated optical power budget is 1.7dBm. 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. Diagnostic monitoring is listed as Supported. 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.
High-Density Port and Thermal Planning
In a densely populated chassis, connector access and airflow form part of the optical-link design. Confirm that neighboring modules and patch leads leave room for latch operation, and include listed power consumption in the host thermal budget. Assess port density together with fiber management. For this model, the principal parameters are data rate 850Gbps (8x 106.25Gbps), wavelength 850nm, rated reach 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.
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.
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 Dual MTP/MPO-12 APC with MMF. The specified maximum reach is 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.
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.
