Cisco Compatible 800G QSFP-DD QDD 2FR4 Optical Transceiver
Designed for 800G Ethernet data center and cloud network environments, the Cisco Compatible 800G QSFP-DD QDD 2FR4 Optical Transceiver provides 850Gbps (8x 106.25Gbps) throughput in a QSFP-DD form factor. It operates at 1271nm, 1291nm, 1311nm and 1331nm over SMF through a Dual Duplex LC/UPC connector and supports link lengths up to 2km. The module meets IEEE 802.3cu-2021, IEEE 802.3ck-2022, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP-DD form factor, 850Gbps (8x 106.25Gbps) data rate
- Wavelength: 1271nm, 1291nm, 1311nm and 1331nm
- Connector: Dual Duplex LC/UPC
- Reach: up to 2km
- Fiber media: SMF
Specifications
| Cisco Compatible | QDD-2X400G-FR4 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max Data Rate | 850Gbps (8x 106.25Gbps) |
| Wavelength | 1271nm, 1291nm, 1311nm and 1331nm |
| Max Cable Distance | 2km |
| Connector | Dual Duplex LC/UPC |
| Media | SMF |
| Transmitter Type | EML |
| Receiver Type | PIN |
| TX Power | -3.2~4.4dBm |
| Minimum Receiver Power | -7.2dBm |
| Power Budget | 4dB |
| Receiver Overload | 4.4dBm |
| Max Power Consumption | 17W |
| Extinction Ratio | ≥3.5dB |
| Modulation (Electrical) | 8x100G-PAM4 |
| Modulation (Optical) | 8x100G-PAM4 |
| Packaging Technology | COB (Chip on Board) Packaging |
| CDR (Clock and Data Recovery) | TX and RX Built-in DSP |
| Inbuilt FEC | No |
| Protocols | IEEE 802.3cu-2021, IEEE 802.3ck-2022, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0 |
Applications
The Cisco Compatible 800G QSFP-DD QDD 2FR4 Optical Transceiver is used in 800G Ethernet data center and cloud network environments, where it provides an 850Gbps (8x 106.25Gbps) link over SMF up to 2km. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. For networks standardized on Cisco hardware, it is a drop-in equivalent of the QDD-2X400G-FR4. The link runs 8x100G-PAM4 modulation, which keeps it aligned with current 800G switch silicon.
Standards and Compatibility
On the compatibility side, this unit is the practical equivalent of the Cisco part QDD-2X400G-FR4 and works in Cisco systems out of the box. Standards compliance covers IEEE 802.3cu-2021, IEEE 802.3ck-2022, QSFP-DD MSA HW Rev 6.01, CMIS Rev 5.0.
Ordering Information
To order, quote QDD-2FR4-800G together with your quantity. Stock items ship quickly; for OEM orders we support custom labels, retail packing and vendor-specific coding, all handled in our own factory.
Worldwide Delivery
We ship to customers around the world every week. Express couriers handle most orders door to door in a few days; larger consignments go by air or sea to keep freight costs down. Tracking information is provided for every shipment, and we are flexible on shipping accounts and forwarders.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packaging Options
Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.
Factory Custom Capability
Working directly with the manufacturer means no middleman limits. We support OEM and ODM projects, custom cable assemblies, alternative packaging and compatibility coding for major equipment vendors, with engineering support from the same team that designs our standard products.
