Designed for 400G Ethernet data center and cloud network environments, the 400G QSFP-DD QDD 4X100G FR Si Optical Transceiver provides 400Gbps throughput in a QSFP-DD form factor. It operates at 1310nm over SMF through a MPO-12 connector and supports link lengths up to 2km. The module meets IEEE Std 802.3, QSFP-DD MSA, CMIS 4.0 and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP-DD form factor, 400Gbps data rate
- Wavelength: 1310nm
- Connector: MPO-12
- Reach: up to 2km
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Part Number | QDD-4X100G-FR-Si |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max. Data Rate | 400Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 2km |
| Connector | MPO-12 |
| Media | SMF |
| Transmitter Type | CW DFB |
| Receiver Type | PIN |
| TX Power | -3.1~4.0dBm |
| Minimum Receiver Power | -7.1dBm |
| Power Budget | 4dB |
| Receiver Overload | 4.0dBm |
| Max. Power Consumption | 11W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 8x50G-PAM4 |
| Modulation (Optical) | 4x100G-PAM4 |
| DSP | TX and RX |
| Inbuilt FEC | Support |
| Core Size | 9um/125um |
| Packaging Technology | TO-CAN for CW laser |
| Protocols | IEEE Std 802.3, QSFP-DD MSA, CMIS 4.0 |
Applications
Built for 400G Ethernet data center and cloud network environments, this QSFP-DD module carries 400Gbps over SMF up to 2km per link. The MPO-12 interface and 1310nm optics match the standard cabling plant used in modern data halls, so existing trunks can be reused. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment.
Standards and Compatibility
Standards compliance covers IEEE Std 802.3, QSFP-DD MSA, CMIS 4.0. The unit works in any equipment with a standard QSFP-DD interface; if your network uses a specific vendor's coding, tell us the switch model and we will program and verify it before delivery.
Ordering Information
To order, quote QDD-4X100G-FR-Si 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.
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.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.
Quality Assurance
Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.
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.