The 400G QSFP-DD QDD 4X100G FR Si Optical Transceiver is a QSFP-DD optical transceiver delivering 400Gbps over SMF. Operating at 1310nm with a MPO-12 interface, it reaches 2km and is compliant with IEEE Std 802.3, QSFP-DD MSA, CMIS 4.0. Built-in digital diagnostics give real-time access to operating parameters, making the module easy to deploy and maintain in 400G Ethernet data center and cloud network environments.
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
In 400G Ethernet data center and cloud network environments, the 400G QSFP-DD QDD 4X100G FR Si Optical Transceiver delivers 400Gbps transmission over SMF with a reach of 2km. With its MPO-12 optical interface, the module works directly with the SMF infrastructure already installed in most facilities. Our factory programs the compatibility coding for your switch brand before shipment and verifies each unit on real host equipment. The link runs 8x50G-PAM4 modulation, which keeps it aligned with current 400G switch silicon.
Standards and Compatibility
This product is designed and tested to comply with IEEE Std 802.3, QSFP-DD MSA, CMIS 4.0. It plugs into any standards-based QSFP-DD port, and compatibility coding for specific switch or router brands can be done in our factory before shipment.
Ordering Information
Our part number for this module is QDD-4X100G-FR-Si. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
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.
Built to Your Spec
Our product line has grown with the industry for three decades, from GBIC-era modules to today's 800G and 1.6T interconnects. If the exact configuration you need is not listed, we can usually build it: custom lengths, mixed connector breakouts, OEM branding and project-specific firmware coding are all supported.
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.
Tested Before Shipment
We do not ship untested stock. Each transceiver and cable is powered up in our test racks, checked for link stability, transmit power, receiver sensitivity and diagnostic readouts, and only then packed for delivery. This factory-level testing is one reason network integrators keep reordering from us year after year.
