400G QSFP-DD ER4 1310nm 40km
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| Fiberland Part Number | FLD-QDD-400G-ER4 | Vendor Name | FIBERLAND |
|---|---|---|---|
| Data Rate | 400G | Wavelength | 1310 |
| Reach | 40km | Form Type | QSFP-DD |
| Optical Interface | LC | DDM Support | YES |
| Commercial Temp. | 0~70℃ | Industrial Temp. | - |
| Compatible Brands | Cisco,Huawei,Nvidia...200+ brands | Compliance | CE,FCC,ROHS,REACH |
| Warranty | 3 Years | Mode | SM |
Cross-reference the original manufacturer part number with the corresponding Fiberland part number before confirming the target device and firmware.
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| Original part number | Brand | Fiberland part number | Product description |
|---|---|---|---|
| TQD031-SN4C-SO | SMARTOPTICS | FLD-QDD-400G-ER4 | 400GBASE-ER4 QSFP-DD transceiver, nano-LAN-WDM 1310 nm band, 40 km over duplex single-mode fiber, LC, with digital diagnostics. |
A part-number cross-reference is a model-selection starting point, not a blanket device guarantee. Final fit depends on the exact device, firmware or OS, target port and requested coding profile.
Review common data-center, DCI, campus, server and metro-network connections before confirming speed, reach, fiber type and connector.
Compare representative network topologies and link paths to identify the appropriate product family for the intended deployment.
Follow the checkpoints used to verify materials, firmware, optical performance, temperature stability, compatibility and final inspection.
Review the sequence from material verification and firmware programming through optical, temperature, compatibility and final QA inspection.
Answers to common compatibility, installation and troubleshooting questions.
Yes. The transceivers do not normally need to be from the same manufacturer. Their Ethernet standard, wavelength, fiber type, lane configuration, reach, and other link requirements must be compatible.
Start with the host equipment and port requirements, then match the data rate, form factor, wavelength, reach, connector, fiber type, optical standard, and OEM compatibility. For high-speed interfaces, also verify FEC and other platform-specific requirements.
Provide the transceiver part number, corresponding OEM part number, switch or router brand and exact model, operating system or firmware version, port number and speed, error messages, DDM/DOM readings, and information about the transceiver and equipment at the opposite end of the link.
In many networks, OEM and compatible transceivers are deployed in different ports of the same device. Each module should meet the requirements of its individual interface.
Equipment compatibility determines whether the host device recognizes and operates with the module. Optical compatibility determines whether the two ends of the fiber link can communicate correctly. A successful deployment requires both.
Move from model selection to internal approval with the documents, compatibility checks and verification paths buyers use most.
01Technical filesFind model-level specifications, drawings and selection documents before internal review.
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02Device fitReview device, firmware and coding fit before specifying a module for your network.
Check compatibility
03VerificationSee optical, functional and pre-shipment checks used to verify product performance.
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04Project approvalReview certification routes and request supporting documents for project approval.
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