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100G DUPLEX QSFP28

100G QSFP28 LR4 Fiber Optic Transceiver Module 1310nm 20km LC SMF DDM | FLD-QSFP28-LR4-20 | Fiberland

100G QSFP28 LR4 1310nm 20km

Rate100GReach20kmWavelength1310InterfaceLC
Fiberland part number
FLD-QSFP28-LR4-20
Unit price110.00USD / piece
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At a glance

Key Specifications

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Form TypeQSFP28

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Model data

Technical Specifications

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14 specifications shown
Fiberland Part NumberFLD-QSFP28-LR4-20Vendor NameFIBERLAND
Data Rate100GWavelength1310
Reach20kmForm TypeQSFP28
Optical InterfaceLCDDM SupportYES
Commercial Temp.0~70℃Industrial Temp.-40~85℃
Compatible BrandsCisco,Huawei,Nvidia...200+ brandsComplianceCE,FCC,ROHS,REACH
Warranty3 YearsModeSM
Compatible model reference

Product Compatibility Mapping

Cross-reference the original manufacturer part number with the corresponding Fiberland part number before confirming the target device and firmware.

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Verified cross-references4 manufacturer part numbersAcross 2 brands
Showing 4 of 4 verified matches

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Original part numberBrandFiberland part numberProduct description
SO-QSFP28-LR4-20LSMARTOPTICSFLD-QSFP28-LR4-20100G extended-reach LR4 QSFP28 transceiver, LAN-WDM 1310 nm band, 20 km over duplex single-mode fiber, LC, with digital diagnostics.
SO-QSFP28-LR4-20DSMARTOPTICSFLD-QSFP28-LR4-20100G extended-reach LR4 QSFP28 transceiver, LAN-WDM 1310 nm band, 20 km over duplex single-mode fiber, LC, with digital diagnostics.
FTLC1156RDPLACOHERENT / FINISARFLD-QSFP28-LR4-20100G extended-reach LR4 QSFP28 transceiver, LAN-WDM 1310 nm band, 20 km over duplex single-mode fiber, LC, with digital diagnostics.
FTLC1154RDPLDCOHERENT / FINISARFLD-QSFP28-LR4-20100G extended-reach LR4 QSFP28 transceiver, LAN-WDM 1310 nm band, 20 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.

Link and application reference

See Where This Product Fits in the Network

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Application planning

Optical Transceiver Application and Link Map

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Optical transceiver application diagram covering data center, DCI, campus, server and metro networks
Testing and quality reference

Review the Quality-Control and Test Flow

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Testing and quality

Quality Control and Test Flow

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Quality control flow covering material, firmware, optical, temperature, compatibility and final QA checks
Product FAQ

Frequently Asked Questions

Answers to common compatibility, installation and troubleshooting questions.

Will DOM values appear correctly on third-party transceivers?

With a properly compatible module and supported host platform, DOM/DDM values should normally be accessible through the network equipment's management interface.

Will compatible transceivers work after a switch firmware upgrade?

They often do, but firmware changes can modify transceiver validation behavior. Compatibility should therefore be verified when deploying modules on newly updated network operating systems.

Does the OEM part number need to match exactly?

The exact OEM reference is useful for identifying compatibility, but the optical specifications and host-platform requirements must also match the intended application.

How can I tell whether the problem is compatibility-related or an optical-link problem?

Check whether the host correctly identifies the transceiver first. If the module is rejected, incorrectly identified, or generates vendor-related warnings, investigate compatibility. If it is correctly recognized but the link remains down, investigate fiber, optical power, wavelength, FEC, polarity, and the remote endpoint.

Why does the compatible transceiver work in some ports but not others on the same switch?

Ports on the same device may support different speeds, breakout modes, interface types, or configuration settings. Check the affected port's supported transceiver types, configured speed, lane mode, and other platform-specific requirements.

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Technical proof for faster project review

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