Fiberland FLD-QDD-400G-LR4 has 9 recorded cross-reference matches across 5 manufacturers. Research equivalent, alternate or similar parts using the listed candidates, and check their source notes before selecting a replacement.
Arista Networks QDD-400G-LR4 versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: ARISTA.
Cisco QDD-400G-LR4-S versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: CISCO.
Coherent / Finisar (source group) FTCD4323E2PCL versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: COHERENT / FINISAR.
Coherent / Finisar (source group) FTCD4323E3PCL versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: COHERENT / FINISAR.
H3C QSFPDD-400G-LR4-WDM1300-DC versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: H3C.
Juniper Networks 740-096176 versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. The original-OEM specification source cited by Fiberland is preserved for traceability; it has not been independently checked in this batch and is not evidence that the OEM endorses Fiberland. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: JUNIPER.
Juniper Networks QDD-400G-LR4-10 versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: JUNIPER.
SMARTOPTICS SO-QSFP-DD-4C-LR4 versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: SMARTOPTICS.
SMARTOPTICS SO-QSFP-DD-4C-LR4-4 versus Fiberland FLD-QDD-400G-LR4:
Fiberland-published compatibility assertion, not independent validation or original-OEM approval. Fiberland states MSA compliance alone does not guarantee host compatibility and each link end must have host-compatible coding. The printed Fiberland model is configurable: obtain the correct host-coded and temperature-rated configuration; do not infer second-degree equivalents through this shared model. Published description: 400GBASE-LR4-10 QSFP-DD transceiver, CWDM 1310 nm band, 10 km over duplex single-mode fiber, LC, with digital diagnostics. Specify the original OEM host platform and firmware; confirm required EEPROM/vendor coding with Fiberland. A shared Fiberland model across OEM brands does not establish cross-OEM interchangeability or OEM approval. Confirm exact form factor, electrical protocol, rate, wavelength, reach/link budget, connector, fiber type, DOM/DDM, power and environmental grade against both current datasheets. Original brand label: SMARTOPTICS.
Find additional research candidates through a shared connecting part. Each result is labeled Second-degree candidate · Unverified and shows both recorded source relationships.
Two recorded crosses do not establish a verified equivalent. Compare current specifications, interfaces, ratings, cable requirements and the same PCB footprint or panel fit before substitution. Candidate counts are separate from direct-cross and part totals.
FLD-QDD-400G-LR4 replacement and similar-part research
Looking for an equivalent or alternate to Fiberland FLD-QDD-400G-LR4? The 9 recorded candidates above link to individual part pages and the evidence behind each relationship.
A recorded cross reference does not establish a drop-in replacement. Compare current datasheets, package or mounting dimensions, pinout, electrical ratings and operating conditions for your application. Similar parts can differ in critical specifications.
Counts describe recorded relationships, not stock, sales, testing or independent qualification. Manufacturer-and-part identities remain separate. Indexing dates do not establish current specifications or availability.
Check current manufacturer documents and electrical, mechanical, environmental and application requirements before selecting a replacement.