40G QSFP+ LR4 Fiber Optic Transceiver Module

Name: 40G QSFP+ LR4 Fiber Optic Transceiver Module 1310nm 10km LC SMF DDM | FLD-QSFP+LR4 | Fiberland
Brand: Fiberland
SKU: FLD-QSFP+LR4

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Key Specifications

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Form TypeQSFP+

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Model data

Technical Specifications

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14 specifications shown

Fiberland Part Number	FLD-QSFP+LR4	Vendor Name	FIBERLAND
Data Rate	40G	Wavelength	1310
Reach	10km	Form Type	QSFP+
Optical Interface	LC	DDM Support	YES
Commercial Temp.	0~70℃	Industrial Temp.	-40~85℃
Compatible Brands	Cisco,Huawei,Nvidia...200+ brands	Compliance	CE,FCC,ROHS,REACH
Warranty	3 Years	Mode	SM

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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Showing 8 of 19 verified matches

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Original part number	Brand	Fiberland part number	Product description
QSFP-40G-LR4-S	CISCO	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
QSFP-40G-LR4	CISCO	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
QSFP-40G-LR4	ARISTA	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
JH232A	HP	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
JG661A	HP	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
JQ075A	HP	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
JNP-QSFP-40G-LR4	JUNIPER	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
QSFPP-40G-LR4-C	JUNIPER	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
QSFPP-40GBASE-LR4	JUNIPER	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
F8CG0	DELL	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
407-BBGL	DELL	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
407-BBGN	DELL	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
FTL4C1QE3C	COHERENT / FINISAR	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
FTL4C1QW2N	COHERENT / FINISAR	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
40G-QSFP-LR4	BROCADE	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
57-1000263-01	BROCADE	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
10320	EXTREME NETWORKS	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
40G-LR4-QSFP10KM	EXTREME NETWORKS	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex LC, with digital diagnostics.
QSFP-40G-LR4-WDM1300	H3C	FLD-QSFP+LR4	40GBASE-LR4 QSFP+ transceiver, 1310 nm CWDM band, 10 km over single-mode fiber, duplex 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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Optical transceiver application diagram covering data center, DCI, campus, server and metro networks — Application planning
Optical Transceiver Application and Link Map
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Testing and quality reference

Review the Quality-Control and Test Flow

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Quality control flow covering material, firmware, optical, temperature, compatibility and final QA checks — Testing and quality
Quality Control and Test Flow
Review the sequence from material verification and firmware programming through optical, temperature, compatibility and final QA inspection.
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Product FAQ

Frequently Asked Questions

Answers to common compatibility, installation and troubleshooting questions.

Why does a high-speed compatible transceiver show FEC errors?

FEC errors may result from incompatible FEC settings, excessive optical loss, signal-quality problems, incorrect fiber infrastructure, or incompatible link parameters. Verify that both ends use the required FEC mode for the interface.

Is FEC important when using high-speed compatible transceivers?

Yes. Forward Error Correction is an important consideration for many 25G, 50G, 100G, 200G, 400G, and 800G interfaces. Both ends of the link must use compatible FEC and interface settings.

How is a transceiver made compatible with a specific switch brand?

Compatibility is typically achieved through EEPROM programming, identification parameters, interface compliance, and platform-specific coding so that the host device can correctly recognize and communicate with the transceiver.

Do compatible transceivers support hot swapping?

Most SFP-family, QSFP-family, and similar pluggable transceivers are designed for hot-pluggable operation according to the applicable interface specification. Host-equipment procedures should still be followed.

What does an “unsupported transceiver” message mean?

It usually means the host device does not recognize or approve the identification information stored in the module. It does not necessarily indicate an optical failure.

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40G QSFP+ LR4 Fiber Optic Transceiver Module 1310nm 10km LC SMF DDM | FLD-QSFP+LR4 | Fiberland

Key Specifications

Technical Specifications

Product Compatibility Mapping

See Where This Product Fits in the Network

Optical Transceiver Application and Link Map

Review the Quality-Control and Test Flow

Quality Control and Test Flow

Frequently Asked Questions

Why does a high-speed compatible transceiver show FEC errors?

Is FEC important when using high-speed compatible transceivers?

How is a transceiver made compatible with a specific switch brand?

Do compatible transceivers support hot swapping?

What does an “unsupported transceiver” message mean?

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