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100GBASE-LR4 100G 10km QSFP28 LR4


Hilink 100G LR4 QSFP28 optical transceivers (HL-QSFP28-4LR4C) are designed for use in 100-Gigabit Ethernet links up to 10km on Single Mode Fiber (SMF).

Product description

This product is a 100Gb/s transceiver module designed for optical communication applications compliant to 100GBASE-LR4 of the IEEE P802.3ba standard. 

The module converts 4 input channels of 25Gb/s or 27.9GB/s electrical data to 4 channels of LAN WDM optical signals and then multiplexes them into a single channel

for 100Gb/s optical transmission

Reversely on the receiver side, the module de-multiplexes a 100Gb/s optical input into 4 channels of LAN WDM optical signals and then converts them to 4 output channels of

electrical data.

The central wavelengths of the 4 LAN WDM channels are 1295.56, 1300.05, 1304.58 and 1309.14 nm as members of the LAN WDM wavelength grid defined in IEEE 802.3ba. The high performance cooled LAN WDM EA-DFB transmitters and high sensitivity PIN receivers provide superior performance for 100Gigabit Ethernet applications up to 10km links and compliant to optical interface with IEEE802.3ba Clause 88 100GBASE-LR4 requirements.


Duplex LC receptacle optical interface

Single +3.3V power supply

Hot-pluggable QSFP28 MSA form factor

4x28G Electrical Serial Interface (CEI-28G-VSR)

AC coupling of CML signals

Transmitter: cooled 4x25Gb/s LAN WDM EML TOSA (1295.56, 1300.05, 1304.58, 1309.14nm)

Receiver: 4x25Gb/s PIN ROSA

Low power dissipation (Max: 4W)

Built in digital diagnostic function

Operating case temperature range:0℃ to 70℃

Compliant with 100GBASE-LR4

I2C Communication Interface



Infiniband QDR and DDR interconnects

100G Datacom connections


Compliant with IEEE 802.3ba

Compliant with QSFP28 MSA hardware specifications

Compliant with RoHS

The Hilink QSFP28 series

PackagePart NumberData RateReachWaveTX RX SensPower ConsInterface
QSFP28 SR4HL-QSFP28-SR4100G150m850-8.4~2.4-10.3<2WMPO
QSFP28 PSM4HL-QSFP28-PSM4100G2km1310-6.0~2.0-10.1<3.5WMPO
QSFP28 CWDM4HL-QSFP28-IR4100G2kmCWDM-6.5~2.5-10.1<3.5WLC
QSFP28 LR4HL-QSFP28-LR4100G10kmLAN WDM-4.3~4.5-10.6<3.5WLC
QSFP28 LR4 25KMHL-QSFP28-25K100G25kmLAN WDM-4.1~4.5-11.5<3.5WLC
QSFP28 ER4 LiteHL-QSFP28-ER4100G40kmLAN WDM-2.5~4.5-18.5<4WLC