

100G QSFP28 Transceiver
100GBASE-SR4 QSFP28 100m Optical Transceiver
100GBASE-SR4 QSFP28 optical transceiver for parallel multimode links up to 70m on OM3 or 100m on OM4, with an 850nm MPO interface, DDM/DOM and host FEC.
Specifications
- Warranty
- 3-Years
- Customization
- Free OEM labeling
- Delivery Time
- 48 hours dispatch
- Confirm the short-reach link conditions first.
Suitable for data center and enterprise short-reach links.
100G QSFP28 port
MPO parallel multimode fiber
Reach up to 100m
Confirm that the host device supports a standard 100G QSFP28 port, host FEC and the required compatibility coding.
Use OM3 or OM4 parallel multimode fiber with the correct MPO connector and polarity.
Check fiber grade, MPO polarity, insertion loss and total route length before deployment.
- Match the SR4 module to the fiber plant.
Confirm the host port, FEC setting, MPO polarity and multimode fiber grade before ordering.
Ethernet standard | IEEE 802.3bm 100GBASE-SR4 |
|---|---|
Data rate | 100GbE (4 × 25.78Gbps optical lanes) |
Form factor | QSFP28 |
Maximum reach | 70m on OM3; 100m on OM4 with host FEC |
Fiber type | OM3 or OM4 multimode fiber |
Connector | MPO parallel interface |
Wavelength / optical design | 850nm VCSEL |
DDM / DOM | Supported |
Operating temperature | 0°C to 70°C |
Power consumption | Below 2.5W |
- Typical 100G SR4 deployment scenarios
Use these as starting points, then confirm the host port, MPO polarity and fiber grade.
- 100G switch-to-switch link
Parallel multimode connection between two 100G QSFP28 ports.

Check before order: host model, coding, FEC, MPO polarity and fiber grade.
- 100G switch to high-speed server NIC
100G SR4 link from a leaf switch to a server NIC or short-reach aggregation interface.

- Quality Coordination
Axonode coordinates product selection, coding and quality requirements with vetted OEM manufacturing and testing partners according to the target project.

- Pre-shipment Verification
Available verification scope is confirmed according to the product, quantity, host platform and project requirements before shipment.

Testing and validation are coordinated according to the agreed project requirements.
Nearby 100G options to compare before ordering
The speed may be the same, but the fiber design, reach, and deployment trade-offs are not.
100G option | Typical Reach | Fiber/connector | Best Fit | Checking before ordering |
|---|---|---|---|---|
100GBASE-SR4 | 100 m | OM4 MMF/MPO-12(OM3 70M) | Short-reach data center links | Fiber type, MPO polarity and switch compatibility |
100GBASE-LR4 | | OS2 SMF / duplex LC | Standard duplex single-mode links | Host coding, link budget, and fiber route |
100G CWDM4 | 2 km | SMF / duplex LC | Shorter-reach data center or campus links | Reach limit and interoperability expectation |
100G PSM4 | 500 m | Parallel SMF / MPO | Parallel-fiber links with existing MPO plant | Fiber plant and connector availability |
100G ER4 | | OS2 SMF / duplex LC | Longer metro or remote links | Optical budget, dispersion, and cost |
100G ZR4 | 80 km | OS2 SMF/duplex LC | Long-distance transport networks | Optical budget, dispersion and amplification requirements |
Frequently Asked Questions
What fiber is required for 100GBASE-SR4?
Use parallel OM3 or OM4 multimode fiber with the correct MPO connector and polarity.
Can the 100G SR4 module be coded for Cisco or other platforms?
Coding can be prepared after the exact host platform and software version are reviewed.
Compatibility is not inferred from the QSFP28 form factor alone.
Does a 100m SR4 link require FEC?
Host FEC is required for the verified maximum-distance application.
Can 100GBASE-SR4 use a duplex LC patch cord?
No. 100GBASE-SR4 uses a parallel MPO multimode interface; a duplex LC patch cord is not the correct fiber connection for this module.
What should I check if the SR4 link does not come up?
Check the host configuration and FEC setting, verify MPO polarity, inspect and clean all connectors, and confirm that the OM3 or OM4 route is within the supported reach.


