Our 400G Optical Transceiver family covers multiple form factors and technologies: QSFP-DD (DR4/FR4/LR4), OSFP (DR4/FR4), and the newer QSFP112 series. This article focuses on the 400G QSFP112 SR4 – a compact, low‑power module built for short‑reach 400G links. For other models (e.g., DR4 or FR4), please browse our website or contact our sales team.

Key Specifications

IEEE 802.3db 400GBASE-SR4 Specification compliant
Compliant to QSFP112 MSA V2.0
Compliant with CMIS 5.0
4x106.25 Gbps PAM4 optical interface
4x106.25 Gbps PAM4 electrical interface (400GAUI-4)
I2C interface with integrated DDM
Up to 60m/100m transmission distance with OM3/OM4 MMF
Supply voltage: 3.3 V
Maximum power consumption: 9 W
MTP/MPO-12 connector
Operating case temperature: 0 to 70 °C
RoHS 2.0 compliant

Why Choose QSFP112 SR4?

The QSFP112 form factor offers a lower power and lower latency alternative to older QSFP-DD designs for short‑reach 400G. Its 4‑lane parallel optics (MPO‑12) matches the cabling infrastructure used by 100G SR4, making it a natural upgrade path. With 9W max power, it runs cooler than many 400G modules, simplifying thermal management in dense switches.

Whether you are scaling an AI fabric or consolidating 100G links into a 400G backbone, this 400G Optical Transceiver delivers reliable, cost‑effective performance. For longer reaches (500m or 2km), explore our DR4/FR4 options – another part of our 400G Optical Transceiver lineup. Contact our team for samples or compatibility checks.

FAQ

Q1: Does this module support break‑out to four 100G ports?

A1: Yes. Using an MPO‑12 to 4x LC duplex breakout cable, you can connect one 400G SR4 port to four 100G QSFP28 SR4 ports. This is common when upgrading a switch to 400G while still serving legacy 100G servers or switches.

Q2: How do I store spare modules?

A2: Keep them in original anti‑static packaging with dust caps on the MPO port. Store in a clean, dry environment at room temperature (10°C to 30°C). Avoid direct sunlight, vibration, or corrosive gases.

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