200G Optical Transceiver
Our 200G optical transceiver family includes four QSFP56 modules: SR4, DR4, FR4, and LR4, covering distances from 100m to 10km. This article focuses on the 200G QSFP56 SR4 – the short‑reach multimode solution. For details on the DR4, FR4, or LR4 variants, please browse our website or contact our sales team.
The 200G QSFP56 SR4 is purpose‑built for high‑density 200G Ethernet links inside data centers. It complies with 200G‑SR4 optical specifications and uses a 4×53.125Gb/s electrical interface (200GAUI‑4). On the optical side, it transmits over four parallel multimode lanes through a single MPO‑12 connector.
Reach depends on fiber type: 70 meters on OM3 and 100 meters on OM4 – typical for rack‑to‑row or leaf‑spine connections. The module operates from a single +3.3V supply with maximum power consumption of just 4W, which helps keep thermal budgets low even in dense switch deployments. Case temperature range is 0°C to 70°C, and the module is fully RoHS compliant.
Typical applications include 200GBASE‑SR4 Ethernet links and general data center networking. The SR4 is a popular choice when you already have installed OM3/OM4 cabling with MPO‑12 infrastructure. It is hot‑pluggable, supports digital diagnostics via I²C (SFF‑8636 compliant), and offers a straightforward migration path from 100G SR4.
Whether you are upgrading a top‑of‑rack switch or expanding a high‑performance computing cluster, this 200G optical Ttransceiver delivers reliable, low‑power performance. For longer reaches – 500m (DR4), 2km (FR4), or 10km (LR4) – please explore the rest of the 200G Optical Transceiver family on our website.
FAQ
Q: There are four 200G modules – SR4, DR4, FR4, LR4. How do I pick the right one?
A: Start with two things: your fiber type and distance.
SR4 → multim fiber (OM3/OM4), up to 100m, MPO‑12.
DR4 → single‑mode fiber, 500m, MPO‑12.
FR4 → single‑mode fiber, 2km, duplex LC.
LR4 → single‑mode fiber, 10km, duplex LC.
If you have existing LC cabling and need 2km or more, skip DR4 and go FR4/LR4. If you have MPO‑12 multimode, SR4 is your only choice.
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