Product Overview
The QSFP-40G-eSR4 belongs to Huawei’s 40G series and implements 41.25 Gbit/s 40GBASE-SR4 transmission as four parallel 10G lanes over 850 nm multimode fiber, using an MPO-12 connector in the QSFP+ footprint. Huawei documents reaches of 400 m on OM4, 300 m on OM3 and 82 m on OM2, an extended-reach profile versus the 100 m/150 m of standard 40G SR4 modules.
Because all four lanes ride the same parallel ribbon, existing OM3/OM4 trunk cabling can be reused for 40G without new installs up to these distances. The module is specified for a 0°C to +70°C operating case temperature for standard data-hall environments.
Typical applications include 40G spine-leaf and core interconnects inside the data center, 40G uplinks from 10G aggregation layers, and links to legacy 40G server or storage arrays over installed OM3/OM4 ribbon fiber.
- 40GBASE-SR4 41.25 Gbit/s (4×10.3125 Gbit/s lanes) over 850 nm MMF
- Extended reach: OM4 400 m / OM3 300 m / OM2 82 m per Huawei official table
- MPO connector, hot-pluggable QSFP+ footprint
- 0°C to +70°C commercial case temperature range
- Reuses installed OM3/OM4 ribbon cabling for 40G upgrades
| Rate | 41.25 Gbit/s (40GBASE-SR4, 4×10.3125 Gbit/s) |
| Interface | QSFP+, MPO |
| Wavelength | 850 nm |
| Reach | OM4 400 m; OM3 300 m; OM2 82 m |
| Fiber | MMF (OM2-OM4) |
| Operating Temperature | 0°C to +70°C (case) |
| Compatibility | Huawei QSFP+ slots, 40GBASE-SR4 (IEEE 802.3bm) |
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