Mellanox MFM1T02A-SR Compatible 10GBASE-SR SFP+

Mellanox MFM1T02A-SR is a 10GBASE-SR SFP+ built for Mellanox ConnectX-3 EN and ConnectX-4 EN dual-port 10GbE NICs and for Mellanox SwitchX-2 SN and SX leaf switches running MLNX-OS. It is an Ethernet short-reach optic per IEEE 802.3ae Clause 52, using an 850 nm VCSEL transmitter and an 850 nm PIN receiver at 10.3125 Gbps line rate over duplex LC multimode fiber, with no lane aggregation and no FEC required at this reach. The standard 6.1 dB link budget covers 300 m on OM3 and up to 400 m on OM4, which matches the typical data-center leaf-to-server span and avoids the fiber-plant overhead of an LRM or LR optic on OM3. The module supports SFF-8472 DDM/DOM for live TX power, RX power, laser bias current, voltage and temperature readouts through the I2C two-wire interface, and exposes them through ethtool -m on ConnectX drivers. Mellanox was acquired by NVIDIA in 2020, and this part remains listed as the legacy Mellanox/NVIDIA SR SFP+ for ConnectX-3/4 EN platforms that shipped with the original MFM1T02A-SR vendor-ID.

EdgeOptic programs the EEPROM with Mellanox vendor identifiers so ConnectX-3/4 EN driver stacks and MLNX-OS on SwitchX-2 register the module as a native MFM1T02A-SR without third-party-optic warnings. This SKU is scoped to the 10G-only Ethernet line and is not an InfiniBand optic; ConnectX-5/6/7 HDR/EDR IB ports use different 25G/100G QSFP parts and are out of scope for this SR SFP+. Operating range is 0 to 70 degrees Celsius, the module complies with SFP+ MSA SFF-8431/8432 and is CE/RoHS certified. On the switch side, Mellanox Onyx (formerly MLNX-OS) and Cumulus Linux both read the Mellanox-coded DDM page without extra configuration, so the optic drops into existing fleet monitoring under the standard transceiver diagnostic paths. MLAG pair integrity and LAG member parity are unaffected by the compatible module since the optical and electrical layers match the factory part.

For volume ConnectX-3 EN or SwitchX-2 rollouts, alternate NVIDIA-branded coding variants, or qualification against a specific MLNX-OS build, contact our sales team with the target NIC or switch firmware release.