The SFP28 (25Gb/s on a single lane) shares the same form factor (MSA) as the SFP and SFP+. it has been evolved from the QSFP28, which uses 4 lanes. SFP28 is also used when breaking out a QSFP28 into 4 x 25Gb/s individual connections.
SFP28 is available with both fiber and copper connections.
Small Form-factor Pluggable 28
|SR||PSFP28-3831MF||MM||850 nm||100 m||LC||Yes|
|LR||PSFP28-2321SF||SM||1310 nm||10 km||LC||Yes|
|ER||PSFP28-1541SF||SM||1550 nm||40 km||LC||Yes|
|DAC/Twinax (passive)||PSFP28-Tx||Copper||x = variable||SFP28 to SFP28||No|
|DAC (active)||PSFP28-AOCx||Fiber||x = variable||SFP28 to SFP28||No|
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