**Part Number:**DP83867E

There are 5 key parameters to look out for when selecting magnetics:

- Magnetic type (specifically for integrated RJ-45/Magnetic component)

- Can the recommended MDI configuration still be met with this component?

- Turns ratio
- Ideally 2%, but 3% is tolerable

- Inductance
- High inductance is preferred. Usual numbers seen is around 350uH

- Insertion loss
- As close to 0dB as possible compared to specified value for each range stated in datasheet
- If specification gives -1dB as typical, finding a component with -1dB, -0.9dB,... is recommended

- As close to 0dB as possible compared to specified value for each range stated in datasheet
- Return loss
- At or smaller magnitude than specified in datasheet
- If specification gives -16dB as typical, finding a component with -16dB, -17dB,... is recommended

- At or smaller magnitude than specified in datasheet

While this can give a helpful indication of compatible magnetics, **it is strongly recommended that customers validate the magnetic in their design with their PHY**.