What would the Die Marking be for this part: EP5388QI What is this I marked in "red" by Xray? Please help me validate.

Hello Brandom,

The internal inductor looks like a bead and the die is stacked over it and inside the inductor package it is expected that the start and end points will rotated based on the inductor orientation.

So during the device assembly there are 4 expected positions for that Inductor to be mounted depending on its orientation and we don't control that orientation, only we mount the bead from its metal terminal.

So it is expected that when you do the x-ray to have 1 of 4 expected different images for the inductor winding from device to the other.

Regarding the die marking; it is the same for all EP5388QI devices.

Regards,

Mostafa