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MelodyCC's avatar
MelodyCC
Icon for New Contributor rankNew Contributor
2 years ago

Difference of X-ray internal structure -#EPM3064ATC44-10N

We bought some parts and issued the X-ray test on them.Result shows different internal structure at the left corner of the pics.Does anyone know the reason for this difference? Attahced is the diffe...
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Programmable Logic Device
_AK6DN_'s avatar
_AK6DN_
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Are the package markings all the same? Lot ID, date codes, etc?

Were the parts sourced from authorized vendors, or bought from random resellers?

The silicon die pad placements look identical as best as I can tell in a cursory visual inspection.

The lead frames appear slightly different.

What do you think the differences are?