LMZ14201: Request FA for Order number：T02156486 MPN: LMZ14201TZX-ADJ/NOPB 1500pcs

Auttawoot Prommas

Part Number: LMZ14201

Order Number：T02156486 MPN: LMZ14201TZX-ADJ/NOPB QTY 1500pcs DC:2138*1+2140*2 Order Time：28/12/2021

We found that there is failure on ICT test on MPN: LMZ14201TZX-ADJ/NOPB. Kindly help to provide the RMA# to send 3pcs failure part for FA. Below is the detail.

Failure: VCC power Test failed for 3v3.
D/C: 2138
Reject rate : 17/31 board fail (54.8%) failure

3 年多前

0 Johnsin Tao 3 年多前

TI__Guru**** 308311 points

能够给出更详细的信息：哪个脚阻抗异常（正常是多少？异常是多少？）有没有确认ICT的ESD?

其次你们芯片哪里买的？直接购买自TI, 还是代理商？

0 Auttawoot Prommas 3 年多前

buy from TI online order # T02156486

0 Johnsin Tao 3 年多前回复 Auttawoot Prommas

TI__Guru**** 308311 points

这些信息有吗？

能够给出更详细的信息：哪个脚阻抗异常（正常是多少？异常是多少？）有没有确认ICT的ESD?

0 Auttawoot Prommas 3 年多前

Dear , we would like to provide more analysis report as attached file .

0 Auttawoot Prommas 3 年多前

We have do cross section analysis and found problem as pictures, could you advise ?

We have some questions below

Questons

1.These are cross section images at the Si die which showcase the preliminary findings on bad versus good components , pls help to review and do have suggestion on cross sectio report

2. Another concern we having here are which we found the failure unit look like the part is not filled up with mold compound , is the part is fully moulded or not f

ully moulded . I believe that if the molding been full covered , the solder will unable to flow and short the dies pad .