Dell - Internal Use - Confidential Was the photo uploaded to Steve Geogory. I was not able to open the drive google url link. Curious to the photo of IPsep. Victor, -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David Hillman Sent: Thursday, April 19, 2018 6:57 AM To: [log in to unmask] Subject: Re: [TN] R: [TN] R: [TN] PCB failure Hi Gil - if you have the resources, you should put that cross section in the SEM and look for possible resin smear on the inner layer/PTH interface. Resin smear could cause the defect you are seeing. Dave Hillman Rockwell Collins [log in to unmask] On Thu, Apr 19, 2018 at 4:02 AM, Zilber Gil <[log in to unmask]> wrote: > Thanks > It is a leaded hand soldering of that device. I will check if the > other failed location has hand soldering also. The material is a high > tg material (Isola 370 HR). > Regards, > Gil > > > > נשלח מסמארטפון ה-Samsung Galaxy שלי. > > > -------- הודעה מקורית -------- > מאת: SALA GABRIELE <[log in to unmask]> > תאריך: 19.4.2018 10:46 (GMT+01:00) > אל: 'TechNet E-Mail Forum' <[log in to unmask]>, Zilber Gil < > [log in to unmask]> > נושא: R: [TN] R: [TN] PCB failure > > Gil, > > you could show the picture to TNetters by mailing it to Steve Gregory > [log in to unmask] whom very kindly support us when we need to attach > picture (many thank Steve for you service) so all the TNetters will > see the picture. > > I have seen your picture, yes it is a IPS (Inner Plane Separation) > from PTH. > It may be due to thermal stress in Z assy, but why ? > You made baking to PCB so it should not be a matter of internal over > pressure due to moisture blow-off. > > Or may be too low Tg of laminate or high CTE in Z assy ? > Are you running Lead Free Reflow ? > > Etc... > Gabriele > > > -----Messaggio originale----- > Da: TechNet [mailto:[log in to unmask]] Per conto di Zilber Gil > Inviato: giovedì 19 aprile 2018 10:27 > A: [log in to unmask] > Oggetto: Re: [TN] R: [TN] PCB failure > > Thanks Gariele, > The PCB is new, and it was baked before assembly. > Thanks, > Gil > > > > נשלח מסמארטפון ה-Samsung Galaxy שלי. > > > -------- הודעה מקורית -------- > מאת: SALA GABRIELE <[log in to unmask]> > תאריך: 19.4.2018 10:07 (GMT+01:00) > אל: [log in to unmask] > נושא: [TN] R: [TN] PCB failure > > Hi Gil, > > did you handled correctly PCB against moisture absorption ? Like guide > lines of IPC-1601A ? > Shelf life of your PCB ? > Any Baking before reflow? > > Gabriele > > PS: no picture is attached > > -----Messaggio originale----- > Da: TechNet [mailto:[log in to unmask]] Per conto di Gil ZIlber > Inviato: giovedì 19 aprile 2018 09:27 > A: [log in to unmask] > Oggetto: [TN] PCB failure > > Hello Tech, > We encounter a PCB discontinuing. Cross section shows conductor > separation from TH. > The PCB manufacturer claims it is due to overheating during assembly. > To me, it looks like bad PCB manufacturing. > Please look at the picture and give me your feedback. > Thank you > > > --- > Questa e-mail è stata controllata per individuare virus con Avast > antivirus. > https://www.avast.com/antivirus > The information contained in this communication is proprietary to > Israel Aerospace Industries Ltd. and/or third parties, may contain > confidential or privileged information, and is intended only for the > use of the intended addressee thereof. If you are not the intended > addressee, please be aware that any use, disclosure, distribution > and/or copying of this communication is strictly prohibited. If you > receive this communication in error, please notify the sender immediately and delete it from your computer. > > > The information contained in this communication is proprietary to > Israel Aerospace Industries Ltd. and/or third parties, may contain > confidential or privileged information, and is intended only for the > use of the intended addressee thereof. If you are not the intended > addressee, please be aware that any use, disclosure, distribution > and/or copying of this communication is strictly prohibited. If you > receive this communication in error, please notify the sender immediately and delete it from your computer. > >