good eyes. On Apr 19, 2018, at 9:45 AM, Fox, Ian wrote: > If I'm seeing this correctly, isn't there a crack in the laminate > at the hole entrance, or is it staining? Also, is that the > contact side for the soldering iron? > > -----Original Message----- > From: TechNet <[log in to unmask]> On Behalf Of Stadem, Richard D > Sent: 19 April 2018 14:37 > To: [log in to unmask] > Subject: Re: [TN] R: [TN] R: [TN] PCB failure > > Initially, this does NOT appear to be from Z-axis expansion, but > rather resin recession. However, that could have been caused by > overheating during soldering or rework also. > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory > Sent: Thursday, April 19, 2018 8:32 AM > To: [log in to unmask] > Subject: Re: [TN] R: [TN] R: [TN] PCB failure > > Hi Gil, > > Just got into work and I have your image posted: > > http://stevezeva.homestead.com/ > SmartSelect_20180419-091742_Gaaiho_PDF.jpg > > Steve > > On Thu, Apr 19, 2018 at 6:29 AM, Zilber Gil <[log in to unmask]> > wrote: > >> I sent it to Steve. >> I am also attaching it to this mail, so you can look at it. >> Thanks, >> Gil >> >> >> >> נשלח מסמארטפון ה-Samsung Galaxy שלי. >> >> >> -------- הודעה מקורית -------- >> מאת: [log in to unmask] >> תאריך: 19.4.2018 14:24 (GMT+01:00) >> אל: [log in to unmask] >> נושא: Re: [TN] R: [TN] R: [TN] PCB failure >> >> 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. >>> >>> >> 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. 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