I refer much to MIL-PRF-38535F and MIL-M-38510, even if both are not very in line with today's products. /Inge ----- Original Message ----- From: "Steven Creswick" <[log in to unmask]> To: <[log in to unmask]> Sent: Wednesday, August 05, 2009 3:19 PM Subject: Re: [TN] die base chip outs / fractures > Victor, > > I am not sure what the IPC equivalent to MIL-STD-883 would be, but if you > refer to 883, TM 2010 - internal visual - monolithic, or TM 2017 internal > visual - hybrid you may find what you are looking for. > > My recollection is that TM 2010 may provide the most info [para 3.1.3] > although we were mostly concerned about chip-outs at the upper edge of the > chip, nearer to the active region. You might consider the section on flip > chips for info as well. > > If the chips are diced with a diamond saw, one seldom [if ever] sees > chipping along the bottom edge of the die unless there has been > mis-handling > of the sawn wafer while still on the frame. Mainly, don't want cracks > going > in the direction of the active region of the chip - [personally, don't > want > to see cracks AT ALL - especially, if you can see them with a low-power > scope, etc]. > > We would not want to see loose bits of Si rattling around inside a sealed > hybrid. If over-molded, it is not so likely to move anywhere... > > Interested in further detail of the chipping you are seeing. > > You should be able to down-load MIL-STD-883G from > http://assist.daps.dla.mil/online/start/ > Once you get the user sign-on info. It is a ~6 Mb file > > Steve > > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez > Sent: Wednesday, August 05, 2009 8:16 AM > To: [log in to unmask] > Subject: [TN] die base chip outs / fractures > > Fellow TechNetters: > > Is there an IPC documents pertaining to acceptance of anomalies with > die. I am see small cracks/chip out at the die to die attach region. > How much chip out/ crack is allowed? > > Victor, > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to > [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 > for additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 15.0 > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to > [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 > for additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------