scary! jk >-----Original Message----- >From: TechNet [mailto:[log in to unmask]]On Behalf Of David Douthit >Sent: Tuesday, July 16, 2002 6:47 PM >To: [log in to unmask] >Subject: Re: [TN] Moisture Sensitive Device Levels - A Reliability >Indicator ? > > >Paul, > >The following is the DoDs position on 217F: > >I received this e-mail and I am glad to see that someone is working a >replacement for Mil Hdbk 217. As you may know, the DSIC made a decision >several years ago to let Mil Hdbk 217 "die a natural death". This is still >the current OSD position i.e. we will not support any updates/revisions to >Mil Hdbk 217. > >George Desiderio, Deputy Director >Systems Engineering >OUSD(AT&L)/Interoperability >Tel: 703/695-2300 >Fax: 703/614-9884 >Cell: 703/582-7644 >eMail: [log in to unmask] > >David A. Douthit >Manager >LoCan LLC > > >Paul Signorelli wrote: > >> i have a question about the new families of MSD components we >have recently been seeing. >> There is now a new group of components being rated as Moisture >Sensitive Devices, that are not IC's. e.g.: LED's, Capacitors, etc.... >> >> Is the MSD level now becoming a Quality Level indicating the >Quality or Reliability of the part instead of the vapor >transmissiblity of the package to prevent the 'Popcorning' problem ? >> Should i purchase a level 2 (non-IC) part from one mfgr, rather >than a level 3 (non-IC) part from another because it has >successfully passed the Level 2 MSD qualification tests ? >> Are some (non-IC) manufacturers using the MSD Rating system to >hide quality defects or inadequate high temperature construction >materials ? >> i would suggest that anyone having component failures of these >new MS devices >> perform detailed component failure analysis to see if there is a >MS vapor transmission (popcorn) failure or some other high >temperature failure mechanism (like reversion, epoxy degradation, >or CTE problems). >> >> This all could result in a new revision of MIL-HDBK-217 to add >'Pi sub MSD' factors. >> >> Paul Signorelli >> Sanmina-SCI >> >> >------------------------------------------------------------------- >-------------- >> Technet Mail List provided as a free service by IPC using LISTSERV 1.8e >> 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/html/forum.htm for additional > information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 > -------------------------------------------------------------------------- ------- ---------------------------------------------------------------------------- ----- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------- ----- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------