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 ---------------------------------------------------------------------------------