Hi, Jim, I'm intrigued to know how you identify a part as being Moisture Sensitive other than reading it off the Data Sheet from the manufacturer. Are you carrying out a lot of expensive independant testng on a lot of parts? Responsibility for determining the moisture sensitivity of a component, and of ensuring correct labelling/packaging of MSD's lies with the OEM. You should not have to specify for yourself what the packaging standard should be, as you risk conflicting with the OEM's packaging standard. If your distributor is keen to abide by your PO requirements, he may decide to re-pack components to your specification, in which case.you could wind up in trouble if someone gets something wrong like labelling information or packaging type. I have not heard yet of components that were once Moisture Sensitive suddenly losing their sensitivity (unless the package type has changed from plastic to ceramic, for example). Manufacturing process improvements could lead to reduced sensitivity, but sensitivity is basically dependant on the materials used to construct the component, and not on the manufacturing process. If you're being told that "a part is no longer Moisture Sensitive", I would be suspicious that my original information regarding its sensitivity was incorrect. Similarly, if you're getting parts in marked as MSD when you didn't expect them to be, you may have missed something in your design assessment. Some components (new types of capacitor, for example), are starting to come into the "moisture sensitive" categories, much to everyone's surprise, but I can't comment on whether they're new versions of an older, previously-non-sensitive part number, or completely new part numbers. I go back to my original question - how are you determining which components are moisture sensitive in your design assessment? Peter Jim Jenkins <[log in to unmask]> 19/09/2002 02:03 AM Sent by: TechNet <[log in to unmask]> Please respond to "TechNet E-Mail Forum."; Please respond to Jim Jenkins To: [log in to unmask] cc: (bcc: DUNCAN Peter/Asst Prin Engr/ST Aero/ST Group) Subject: [TN] Moisture sensitive parts Hi everybody, Lately we have had a few problems with moisture sensitive part precautions. During the design phase, a part is identified as moisture sensitive. The purchase orders are then modified to include packaging/labeling notices identifying the moisture requirements. Then, when the parts are received, some are properly packaged and labeled and some are not. In all cases when we contact the supplier we are told that the part in question is no longer sensitive [component assembly processes were changed, etc] or we have parts come identified as sensitive which were not when we created the design. So the $1000 QUESTION is, do you try to identify moisture sensitive parts on your design documentation or do you rely on your supplier to properly identify and package sensitive parts and just handle them accordingly when you receive them??? We have had a number of discrepancies, and I was wondering what everyone else does to avoid this kind of thing. As always, thank you in advance for any help you can provide. Have fun, Jim Jenkins --------------------------------------------------------------------------------- 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 --------------------------------------------------------------------------------- [This e-mail is confidential and may also be privileged. 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