Dear Technetters, We've just finished our first few boards with Humiseal 1B31 conformal coating, applied with a selective spraycoating machine, and we asked the customer to inspect the products. He commented that some areas on top of the IC's were not covered completely, which is required (so he says) because these are plastic components which may absorb moisture if left uncovered. I'm not gonne argue about this with the customer, but still I'm interested to hear from you wether the fact that the IC's are plastic is indeed a reason to require them to be completely covered with coating. As far as my knowledge goes the problem with plastic IC's and moisture is limited to the soldering process only, but I may be wrong..... Anyone can comment ? Daan Terstegge Unclassified mail Personal Website: http://www.smtinfo.net --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------