Thanks Brian, Our bridges too, especially the Golden Gate, provides "permanent" job security for strippers and painters as well - willing to work at such lofty heights, in poor environmental conditions, for so long. You've given me exactly the answer I was seeking. Bridges are quite another matter from devices or product that can be environmentally "shielded" to some extent. My pacemaker (don't really have one yet) is such an example but the situation is better exemplified by military hardware, or Class 3 product, having to meet a less critical, at times, situations. I'm just suggesting that if we know a cause of something, we might do more to prevent its occurrence. If we better protect a product, until it is required for use as an assembly for flight operations, as an example, by better "sealing" it before it is integrated into a "sealed" system, shouldn't we expect better life performance without serious, life threatening possibilities as when a PCB glass fillament shorts because of a moisture, or whatever, problem? I'm just trying to establish that if CAF, for example, testing has revealed it really exists, and it it's obvious it does, we should be able to prevent it's negative consequences. If we bake, heat, solder, dry, dessicate, seal, conformally coat, and keep dry, by whatever means, haven't we solved an issue before it becomes a serious problem? By normal course of fabrication and assembly, we do all these things as a "natural" matter of fact. I believe we have discovered a major impediment to reliability and human safety. However, it just seems to simple to prevent it from being a problem over the life of a product. Thanks again for your response and thanks for continuing to be, Earl --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------