Hi Technos, badly need your wisdom on this. We have an automotive application, a simple assembly (single sided reflow + wave soldering) that needs conformal coating. We are on no-clean CP36 paste from Multicore and X33 no-clean flux from the same company. After having browsed last night through the archives, I still have a lot of questions: 1. what reliability concerns should I have with automotive applications 2. any special coating material more suited for automotive 3. except for the dendritic growth, any other hazard 4. the Nortel analysis bulletins for both materials show the residues are inert. should I worry about the flux residues or not? Can the assembly process make them less inert? 5. if the flux residues are inert, what could screw up the ionic tests? 6. what cleanliness tests to do and when in the process 7. if fails the test, how to clean 8. how to spec the thickness of coating, how to check it? 9. what to expect from a good coating house 10. what is a good test to do for qualification of the sub-contractor. Since it's the only one in town, how to make him do better? 11. except Concoat and Humiseal, any other major players in the fiels? Thank you SIRs and any other contributor, Ioan --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------