Boy, your customer sure does not what he is doing. Performing tests at 70C/95%RH almost guarantees condensed water on your test boards-- white stains is what is left after the water dries off. Even the Bellcore requirements are a problem and were created by some hand waving arguments--they come from some old Bell Labs experiments, where the test data never could be quantitatively correlated with actual product behavior and let to the hypothesis of a threshold condition for CAF. That goes even more for your test conditions which are sure to create extraneous mechanisms, not just liquid water on your boards.----But I guess the customer is always right. Werner Engelmaier Engelmaier Associates, Inc. Electronic Packaging, Interconnection and Reliability Consulting 23 Gunther Street Mendham, NJ 07945 USA Phone & Fax: 201-543-2747 E-mail: [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************