What does accelerated testing mean in terms of time ? Take for example 16h at 155oC for Solderability it is accepted to = 1 year The IPC SM 785 Table one provides temperature cycling conditions but does it provide an indication on the equivalent in days and years. What do the following tests relate to in days, years etc. 7 days 85%RH 85oC = ? 21 days 85%RH 85oC = ? 21 days 40oC 95%RH = ? Temperature cycling -55 to 125oC = ? A listing of the suggested test conditions and what they are considered to equate too will be mailed to the IPC forum. Bob Willis Process Engineering Consultant Electronic Presentation Services 2 Fourth Avenue, Chelmsford, Essex CM1 4HA. England. Tel: (44) 01245 351502 Fax: (44) 01245 496123 Home Page: http://ourworld.compuserve.com/homepages/Bwillis Email: [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] * ***************************************************************************