More questions on Plastic Parts: IPC-SM-786A is a great document. Covers most of the bases quite well. But here is my question: Section 4.3.2.1 states that shipping tubes or tape and reels may be placed in an oven at 40 C (+5/ -0C) for 192 hours at <5% RH. The time required to desorb moisture down to the target level can vary from one week to a month. QUESTIONS: 1) How do you keep the humidity in the oven down to less than 5% RH? 2) It states that the time required may be 1 week to a month, but the same paragraph seem to say that if baked for 192 hours, the parts will have the same life as if baked at 125 C... So is more than a week of baking required, or not? 3) Will the supplier indicate the proper low temperature bake parameters (temp, RH, time) on his packaging? Thanks, Mike [log in to unmask] ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311 ##############################################################