I would say the best guidance for this could be found in the IPC documents for ESD and/or Moisture Sensitive Devices. Rich Kraszewski Senior Staff Process Engineer Plexus Engineering Solutions * * * * * * * * CONFIDENTIALITY NOTICE * * * * * * * * This e-mail and any attachments are confidential from Plexus Corp. and may contain information which is privileged, confidential, and/or protected by non-disclosure agreements. They are intended solely for the use of the named addressee(s). . Any unauthorized use or disclosure may be unlawful. If you are not a named addressee, you must not use, disclose, retain or reproduce all or any part of the information contained in this e-mail or any attachments If you have received this transmission in error, please destroy it and notify us immediately by return e-mail or by calling + 1 888 208 9005. -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Lyon Yuan Sent: Wednesday, June 14, 2017 9:26 PM To: [log in to unmask] Subject: [TN] Temp and relative humidity Dear All, May I know which IPC define temp and relative humidity for General electrical workshop? Lyon 发自网易邮箱大师