I have melted SMD pads on prototype designs when powered. This did not necessarily damage the substrate, although I do not trust the part not to fall off the pad at some point. ______________________________ Reply Separator _________________________________ Subject: Max op temp Author: [log in to unmask] at internet Date: 9/4/96 3:50 PM Questions from a telecomms designer: What is the max continuous operating temperature for a COMPONENT on a vertically orientated PCB (without thermal management) without causing "damage" to the substrate? Has anyone derived a time/temp situation in reflow that would result in significant degregation of the PCB such that personnel might be affected by toxic fumes? Thanks, George Wheadon *************************************************************************** * 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. * *************************************************************************** *************************************************************************** * 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. * ***************************************************************************