Hi Doug - I have seen a similar problem using "super glues" in very electrically sensitive applications. I was gluing a sensor on a solder squeegee blade and conducting AC Impedance tests but the glue caused wide swings in the measured data depending on how "sloppy" I was with the gluing process. My adhesive guru's said that the cyanoacrylate type adhesives (which many of the super glues fall into) would be a concern in an electrically sensitive application. I changed to another attachment method and the problems went away. Dave Hillman Rockwell Collins [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: Glue and Fine Pitch Devices Author: [log in to unmask] at ccmgw1 Date: 8/26/96 9:04 AM We are currently having our board assembly house use a quick drying glue to secure a 30AWG wire to the pcb for a modification. We are finding the glue can cause electrical problems (not all the time) if it is in the leads of FINE PITCH surface mount devices. This is confirmed when the glue is removed. There is the telltale white residue on the glue indicating the glue is applied first and the accelerater applied second. Something I've done myself. It's my understanding that the accelerator should applied first and the glue second. There are no controlled impedence issues and comparativley low frequency of 1 to 32 MHz digital signals. 1. Has anyone had electrical problems with glue in the leads of fine pitch devices? 2. Can the glue be conductive for at least fine pitch devices? I've seen this glue used tons of times without this effect. Thanks in advance. Doug -- ******************************************************* Doug McKean [log in to unmask] ------------------------------------------------------- The comments and opinions stated herein are mine alone, and do not reflect those of my employer. ------------------------------------------------------- ******************************************************* *************************************************************************** * 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. * ***************************************************************************