Electronics Forum | Thu Dec 11 04:25:06 EST 2008 | lconnor
I have previously experienced dispensing glue dots using a camalot system. This was used to dispense dots for a variety of components, as the SMT was applied post through hole and then wave soldered. No paste was used in the process. The other benefi
Electronics Forum | Fri Jan 22 14:31:14 EST 1999 | Dave F
| I have boards coated with Humiseal 1B73. At a late point mfg. site we need to remove a series of 0603 resistors for optioning purposes. I have been trying to determine the fastest, easiest way to re-coat the pads after removal. Drying time of the c
Electronics Forum | Mon Aug 22 11:54:59 EDT 2011 | blnorman
A good epoxy should work. Removal would require damaging the board, component, what ever it is attached to. I know Hardman makes a bi-pack ambient cure epoxy that we used in the lab. Search the web for epoxy suppliers, they'll offer various cure s
Electronics Forum | Tue Apr 09 16:31:49 EDT 2013 | alfredodsanchez
Hello everyone! I have a problem with PCB, we detect that some contamiation apear (dark spots similar to glue or underfill) we detect that this element is Policarbonate. I don't know if on PCB fabrication process some policarbonate are used. We alr
Electronics Forum | Wed Oct 21 14:28:17 EDT 1998 | Earl Moon
| I'M LOOKING FOR A SOLVENT TO MAKE REMOVING EPOXY FROM THE BOTTOMSIDE OF BOARD ON SMT COMPONENTS. THIS IS MOST IMPORTANT AFTER THE EPOXY HAS CURED AND EVEN RAN THROUGH THE WAVE. I'M LOOKING FOR A WAY OF | MAKING THE REWORK PROCESS ON THE CURED EPOX
Electronics Forum | Thu Sep 11 15:23:31 EDT 2003 | Peter L.
I have come across a rash of failed assemblies that have 0805 capacitors and resistors, bottom side glued, wave soldered and washed. Trouble shooter reported touching up the solder joints on a few areas and the boards would pass test. I had a look a
Electronics Forum | Mon Jul 26 14:14:51 EDT 1999 | Steve Gregory
| | | We are having a process related problem with pullup resistors on a controller card which has a I960 micro-processor. | | | The controller monitors signal inputs and it's own resources then blinks a LED to indicate its working. The problem is th
Electronics Forum | Thu Jun 04 11:23:44 EDT 1998 | Frank S
If you could measure and chart 3 variables in my process, what would they be? The boards that I produce are on panels that are 12up and 2x4 up. All boards are single sided paper base w/o plated thru holes. They are on scored panels that measure 7"
Electronics Forum | Thu Jun 04 11:57:59 EDT 1998 | Pete M
Be more specific on your problems? | If you could measure and chart 3 variables in my process, what would they be? | The boards that I produce are on panels that are 12up and 2x4 up. All boards are single sided paper base w/o plated thru holes. The
Electronics Forum | Sun Jun 23 12:24:37 EDT 2002 | stepheno
I worked at a place where a customer complained that the resistance of some components was lowered. It was found to be flux entrapped from the wave solder process. The tube of epoxy, didn't have a date of manufacture, shelf life, or use by date on
