Electronics Forum | Thu Apr 02 11:12:34 EST 1998 | Justin Medernach
| Looking for Cleaning solvent to claen missprinted PCB, that will be good for paste (CS) and glue (PS). | One that is easy to evaporate with out leaving | white powder around component leads on CS (when cleaning PS) Ron, If you are running a no-cle
Electronics Forum | Wed Apr 01 11:08:03 EST 1998 | Bill Schreiber
Smart Sonic's 440-R SMT Detergent cleans all types of solder paste, wet SMD adhesives and post solder flux residue from misprinted PCBs, stencils and tooling. 440-R SMT Detergent is non hazardous and is certified by the Air Quality Management Distri
Electronics Forum | Fri Mar 06 10:43:32 EST 1998 | Alan Pestell
We have a double sided pcb that is surface mount on both sides. Now a Through Hole connector has been added. Appart from hand soldering does anyone have info. on reflow soldering the part. The connector is 0.1mm pitch, square legs. 1) Do you need to
Electronics Forum | Wed Oct 10 21:31:17 EDT 2001 | cnoonan
I used to rework many types of BGA's including ceramic. We always preheated the whole board to around 115 c before attempting to remove or place. Now I find myself in a new company with different ideas. Do any of you have a site that has exact rec
Electronics Forum | Mon Dec 08 16:10:02 EST 1997 | Donnacha Nagle
Q1. As part of a Final Year Thesis I am currently undergoing an in-deph study of the Screenprinting process for MPM 3000 Screenprinters. Ultimately I will be setting up control charts on line. Does anybody have suggestions in this area ?, I have alot
Electronics Forum | Thu Aug 16 10:49:35 EDT 2001 | JohnW
Dave, we try and keep the temperture that a BGA is exposed to at wave solder below 150 deg C. At this temperature it's unlikely that you'll get near to starting secondary reflow of the device or that you'll grow any significant amount of intermetall
Electronics Forum | Tue Sep 18 13:21:06 EDT 2001 | fcouture
Hello Jeff, I found some good information from what I read until now...so thank you! I have two questions: 1) What finish did you use on the PCB for 0201 ? I think with an aperture so small (12x15mils) tin plated is impossible, what do you think
Electronics Forum | Wed Oct 10 21:35:39 EDT 2001 | cnoonan
I used to rework many types of BGA's including ceramic. We always preheated the whole board to around 115 c before attempting to remove or place. Now I find myself in a new company with different ideas. Do any of you have a site that has exact recomm
Electronics Forum | Tue Nov 27 12:18:08 EST 2001 | Justin
We are currently looking for a way to measure pcb stress during our assembly process. We would like to get an idea of what amount of stress (flex) the boards are undergoing. We would also like to use this to compare a few different processes--for e
Electronics Forum | Wed Jan 02 13:31:55 EST 2002 | PeteC
The rule-of-thumb is to follow the flux mfg.'s recommended profile to achieve their specified top side PCB temperature before making contact with the wave. Typical top side PCB temps are 100-120deg.C. Your wave contact time should be around 2 seconds
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