Electronics Forum | Sat Nov 05 09:02:23 EST 2005 | grantp
Hi, The oven we had used an air sensor, however we had heat from the metal oven walls IR conducting into the board. Once you run an oven, the metal retains a surprising amount of heat, and that radiates as IR energy out of the walls, and into the pr
Electronics Forum | Tue Nov 08 20:50:03 EST 2005 | davef
First, general comments about voiding in wave soldered connections are: * Causes of voids in solder connection are many: moisture, flux/paste volatiles, wave process, etc. * Impact on reliability of voids in a PTH solder connection is insignificant,
Electronics Forum | Fri Nov 18 07:58:15 EST 2005 | cyber_wolf
Ken, It happens about two or three times a month on my shift. I am sure that it happens on other shifts as well. I have not even bothered sending the status to Mydata. I have a difficult enough time getting answers on things "out of the norm" from B
Electronics Forum | Mon Nov 14 11:57:36 EST 2005 | Carsten
Hi, my name is Carsten from Germany. My company is looking for a pre-owned SMT placement machine to replace our old Dynapert MPS111. We are producing a lot of different PCBs with many different parts on it, and only small series of 100 to 1k pieces.
Electronics Forum | Tue Nov 15 09:31:27 EST 2005 | arclightzero
I have been reading a good deal about IMC (purple plague in particular) in gold wire/aluminum pad wire bonds. My company uses ultrasonic wedge bonding, and for the most part all of our bonding is gold/gold, however we have one particulr part that has
Electronics Forum | Thu Nov 17 17:32:07 EST 2005 | russ
Good point tommy, I think we are confusing what we are talking about here. It was not asked if the operators should do inspection. It was asked if an operator should pass boards through a machine. The operator is not inspecting anything just as t
Electronics Forum | Tue Nov 29 16:30:05 EST 2005 | russ
We have utilized one of these for about 6mos. now (is that right Larry? I know you're reading this.) So far it has proven to be a very good machine. Getting the vision right on chip caps can be tricky and sometimes frustrating but once they are rig
Electronics Forum | Sat Dec 17 14:51:45 EST 2005 | Ola
"What worries me is that a lot of people speak about what they have heard, but there is no firm facts on exactly what the situation is." I do not understand this reply, because what can we do beside listening & read, unless we sometimes ourself do t
Electronics Forum | Thu Jan 05 15:42:26 EST 2006 | samir
Grant, The strength of the joint in a CCGA is the column for one...it's more ductile, made out of 90% Pb, and it's meant to compensate for the massive CTE mismatches between the ceramic and the board (ie the columns flex to relieve stress from the e
Electronics Forum | Sat Dec 03 02:10:59 EST 2005 | Homer J
1. What are we talking about: pcb:s or pcba:s? 2. What exactly do you want to attain with this board test? 3. Are you a pcb manufactor or a pcba manufactor? 4. You did not mention what type of boards you want to test? 5. Mechanical, operating enviro
