Electronics Forum | Mon Mar 16 09:02:07 EST 1998 | Justin Medernach
| We are going to try out a PCB manufacturer that has an Alpha Level for ensuring a flat finish on the PCB's. | I am interested to know if anyone has and experiences, either good or bad on how boards treated with this process are to assemble. Is the
Electronics Forum | Tue Sep 04 19:25:03 EDT 2007 | sueph
We just got new boards in that have ENIG pads. In the past we had a problem with too much gold getting into the wave solder pot from large connectors getting tinned at the wave. Do we have to worry about too much gold getting into the pot with this
Electronics Forum | Fri Jun 08 13:49:11 EDT 2007 | ck_the_flip
From my past experience, you can usually get away with OUT the chip wave if your SMD's are no smaller that 0805, and more importantly, there are no SOT23's. A nice, clean, inerted laminar wave (with a little smart or omega help) will solder your S
Electronics Forum | Thu Jan 08 15:03:40 EST 2004 | dwzeek
We have an ongoing problem with our QFP144 packages soldering. It has not received much attention until late due to some customer failures. Most of the failures would show up in ESS testing and be repaired. The failure rate is about 2 in 1000 parts f
Electronics Forum | Tue Feb 14 13:16:49 EST 2006 | Carol Stirling
CRITICAL DILEMA! Has anyone run into the problem described below and if so, what was the fix (besides not dealing with this Supplier)? Also, we do not have component manufacturing process experience. We are purchasing a surge resistor that function
Electronics Forum | Thu Mar 30 07:10:56 EDT 2017 | nickywan
I have a problem with some particle, dust and solder paste contaminate on PCB rack and need to clean up once a week by manual. Now looking for the equipment to do Inline cleaning with water jet & Hot air Dry concept. Not too big machine and concept l
Electronics Forum | Wed Mar 25 16:36:10 EST 1998 | Steve Joy
We have successfully put .016" vias in .030" pads. There is no drain off with .030" solder balls, since the actual volume in the .002" depression is low. We did notice random bubbles where, apparently, the solder reflowed and trapped the air in the
Electronics Forum | Sun Sep 26 11:54:06 EDT 1999 | Earl Moon
| i had a problem here, during the wave soldering process, we apply a water soluble mask on the gold finger to protect it from contamination. But after washing, there is still some mask left on the gold finger. | Can anyone pls advise is there any pa
Electronics Forum | Tue May 22 18:13:44 EDT 2007 | Frank
No, we haven't compared bills because we rarely let it cool completely down over night. I would think that the cost needed maintaining 200C over night versus 310C over night would be about the same, but a little less. But going from 25C up to 3
Electronics Forum | Fri Aug 09 11:59:31 EDT 2002 | bcceng
Tom, I developed a process for applying solder bumps on BCC32 and BCC48 successfully on my previous employer. The quantities were in the thousands a week, the following process is what I was using: Insert BCC's on process carrier (carrier holds 500
