Electronics Forum | Tue Jun 28 10:01:24 EDT 2005 | mskler
What is your stencil cleaning procesor.It sould not be wet after cleaning & what is room tempreture.?
Electronics Forum | Wed Aug 02 16:47:44 EDT 2006 | Merle
Should drying be done after aqueous wash? If so, how long and at what temperature?
Electronics Forum | Tue Apr 07 22:34:14 EDT 2009 | 1036
Board delaminated after reflow - see attached picture. Does moisture cause this problem?
Electronics Forum | Wed Dec 13 06:08:48 EST 2000 | jackofalltrades
We have seen this type of problem. After eliminating possibility after possibility we corrected the problem by throwing out the glue and starting fresh. It was not expired, just bad for whatever reason, we could not asertain what went wrong with it.
Electronics Forum | Thu Jun 27 11:56:40 EDT 2019 | slthomas
It seems to me that it would be easier to manually apply a little bit of chipbonder on the edge of the part after the first reflow than to tape the part down. The epoxy would cure sufficiently before the second reflow to secure the part after the s
Electronics Forum | Tue Jun 25 23:54:54 EDT 2019 | anhsang38
Dear Everyone, I'm having problem. the Switch component drop after reflow. First, this component placed on top side and through Reflow. Next, the Bottom side is placed component and through reflow. After that, the switch drop and have a gap. We are u
Electronics Forum | Wed Dec 08 19:16:20 EST 2010 | jgalarza
Can anyone tell me if there is a formula for finding the after reflow height of solder with no part attached? I have to print some pads that do not have any parts but there can not be more than 1.5mil of solder on the pad after reflow. I am going to
Electronics Forum | Thu Jul 21 08:29:05 EDT 2011 | diamondmt
I am having an recent issue occuring that after I have washed our PCBs using only high pressure DI water heated to approx 150 degrees and then being dried at 120 degrees, the once shiny metallic finish is now becoming a dull tarnished color, it does
Electronics Forum | Tue Dec 26 10:54:37 EST 2006 | yusufgomec
We use hot air leveling (HAL) process in pcb production. HAL process is 3 steps. �n 1. step flux. 2. step is HAL. And 3. step is rinsing. As you know there is mustn't any flux after rinsing operation. Our flux chemical is water soluable. But there ar
Electronics Forum | Tue Aug 22 10:57:48 EDT 2000 | caumel
Hi folk's With some pcb's after wave soldering ,we find some solder blobs on vias. There seems to be air inside these blobs What can we check in order to solve this problem? Thanks in advance