Electronics Forum | Fri Dec 04 23:15:45 EST 2015 | mac5
You say that there is no green solder mask around the lands of the BGA only silk screen. If that is the case I would be concerned about the solderabilty of the component if the silk screen gets onto the pads. The application of solder mask is much mo
Electronics Forum | Tue Jan 13 12:54:11 EST 2009 | boardhouse
Emil, Part of the problem it sounded like is that the color was not clearly defined as light or dark in Matte or gloss. Your example of car paint would have the same issue if you just ask them to paint your car green. What color of green would y
Electronics Forum | Fri Mar 02 09:08:10 EST 2001 | markkrmp
Frank, I am not talking about the masking on the PCB. I am actually talking about the masking on the solder side of the BGA. We have a very very high dollar BGA and are trying to reclaim alot for reuse. When we remove the BGA from the assembly, you
Electronics Forum | Fri Apr 06 04:10:25 EDT 2001 | kensmoke
We recently had a multi block panal change at the vendor Now the production lines are producing solderability defects in great number. The makeup of the pcb is a type of fiber glass mask green in color and pads with no tinning just copper lands.
Electronics Forum | Tue Dec 11 18:32:30 EST 2001 | edmentzer
Does anyone have experience with different colors of solder mask. I am interested to know if a clear or light color mask is better in the reflow process. Most of the boards we do have a green solder mask. It seems to me that I read somewhere that
Electronics Forum | Thu Feb 12 07:58:54 EST 2015 | erezah
A-610E, 10.7.4 covers solder mask discoloration. > Use that for your disposition > > In a previous > thread, Boardhouse told us "Here are a couple of > things that can affect color. * Material color > is the major, * Matte green from Enthone wou
Electronics Forum | Fri Jun 23 14:10:01 EDT 2000 | Chrys Shea
Sounds like the mask to me. Had a similar situation a couple years ago. The mask wasn't fully cured, so it absorbed water that the preheaters couldn't dry out. When it outgassed at the wave, it caused a lot of micro turbulence that broke the surfa
Electronics Forum | Mon Jan 22 09:28:57 EST 2001 | Adam
The assembly is HASL finished. The colour of the solder mask is green, ( sorry I dont know the technical name ).The flux is No Clean (Koki JS3000)which is seeing a preheat temp between 90-100degCel. The solder pot is set at 250degCel and is 63/37.
Electronics Forum | Fri Jan 09 01:15:45 EST 2009 | sarah_9
Hello, Hey friend i also wonder why always green , recently i purchased blue solder mask for my brother, it looks more attractive and lively. Regards, sarah_9 www.museoshop.com/
Electronics Forum | Thu May 06 09:15:51 EDT 1999 | Haitham Sakr
1. PCB boards coated with photoresist both Single & Double sided baords especially the double one with dimensions of 1 m square or 1/2 m square with a life guarntee not less than 3 years. > 2. Photoresist spray bottles of 200ml or more. > 3. Solder &
