Electronics Forum | Wed Sep 18 18:48:33 EDT 2002 | davef
Fabs can produce a solder mask web between 20 pitch leads, but I've never seen a web for 16 pitch leads. Although, I would like know a supplier that can lay-down a fine web. Minimum solder mask web width is about 0.004 thou. An absolute mininum o
Electronics Forum | Tue Oct 22 17:23:35 EDT 2002 | Yannick
Hi, I wondering if someone know the anwser to that. I'm using a solder paste 63/37 and on the solder joint we have a tiny little layer or flux who is like crystalin. I try to play with my profile the get it off but I don't get much success. So D
Electronics Forum | Thu Oct 24 17:32:54 EDT 2002 | ksfacinelli
The big problem we saw was the appearance of the solder joint after the water wash process. We saw the joints turn white through the absorption of moisture. Looked real bad but still functioned. I would stick with using only one of the processes a
Electronics Forum | Mon Dec 16 15:12:05 EST 2002 | sueph
I made a small bean bag from 100% cotton filled with rice, to hold down small resistors that wanted to tilt over solder wave. It worked fairly well as long as I didn't try to take it off the components to soon, as sometimes they would want to stick
Electronics Forum | Sun Dec 15 22:31:43 EST 2002 | craigj
Has anyone heard of vias cracking (barrel from pad) when being wave soldered. Was told this was a big problem by contract pcb designer, he always tent vias because of this. The reason was that the solder filling the vias caused stressing and then sep
Electronics Forum | Mon Jan 13 12:33:27 EST 2003 | Steve Freeman
We are currently looking for a local source to perform in house, hands on training for PTH hand soldering and rework. The instruction must be hands on and cover from the basics of soldering through performing rework. We have investigated training thr
Electronics Forum | Thu Jan 16 17:54:12 EST 2003 | Ren�
Hi burb , reflow temps are same than other profiles just follow your solder paste recomendations , Will help you a lot a solder paste with Silver , or if you want to eliminate completely the granular looking , use nitrogen with your oven ( You will s
Electronics Forum | Fri Jan 17 15:47:28 EST 2003 | davef
There is no documentation like you seek. The life of your part in storage is primarily a function of: * Quality of the part fabrication process. * Ingenuity and diligence you apply in protecting the parts from the environment. You need to: * Handle
Electronics Forum | Wed Feb 12 20:13:39 EST 2003 | cmiller
Does anyone have any experience with setting up a nitrogen supply system to a wave solder machine that is equiped for it? Does the nitrogen need to be room temp or higher? Does it make a big difference with bridging or solder quality? We bought a use
Electronics Forum | Fri Feb 21 08:41:06 EST 2003 | davef
Yes. Reflow soldering PTH components goes under different names. * SMTnet's friend Bob Willis popularized the "intrusive reflow soldering" term. * Jim Blankenhorn, another of our friends, and others popularized "pin and paste". * Still others use
