Electronics Forum | Fri Jul 10 09:56:11 EDT 1998 | Justin Medernach
| I am looking for some guidelines on evaluating solder paste. I am specifically interested in No-Clean Pastes, as they are a completely new ball game when it comes to slump, tack time, stencil life, tack time, etc. | Thanks for any and all help give
Electronics Forum | Thu Jul 09 11:32:16 EDT 1998 | Justin Medernach
| What should a good gold joint look like? We've run boards for our customers that look kinda dull but seemed to wet properly and the boards fired up just nicely! Should they look nice and shiny like our HASL boards or is "a shiny joint is a good joi
Electronics Forum | Mon Jul 06 17:42:49 EDT 1998 | Bruce Houghton
| I'm having a problem getting good reflow on gold sufaced boards. The profile looks good and I have adjusted it both hotter and colder and adjusted the various times ( soak, reflow ) to no avail. What realy gets me Is that a month ago we built some
Electronics Forum | Wed Jun 24 18:41:23 EDT 1998 | Bill Chrisitian
| Dennis, thanks for your input. I myself can't remember having any caps fail due to thermal stress/cracking. But the guru's here says it happens and since the assembly is for space flight, it's a requirement to preheat. Also, your process is exactl
Electronics Forum | Thu Jun 25 11:53:09 EDT 1998 | Dave F
| | Dennis, thanks for your input. I myself can't remember having any caps fail due to thermal stress/cracking. But the guru's here says it happens and since the assembly is for space flight, it's a requirement to preheat. Also, your process is exac
Electronics Forum | Thu Aug 13 21:58:14 EDT 1998 | Alpha Guy
When things go wrong (see below) it can usually be attributed to a communication problem. This is exactly the issue with this case. A meeting has been held and corrections have been made with no hard feelings. However, another call rather than a
Electronics Forum | Tue Jun 16 07:26:07 EDT 1998 | Sherry
Going, going, gone, but back? It must be early, this post is quite confusing, ok I'm having a blonde moment. Sounds like you're going to be quite busy, I wish you well! Also, wanted to let you know...my email has been down Once they get it operatio
Electronics Forum | Sat Jun 13 09:36:46 EDT 1998 | RNLM
| Is cost an issue? I evaluated Siemens Siplace about a year ago and the price per placement was twice what Phillips Machinery has to offer. We too are a high mix/low PCb count shop. Also, Siemens has many hidden costs and the references I talked
Electronics Forum | Wed Jun 10 13:39:56 EDT 1998 | Justin Medernach
| Our company wants to buy a rework station for BGA's. I would like to know what is a good BGA rework station. IR or hot air? Do we need a rework station with optical placement or can BGa's be placed manually during rework. We have seen a demo of an
Electronics Forum | Mon Jun 08 11:39:28 EDT 1998 | Earl Moon
| How do I mechanically/visually inspect BGA devices when they are soldered to a PCB for possible solder, or other, defects as a first step before part removal and further analysis? I have had board failures due to poor soldering--I think? I can pr
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