Electronics Forum | Sun Apr 04 10:16:16 EDT 2004 | cyclopsn
I'm involved in backplane manufacturing process. There are about 10 electrolitic capacitor assembled in my board.These capacitor are soldered using a selective soldering machine. My problem is that these capacitor will charged up and failed as short
Electronics Forum | Thu Aug 19 12:35:27 EDT 2004 | rlackey
Hi Snehal, Here are some considerations for you: Will you be doing Lead free soldering in the near future? What level of throughput are you looking for - are you high volume, medium or low volume? What is the support network like in your area? W
Electronics Forum | Tue Sep 14 18:27:37 EDT 2004 | MikeF
I would need a little more information to be able to rule out some of the possible causes. Have you checked to see if the pins with the minimal solder have anything in common, do all have traces to them? or internal power or ground plane connections?
Electronics Forum | Wed Oct 20 07:42:24 EDT 2004 | rlackey
Hi Arman, There are a number of sites dealing with the Corona Effect all with different slants in how it applies to them (Astonomers, physicists, Radio enthusiasts, etc.), but the basic definition I remember from my physics lessons at school is as f
Electronics Forum | Mon Jan 10 16:14:17 EST 2005 | fmonette
Hi Gary, With plastic BGAs it is more difficult to remove the trapped moisture because of ground planes in the substrate. If your parts have been sitting around for a long time they may be soaked with moisture and in some cases the 48 hours bake cy
Electronics Forum | Wed Mar 02 05:14:07 EST 2005 | ABHI
Guys, Solder paste height worries all of us as we encounter the non wets after reflow. More so in fine pitch QFP's. The non wets are not always caused by solder paste height. Many other contributors. Even the pad geometry on te board can contribute t
Electronics Forum | Fri Dec 16 10:51:08 EST 2005 | chunks
OK, this is what I'm talking about. If static is building up between the skin and clothing, how will wrapping it in a smock prevent it? The static is still there, the same charge, except know has a smock is covering it. Unless the smock is grounde
Electronics Forum | Tue Dec 20 16:56:53 EST 2005 | rsmith
I manufacture ESD supplies such as smocks and conduct ESD audits from time to time. With that said, here is my deal on smocks...ESD smocks work well to shield harmful static charges on clothing such as wool, silk, and synthetic fabrics. It is like we
Electronics Forum | Fri Mar 31 12:27:27 EST 2006 | Marcus
We have used the SN100C for over a year now with fanastic results. We use the SAC305 for SMT and SN100C wire exclusively. There are no problem mixing the alloys. I am also on the commitee for the NASA testing. The SN100C did out perform SAC and SnPb
Electronics Forum | Wed Jul 19 09:21:54 EDT 2006 | Chunks
That's like asking who's Mom is the best Mom. Your main goal in choosing a screen printer is based on several things: Size for your boards. Speed of your line. Board layout in ref to edge clearance / use of breakaways. Post inspection 2D/3D of paste
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