Electronics Forum | Tue Sep 14 19:47:16 EDT 2004 | davef
use something other than HASL. "The rest of the world seems to be processing with no problems..." [Hello!!! Earth to Carol. This is a test.] Things you are considering could be more trouble than they�re worth. "1) Reduce via hole size" [If you re
Electronics Forum | Fri Jul 13 19:08:55 EDT 2001 | mparker
Home plate apertures are designed to reduce or eliminate solder balls that occur when placing a chip and reflow of the solder. This aperture type is usually desired when processing with a "no-clean" solder paste. The design of the aperture is usually
Electronics Forum | Wed May 05 20:22:33 EDT 1999 | ADRIANO FERNANDES
I would like to know if someone aleady have problems with Ceramic Capacitors SMD in In-Circuit Test (see below)and how did you solve this problems ? PROBLEMS 1 - Only one kind of capacitor (2n2F), of all capacitors on board, sometimes are open, and
Electronics Forum | Fri May 07 13:25:00 EDT 1999 | anirooth
| I would like to know if someone aleady have problems with Ceramic Capacitors SMD in In-Circuit Test (see below)and how did you solve this problems ? | | PROBLEMS | 1 - Only one kind of capacitor (2n2F), of all capacitors on board, sometimes are o
Electronics Forum | Fri May 07 15:08:51 EDT 1999 | ANIROOTH
| | I would like to know if someone aleady have problems with Ceramic Capacitors SMD in In-Circuit Test (see below)and how did you solve this problems ? | | | | PROBLEMS | | 1 - Only one kind of capacitor (2n2F), of all capacitors on board, sometim
Electronics Forum | Thu Sep 17 08:31:34 EDT 1998 | Dave F
| can anyone help with information about I-shape of SMDs. | our Design includes this shape of contacts. we are searching for information on quality judgement of solder joints with I-leads on Pads. Please help. Tom: I saw your earlier post. I'm not
Electronics Forum | Mon Apr 13 17:03:40 EDT 1998 | EFData
We are having some difficulty soldering a 240 pin Altera device. We use Alpha WS-609, a very generic profile for that solder paste, and a 6 mil stencil with laser cut apertures (1:1 ratio). This is a 20 mil pitch device (aperture size is 10 mils X 75
Electronics Forum | Mon Apr 01 07:41:40 EST 2002 | davef
Hey Bob, Boy, you are lucky to have a laboratory, and now colorful pix!!! The only silver IMC that you will see are: * Ag6Sn, much less likely at 'normal' soldering temperatures * Ag3Sn, much more likely Allowable silver concentration: * Below 2%
Electronics Forum | Thu Apr 14 06:54:02 EDT 2005 | teera
hi! below are the item need to check: 1)top plate condition(under screen squeegee). 2)under screen clean contact position(with stencil) 3)make sure the thickness of wiper paper not so thick(not over 6o gm)becaue it will effect the vacuum suction. 4)s
Electronics Forum | Tue Aug 16 00:27:12 EDT 2005 | Peter
Hello, I have a question on white residues formation at wave soldering. We have recently run experiments to test the performance of various halide-free water soluble fluxes (ORH0 under JSTD-004). The flux was applied through a spray fluxer and all P
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