Electronics Forum | Tue Jul 03 22:18:33 EDT 2001 | davef
Assuming that you are talking about voids in solder connections: * Consider voids on the surface of your solder connection a defect. * Consider voids that you can't see to be a process indicator. See A-610C, 12.4.8 for authoritative guidance.
Electronics Forum | Wed Jul 04 03:33:47 EDT 2001 | alternativesmt
Dear Sirs, We have purchased a number of Teradyne 5539i machines and are looking for any Users that have this equipment or any experienceed engineers that have used them. We are also interested in peoples comments on this technology. Please reply to
Electronics Forum | Mon Jul 16 09:04:00 EDT 2001 | Hussman
No argument here. But I've don't think I've ever seen solder balls on 0402s. Even when they're placed on narrow G dimension pads, where there is little toe fillet, I've never seen a solder ball. But your idea of reversed homeplates would work grea
Electronics Forum | Fri Jul 20 10:35:34 EDT 2001 | slthomas
David, I've thought about doing this also with no clean boards that were poorly cleaned following a misprint (and subsequently reprinted, populated, and reflowed) but have shyed away because of the potential for damage to components from the ultraso
Electronics Forum | Fri Jul 06 09:39:18 EDT 2001 | johnw
Hi guys I am having problems with skewed placement of 0402 devices I would like to add the board has raised pads and we are placing on glue. We are now printing the glue rather that dispensing with a GL5. have any of you guys had this pro
Electronics Forum | Tue Jul 10 05:23:21 EDT 2001 | dhanashekar
DEAR ALL WE ARE LOOKING FOR A DIGITAL VIDEO COMPARATOR ,AN INSPECTION TOOL WHICH WILL HELP ME TO LOOK FOR ,MISSING COMPONENTS,VALUE,DIRCTION ETC, AND IT SHOULD BE ABLE TO BE PROGRAMMED BY PLACING A GOOD BOARD. IT SHOULD ACT MORE LIKE AN AUTOMATIC OP
Electronics Forum | Wed Jul 11 20:19:13 EDT 2001 | davef
Can�t comment on the Volumetric LSM [although a little voice makes me want to say: someone commented positively on it in an earlier thread. Check the fine SMTnet archives]. The 300 LSM is expensive and has a lousy gauge R&R, but other than that, it
Electronics Forum | Thu Jul 19 09:56:52 EDT 2001 | Damian Holzmann
The obvious difference between 2D and 3D is that an accurate volumetric measurement can only be obtained with a 3D measuring system. Laser line measurement in 2D does not allow accurate volumetric measurement. If you modify the aperture in a stencil
Electronics Forum | Wed Jul 11 18:32:34 EDT 2001 | Darby
Mark, We print and dispense with Amicon "D 125 F". Solvent used is Electrolube "SSS", which is also used for solder paste removal/pcb cleaning for misprints and rework both manually and ultrasonically. I like it - good stuff but at $25 AU per litre i
Electronics Forum | Wed Jul 11 18:42:35 EDT 2001 | Darby
As I mentioned in the previous string we are happy with Electrolube "SSS". The guy who built our ulrasonic cleaners recommended it and it works very well. You don't have to change tanks or machines for a switch from paste to adhesive. It doesn't leav
