Electronics Forum | Thu Aug 20 19:07:29 EDT 2009 | smt_guy
reduce the stencil aperture to prevent tombstoning in vapor phase process. from my experience a 6 mil thick must be at least between 20 to 30 % aperture reduction for 0805's and below. cheers!
Electronics Forum | Tue Aug 18 12:14:59 EDT 2009 | zanolli
We are looking for suppliers of liquid vapor degreaser batch equipment for flux residue cleaning of PCB’s. Any recommendations? Thanks
Electronics Forum | Tue Aug 18 13:43:52 EDT 2009 | victorp
Is there a standard (such as IPC) or common industry practice in regards with x-out marking on rejected boards of a panel? Do board shops have to X-out both sides of the rejected board, or one side? If the answer is one side, which side should be ma
Electronics Forum | Tue Aug 18 15:36:40 EDT 2009 | davef
There is no standard. You need to decide when you want the cost of bad boards applied to your product cost. Search the fine SMTnet Archives for previous discussions, like: http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=20871
Electronics Forum | Thu Sep 03 08:39:53 EDT 2009 | markhoch
I'd be more concerned with the pcb itself then I would be with standard SMT components. Are you using a PCB with a high Tg? (170 degrees C or greater)
Electronics Forum | Thu Aug 20 07:10:46 EDT 2009 | davef
Questions are: * On what portion of the second side of the board [eg, solder only, solder mask only, etc] do you see this white hazy residue? * Could you attach a picture? * You mention cleaning this residue. What have you used to clean the residue?
Electronics Forum | Thu Aug 20 08:24:07 EDT 2009 | padawanlinuxero
Hi ! In both solder mask and solder joint, I am going to upload a picture today promise, I use only IPA and a ESD brush this kinda clean the problem
Electronics Forum | Thu Aug 20 08:42:32 EDT 2009 | voytek
Do you know if I can use Multi Pitch Tape Feeder from GSM2 platform on GSM and GSM1 platform? Thank you,
Electronics Forum | Fri Aug 21 11:00:48 EDT 2009 | boardhouse
Edoardo, if your going to try to push your book, why don't you disclose that the web site your pushing is yours. Boardhouse
Electronics Forum | Fri Aug 21 13:58:21 EDT 2009 | ghepo
Dear Mike, because that site and handbooks are property of many hands and because I work in a multinational company as manager of a PCB quality dept. Therefore, be mistaken for a "guru" in this major website, is not my purpose. Anyway, thanks for y