Electronics Forum | Thu Apr 26 16:55:31 EDT 2007 | ratsalad
I am guessing Theresa is saying when that some SMT parts are soldered (not glued) very close to some PTH parts. So close that they can't effectively mask the SMT parts and have an opening for the PTH part. At the company where I work, we've been tr
Electronics Forum | Mon Apr 23 14:41:32 EDT 2007 | cdsullivan
Good afternoon everyone, We have a customer that wants to specify "cleaning processes" on a board that typically has a "no clean process". Normally, I would not care, but I have one component on this board for which I question the cleaning process.
Electronics Forum | Thu Apr 26 08:34:32 EDT 2007 | ck_the_flip
Pavel is right...Your Quality Group, customers, and Management will really appreciate Cpk's. We do Cpk's annually, or whenever a major mechanical change (motor, blower, etc) is made. Pavel is correct in saying that Cpk's on most modern convection o
Electronics Forum | Thu Apr 26 16:47:52 EDT 2007 | Cmiller
Is anyone using standard FR-4 material for ROHS? All I have ever seen to indicate the need to go to a high tg/td board is that the material may fail after repeted rework. I have a customer that is trying to use IS-410 and it is causing electrical pro
Electronics Forum | Fri May 11 18:13:02 EDT 2007 | jbecircuits
I need everyone's input. I am in sales and marketing for a PCB shop. I need to know by a vote from any CM's why my CM does not like Immersion White Tin and my other resources have no problems or complaints using white tin. Every time an issue comes u
Electronics Forum | Thu May 17 20:18:46 EDT 2007 | davef
Thoughts are: * Best option is: Ceeris International [P.O. Box 939, Old Lyme, CT 06371-0939; 860-434-8740 F860-434-8742 ceeris.com ceeris@aol.com Charles-Henri Mangin] surveys electronic assemblers and publishes reports tailored to their customers' n
Electronics Forum | Tue Jun 05 14:04:11 EDT 2007 | hussman
We have the same situation here. But generally it is the customer gives us a 1-up Gerber drawing and we need a multi-up or some form of breakaway to make the product. The way we achieve this is thru a Word document we call PCB Guidelines. We attac
Electronics Forum | Fri Jun 15 18:48:49 EDT 2007 | prologic
We have not processed very much 0402 size components in the past. We are finding that alot of our customers are upgrading their circuits and going with 0402 size parts. We recently processed one such circuit and odered a paste stencil 6 mil in thickn
Electronics Forum | Tue Jul 17 09:58:18 EDT 2007 | rgduval
I'd say it all depends on the CM, and how they cost out their production floor. I've seen everything from a flat cost per component placement (something like .05/machine placed smt part, .15/machine placed tht part, .25/hand placed tht part) to stra
Electronics Forum | Fri Jul 27 10:07:18 EDT 2007 | rgduval
Our preference has been ENIG. We find that we achieve higher quality (visually) soldering for through hole and surface mount parts, with less handling issues than when we use white-tin, or immersion tin. We are about to do a test on some boards tha
