Electronics Forum | Thu May 09 18:06:42 EDT 2002 | bcceng
janchan, don't know how many LGA's/LCC/BCC's you are placing but a short term solution that I can recommend is the application of solder bumps to the component and than place it after board has gone through reflow or even at the same time. Our compa
Electronics Forum | Thu May 16 12:49:29 EDT 2002 | stefwitt
FAI appears to become fashionable in the Bay area. FAI on double side sticky tape is the first one I hear about. How does the customer test the functionality of the board, when the board is not soldered?. Components are not wasted for FAI. Wrong part
Electronics Forum | Wed Jun 19 22:03:23 EDT 2002 | davef
If you can assemble flawless products with these boards, do not be concerned about post-assembly quality issues. There is no current related specification in the US. Although, there may be some old military specifications that apply, but you would
Electronics Forum | Mon Jul 01 22:24:10 EDT 2002 | Por
Thanks for your advise Normally, We do not add any liquid flux (clean or No-clean) during touch up process but this case is an error. Lonco 23F is Nc flux. but our board is clean. However, there are 6 boards that found the white residue and our
Electronics Forum | Thu Jul 18 13:55:29 EDT 2002 | slthomas
Greg, So you mean that on a Class II board with 6000 connections (in our case, the board has about 1800 parts) you would average somewhere in the neighborhood of 540 connections touched up? My gawd, man, what are you building? We'd have to hire ab
Electronics Forum | Wed Jul 17 13:54:09 EDT 2002 | kenbliss
Based on the images I do not recongize the logo however it appears you have a pc board with the logo and no name. the pc board did have the UL recognized mark. If you go to Underwriters Laboratories web site http://www.ul.com with the recognized nu
Electronics Forum | Tue Aug 13 10:08:44 EDT 2002 | dougt
Tony, I'm in Ken's corner.....the speeds the manufacturers offer are pretty much meaningless when it comes down to your particular board. Brand X can say they will do 1,000,000 cph but when you put your board on the machine with multiple parts at di
Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend
We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib
Electronics Forum | Sat Sep 07 06:57:33 EDT 2002 | mk
I agree but, are there really heavy metals in this water? Our process is as follows. Print Paste Reflow Board (no components, water soluble paste only) Wash Board Same reflow profile for almost every order so no solder balling issues etc. Carbon an
Electronics Forum | Wed Sep 04 23:55:10 EDT 2002 | jersbo
aight... Ive read the SMT archives... Ive got issues,,, 25 boards WS boards with NC on them HOw do I clean them? Used Everkleen in Prewash and wash in a dishwasher , cleaned most of the NC flux off but I have residuals. especially on the fine pitch
