Electronics Forum | Thu Nov 21 14:17:27 EST 2002 | MA/NY DDave
Hi I can't give you the answer for your question because I have too many questions and would have to know a lot more before I was comfortable giving any advice. I have done mass Baking of piles of PCB's as a needed evil when piles of boards were ex
Electronics Forum | Thu Nov 21 15:09:29 EST 2002 | Bill Barthel
There have been a number of papers and articles on the subject as well as tutorials and workshops sponsored by SMTA, etc. I can send you a paper I presented in 1995 that may cover most of your questions. There are also many other resources that mig
Electronics Forum | Wed Nov 20 10:33:14 EST 2002 | dphilbrick
Adam Generally the answer is yes. But there are many considerations. First a couple of questions 1 what flux are you using 2 Do you have top side pre heat in your wave solder machine 3 what is your measured top side temp. 4 what is your dwell time
Electronics Forum | Mon Dec 09 08:13:06 EST 2002 | MA/NY DDave
Hi Yes it is common to design for more uniform heat transfer during the soldering phase or even during the operation phase. It all depends on how bad the problem is during automated assembly or during usage. The only difficulty is that the designer
Electronics Forum | Tue Dec 17 08:55:52 EST 2002 | Randy Villeneuve
Grant, The board maybe the problem but how is your oven working? Is it a convection oven and how many zones (top and bottom)? What does your profile look like? If you are unsure and if you only have one oven, send your board to Soltec or Electrovert
Electronics Forum | Sat Dec 14 02:51:24 EST 2002 | MA/NY DDave
Hi Thanks for this info. Hope someone new also enters. Funny I just picked up an article, too small, that writes that dots on some known pattern are used to measure distortion and then it shows distortion for square shapes (barrel and pincushion d
Electronics Forum | Fri Dec 13 16:39:42 EST 2002 | Gris
Hi, Look for papers on SMTA there are a lot of papers on lead free rework. If you dont find any let us know here I am sure you will receive many. Here are a just a few http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=%22lead+free+rework%22&
Electronics Forum | Wed Dec 25 19:36:57 EST 2002 | MA/NY DDave
Hi DaveF already gave you some fine answers. Yes I have seen CNC routed copper PWBs, and the literature is filled with many unique trace types including laying of fine wires on a board or embedded. You wanting .15mm, and I am guessing, low resistan
Electronics Forum | Thu Dec 26 13:02:15 EST 2002 | MA/NY DDave
Hi Again, As I was thinking about this, I remembered another unconventional way that I was told about from one of the starters of this technology. Now I don't think anyone would use this technique anymore, yet here it is: Press Cutting and Pushing
Electronics Forum | Mon Dec 30 01:31:36 EST 2002 | MA/NY DDave
Hi I think you already have the answer. It isn't the same as the true comparator of yesteryear, yet YES, some of the assembly machines have visualization post placement, compared to a golden board or dimensional images imported into the software.