Electronics Forum | Thu Apr 04 03:20:59 EST 2002 | ianchan
Good points... Thanks everyone. ref back to Mr.Bob's/Dave's observation (not in order) on brick accuracy, position & placement, Stencil apperture geometrical opening, will feedback to my team to brain-storm further.
Electronics Forum | Thu Apr 04 09:22:35 EST 2002 | itempea
What are the normal control limits in the industry, for a well controlled process, using a 6 mils stencil? Should they be different according to the surface finish (higher UCL for ENIG, Im SN, etc, lower UCL for HASL)? Thanks, Ioan
Electronics Forum | Wed Mar 20 06:26:46 EST 2002 | hany_khoga
Thank you Stefan but unluckyly those board have many PTH components so that they can not re-enter the reflow oven. But by the way , are you sure that if we switch off the cooling zone we can find the solder still liquid? Hany
Electronics Forum | Wed Mar 20 09:06:25 EST 2002 | stefwitt
there are a few companies using this method to recycle valuable components and make good money with it. The memory boards in computers i.e. could be build with used components.
Electronics Forum | Wed Mar 20 07:57:30 EST 2002 | davef
Purchase: 7095 - Design and Assembly Process Implementation for BGA's Make every effort to distribute the test pads, because if you keep them massed at the ball, it would be a bijundo kick in the BGA rear section, when all of those pins released.
Electronics Forum | Wed Mar 20 15:18:09 EST 2002 | angiewest
You may want to check out IPC-SM-782 "Surface Mount Design and Land Pattern Standard" http://www.ipc.org Good Luck
Electronics Forum | Wed Mar 20 15:25:05 EST 2002 | angiewest
Looking for a company to recycle plastic reel and I.C. tubes. I already recycle trays with Smart Cycle (formally Semicyle). I hate to throw that stuff away. The local recycling places only recycle plastic 1 and 2. Most of the reels are 3's.
Electronics Forum | Wed Mar 20 19:10:43 EST 2002 | rmerk
I would like to know if there are any detailed studies or sources of information regarding the use of round pads vs square pads with chip components (0402 and greater).Thank you.
Electronics Forum | Sat Mar 30 17:42:33 EST 2002 | davef
Never read anything like that, but with the same courtyard, you have the ability to position less material with a circle than a square. Search the fine SMTnet Archives for a heirarchy of sources from which to select pad dimensions
Electronics Forum | Tue Mar 26 14:28:03 EST 2002 | Joe Herr
John, You must consider the old saying , When the going gets tough, the tough get going! Roll your sleeves up man !If it were easy, everybody would be in this business.
