Electronics Forum | Wed Feb 03 14:33:41 EST 2010 | neiladams
If you are trying to reduce the weight of existing fixtures that may be more difficult and expensive than starting from scratch. If you want to reduce the weight of future fixtures and we could discuss some concepts that could save significant weigh
Electronics Forum | Tue Feb 17 18:17:28 EST 1998 | John Wilson
I am looking for any information or testing data done on the amount of weight that can be held by a bga package based on size of the solder sphere and number of spheres. I am reflowing components with a bga package on the opposite side and looking f
Electronics Forum | Thu Nov 01 17:42:45 EST 2001 | davef
Wolfgang is correct. Search the fine SMTnet Archives to find information on the component weight versus pad size during adhesiveless double sided reflow. Do not mess with different solder materials.
Electronics Forum | Mon Jul 06 18:00:16 EDT 2015 | jwqc
Does any one know how to calculate BGA height change after reflow oven? I guess the calculation will be based on the component size, weight, ball diameter and ball count of the BGA, but how to get the actual height?
Electronics Forum | Wed Jul 14 14:10:11 EDT 2004 | chad
I've had several customers use bean bags. There are a couple companies that will custom make them per size and weight. Other options are wave fixtures. You can contact me offline if you need more specific information 503-924-2747
Electronics Forum | Thu Mar 09 16:33:30 EST 2006 | russ
Is there a way that you could plot the data points of your profile into excel and post somewhere? Or can you give us some data on what your profile looks like? What exactly does this board look like? thickness, size, copper weight?
Electronics Forum | Fri May 15 00:07:38 EDT 2015 | aapsmt
there can be so many different causes. can be component library height issues. step program z axis offsets - i have seen accidental positive values entered so the components are literally dropped onto the pcb haha. but it does depend on the size of
Electronics Forum | Wed Jun 15 19:08:19 EDT 2005 | chad
Steve, A company called Bearwear, Inc. is who I refer my customers to. They will make any size and any weight you want. Prices are reasonable to. Give me a call if you want there number Chad Pentagon EMS 503-924-2747
Electronics Forum | Mon Aug 11 17:42:52 EDT 2003 | Kris
How can one go about defining the complexity of a PCB for characterizing reflow profiles A large balanced board may be easier to profile than smaller unbalanced board ? Any ideas how to define an index to calculate the complexity based on size,weig
Electronics Forum | Tue Feb 27 18:26:21 EST 2007 | jmelson
The machine is 2000 miles away, and the eBay auction has not closed yet. I'm working from what pictures and spec sheets I can find on the net right now. If I do win the bidding, I will need to be sure there is an opening wide enough for the machine
