Electronics Forum | Thu Aug 14 13:15:07 EDT 2008 | mbnetto
Thanks Davef! I got have an ideia about the solder paste consumption using this calculator
Electronics Forum | Wed Aug 13 12:48:27 EDT 2008 | mbnetto
If I had the stencil and the PCB I would have done this before. But I don't have both!
Electronics Forum | Wed Aug 13 12:40:22 EDT 2008 | dphilbrick
easiest way is to weigh an empty board and then weigh a printed board, best to do 10 or so and take an average.
Electronics Forum | Wed Aug 13 22:23:24 EDT 2008 | davef
8.4 * SAC305 => 7.36 * Sn-3.5Ag => 7.5 * '....in' [96.2Sn-2.5Ag-0.8Cu-0.5Sb] => 7.39 * Sn-4Ag-0.5Cu => 7.39, 7.44 * Sn-3.8Ag-0.7Cu (Multicore solder) => 7.5
Electronics Forum | Thu Dec 09 07:21:10 EST 2010 | scottp
You won't have 2 mil height because the solder doesn't remain brick shaped. It's a dome. In the past I tried doing some calculations using the formula for the volume of a spherical section and also tried using a simulation program that accounts for
Electronics Forum | Mon Dec 23 17:20:05 EST 2002 | davef
Try: * Prebake * Flux density * Conveyor speed * Upper preheat * Cooling time * Chip wave * Solder temperature You could add immersion depth (1/3 to 2/3 of the board) to convince yourself that it has the least impact of any variable in wave solderin
Electronics Forum | Wed Mar 28 08:34:31 EDT 2007 | Mark
Hello, I am trying to find out your opinion about using soldering bench top soldering robot to solder THT connectors (diffrent). What is your experinces and what is limitation for this system. We can't use wave soldering machine due to the complex
Electronics Forum | Thu Jul 14 11:52:16 EDT 2005 | davef
Sure you can use SPC charting on the wave setup parameters to warn of impending problems. Examples of useful points of analysis are: * Dwell * Temperature * Pot analysis Certainly there's a range of other process controls that could be monitored.
Electronics Forum | Mon Apr 02 20:47:22 EDT 2001 | davef
Cuppla questions for ya ... Where are the shorts [above the mask or between the mask and the laminate]? On the board, what material is between the copper traces and the mask? What type of solder mask(s) used by your suppliers? What are they using
Electronics Forum | Fri Oct 18 21:31:15 EDT 2002 | caldon
Many times the board may look the same but incases there could be subtle differences that could cause your process to go out of process limit. With boards that look alike you still need to consider: Solder paste (Is key to the reflow profile) compone
