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 | Sun Dec 08 22:20:39 EST 2002 | grantp
Hi, We have been manufacturing a PCB, however it's been quite tricky to profile, as the edges of the PCB are reflowing before the center of the PCB. I have looked at the design, and there is a small power plane for 2.5 Volt in the center of the PCB
Electronics Forum | Mon Dec 09 09:54:16 EST 2002 | davef
Large copper pours create an unbalanced lay-up that is bad design practice, creating problems in fabrication and assembly. The hatching a previous poster mentioned could be an alternative. Stepping back a bit and wondering, what's the problem? You
Electronics Forum | Mon Dec 16 10:05:29 EST 2002 | Grant Petty
Hi, Thanks for the info. We are reflowing the boards, but just barely. Sometimes we get the QFP in the middle of the copper area not reflowing, and it's pain. The joints are dry, and I am not sure if it's caused by lack of heat, or the flux going ba
Electronics Forum | Thu Aug 13 14:43:23 EDT 2015 | alphatronique
HI i try to figure how the "Manual load adapter" work on a T3 Table machine ? seem that the table always try to move the board to the the left sensor location ,but if i use the magnet manual table it will never find the board on the table convey
Electronics Forum | Tue Nov 09 04:21:11 EST 2010 | bising
Hi SMT World, I am facing a technical challenge related to an SOIC 14lds with thermal pad on it's belly that needs to be soldered onto PCB, together with leads. It is a 50 per board, expected 80% solder load on every one. We have some units without
Electronics Forum | Thu May 23 11:23:47 EDT 2002 | yngwie
Hi guys... Has anybody hv an experience with using a common or standard profile to reflow high mix brd ( say, low, medium and high )?. The reason for asking is that, we are running high mix low volume, and materials that were consigned is exactly as
Electronics Forum | Tue Jul 29 08:29:21 EDT 2008 | davef
Beyond the materials cost, one approach to estimating the cost of assembling a board is: 1 Direct cost * Determine the processes required to assemble the board * Separate parts on BOM according to process * Multiply number of parts in each process by
Electronics Forum | Tue Aug 12 19:18:34 EDT 2008 | arminski
Hi davef, couple of questions: clarifying costing of direct labor against overhead cost: an operator loading PCB onto the reflow oven is a direct cost, how about the reflow process time of the PCB while travelling inside the reflow, is that an ove
Electronics Forum | Mon Aug 06 14:08:56 EDT 2012 | dyoungquist
We run a MY12 and our largest layout has 9700 components of which about 8500 (88%) are placed by the Hydra head. Average run time for our layout is 75 minutes. Based on that and depending on what percentage of your components are Hydra mountable, y
winsouce.jpg)
.gif)