Electronics Forum | Mon Aug 30 14:14:23 EDT 2010 | sreid
Thanks Dave, I was able to get an automated dispenser to apply an amount of paste that should be sufficent. My only question is should I bake the boards before solder is applied and the boards are reflowed. I ask this because the boards have been s
Electronics Forum | Fri Oct 29 09:51:22 EDT 2010 | scottc
Darron Good morning, I hope you are doing well. Referbishing fixtures is not a popular solution, the better way to confirm you are getting the lifecycle out of the fixtures is to contact an expert on fixtures and have them evaluate your process. T
Electronics Forum | Tue Oct 26 16:41:05 EDT 2010 | sai
I have been trying to get the profile right for this part(OMAP3503DCBC) , but still struggle. I'm using the Herller 1809 MKIII oven. I look at the profile recomended by TI and still issue with the solder ball collaps and wetting. My peak temp @256
Electronics Forum | Tue May 31 16:52:57 EDT 2011 | xray
Hi SSager, Check out the FA Inspector. It provides 1 Automatic Detection Mode and 2 Manual Inspection Modes. Its used to automate First Article Inspection Tasks and enhance today's principally manual process using microscopes and pen and paper. T
Electronics Forum | Tue Feb 01 10:11:36 EST 2011 | clampron
good Morning, it looks from the peak temperature that this is a RoHS application? If so, is the BGA that you are having issues with leaded? If so, you might be experiencing "ball drop" where the ball becomes disconnected from the component substrate
Electronics Forum | Wed Jan 26 10:43:32 EST 2011 | grahamcooper22
From our experience with our gel fluxes the depth of the flux cavity can be 30% ~ 70% of the ball diameter. You'll probably need to do some tests to find the optimum for your process. If you have really fast movement on pick and placement machine the
Electronics Forum | Wed Mar 09 20:32:46 EST 2011 | ganzziani
I am planning to purchase a pick and place this month, does anyone have experience or heard anything about the TWS Quadra pick and place? The unit I am looking at is preowned, it has around 100 feeders, and it is selling for around $11k. The boards
Electronics Forum | Thu Mar 31 20:16:31 EDT 2011 | tkirk
We recently decided to try using a different source for our bare boards to save money. On two different batches of PCBs now from the new source, we are seeing beading including some serious enough to short out underneath 0805 parts. We have never re
Electronics Forum | Thu Apr 14 09:39:41 EDT 2011 | blnorman
ROSE has the advantage in that it does have a specific acceptance criteria (J-STD-001), whereas the IC does not. ROSE allows the test to be run at ambient or at an elevated temp, IC requires the component/board/assembly to be "cooked" for 1 hour @ 8
Electronics Forum | Mon Jul 11 09:24:33 EDT 2011 | kahrpr
You need to check some other stencil places all the ones I deal with, Turn them around same day if I get the files early enough. Also i have a California stencil house which gives me 3 extra hours (east coast guy)I only pay extra for the shipping. Th
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