Electronics Forum | Tue Sep 16 15:47:05 EDT 2008 | ismir
Hello everyone! I'm a student of electrical engineering currently working on a thesis for my BSc degree. It will be about post reflow AOIs and AXIs, and I'd kindly like to ask you for some help with it. I would like to know if there are any standar
Electronics Forum | Mon Sep 22 17:51:00 EDT 2008 | snsmt
THe software i am using at my company is cad2cad. I uploaded a working program and i was able to see the program. I thought it would just be a bunch of x,y coordinates, but it is more confusing than i thought. Does anyone have any idea where i can st
Electronics Forum | Sat Sep 27 10:40:24 EDT 2008 | hussman
Hello all, Just had a problem where the solder paste does not want to stick to the pad, thru the stencil. We have run this board for years with no problem, and this new lot of boards is giving us problems. I know it's a board problem because they
Electronics Forum | Wed Oct 01 13:19:18 EDT 2008 | evtimov
I am also doing research on rework machines. for now I saw : Ersa - german http://www.ersa.de/en/produkte/smt_bga_rework/frame_smt_bga_rework.html DenOn- Japanese http://www.denondic.co.jp/en/products/rd500_2.html, Metcal http://www.metcal.com A
Electronics Forum | Wed Oct 15 21:53:59 EDT 2008 | mariss
50%) is high. With high humidity, there is also minor amount of spatter (10 to 20 'balls' per board). It is this that I would like to eliminate. I'm just a small guy running a young company here in Tustin, CA. Our product is very profitable and we
Electronics Forum | Wed Oct 15 17:20:57 EDT 2008 | mbrunton
2, I have to scroll down to the bottom to see the image... and the outline of the legs isn't very clear. The legs are sort of blurred together. I had tried lowering the CCD offset in the part definition to -50, but it still looked bad. Could this
Electronics Forum | Thu Oct 30 14:46:33 EDT 2008 | rgduval
I've used DBA in the past. It's not a bad MRP software for the price. Though, your mileage may vary. We were using an older version of it at my last company, and there was no desire to upgrade. From a manufacturing standpoint (bill of material co
Electronics Forum | Thu Oct 30 15:36:18 EDT 2008 | grantp
Hi, Sounds like your engineer does not know what he's doing. We have developed and built hundreds of thousands of boards with normal square pads for 0402, and we just use a 5 thou stencil with 5% reduction and it works well. Decoupling? What is tha
Electronics Forum | Tue Nov 11 19:41:06 EST 2008 | gregoryyork
Thats the problem residual residue from HASL fluxes Lead free especially are worse.Very hygroscopic and out gass and produce dewetting as well over wave soldered boards especially. Leave iron on blown joint and will after several seconds fizz and pop
Electronics Forum | Sat Nov 22 09:58:29 EST 2008 | realchunks
The only easy solution is not to handle the boards. Purchase true double sided reflow lines. Buy automated magazine loading conveyors. Check machine board supposrts. Are you sure it's from handling? We found it was 50/50 between board handling
