Electronics Forum | Wed Aug 07 12:35:36 EDT 2013 | cyber_wolf
I was asked how we verify that the thermocouples INSIDE the reflow oven are calibrated. That seems pretty impractical to me. Has anyone come across this ?
Electronics Forum | Fri Oct 30 10:17:05 EDT 2015 | esoderberg
You don't say how many headers you have to solder. I usually spec in High temp headers and use a pin-in-paste methodology and double reflow. Can you get your headers high temperature?
Electronics Forum | Thu Mar 06 11:37:17 EST 2003 | msivigny
Hello Phil, sorry for the confusion, because of our level of defect control and tracking at each process step, we did not use AOI systems at the time. We had a manual inspection station after reflow, then ICT and Functional/Final test for each produc
Electronics Forum | Fri Feb 11 19:07:16 EST 2005 | primus
We are also looking for AOI machines, pre- and post-reflow. We already tried one machine from the UK (I don't remember the name, I perfer to forget we ever had it) and they told is it would do everything we wanted. Maybe so, but not well enough. It s
Electronics Forum | Tue Sep 14 20:21:19 EDT 1999 | Pat Copeland
I am looking for help on doing smt equipment qualifications. I need to find some examples to follow. The equipment to be qualified is a Stencil Machine, Pick and place machine, and Reflow oven. We manufacture medical devices so it has to be somewhat
Electronics Forum | Sat Oct 06 05:33:47 EDT 2001 | spchua
I had recently encounter the "black and grey" pads problems for the BGA pad after the convection re-flow. The pads shows in in "black and grey" color and a litter solder in it, and it happen in ramdom, when applied heat and solder on the "black and g
Electronics Forum | Tue Jul 09 15:20:19 EDT 2002 | pjc
When you look at the capabilities of Combo machines they tend to sacrifice performance when compared to separate X-ray and AOI machines, meaning they don't do either the X-ray or AOI operations as well as a machine that was designed to do only one. A
Electronics Forum | Wed Aug 21 10:26:08 EDT 2002 | stownsend
We are using OSP coated boards and no-clean solder paste. In a few instances, we are seeing increased distortion in an audio circuit. Has anybody seen or heard of surface insulation resistance (SIR) decreasing after reflow on OSP boards? Is it possib
Electronics Forum | Fri Jan 28 07:31:33 EST 2005 | David
Our company are going evaluate closed-loop feedback system with AOI as soon as possible. I would like to know what is your opinion that what are the main benefits in this application?? And we would like to get as less as possible scrap products.. How
Electronics Forum | Wed Feb 16 14:47:04 EST 2005 | Valerie
Mike, To answer your question, Yes we have thru-hole parts on the boards that we converted to double-sided reflow, we use pallets to select solder the leads. I suppose Masking would work, but that's using a lot of mask. Can I ask, whats preventing
