Electronics Forum | Wed Jun 20 13:50:52 EDT 2007 | rgduval
Dominic, I guess it would depend on criticality and volume. We do mostly low volume builds here, and the only time I do a solderability test is when we encounter an issue during production. That process works for us, considering the volume of the
Electronics Forum | Tue Jun 26 11:24:56 EDT 2007 | ck_the_flip
Patrick, Back in my rich OEM days, i actually DID measure mg/in^2. I bought a scale, which measured in mg, specifically for this. Basically, took a blank PCB, took a "before" weight, sprayed it, and then took an "after" weight. I measured at diffe
Electronics Forum | Mon Jul 16 16:02:08 EDT 2007 | ck_the_flip
I have zero experience with SN100c, but hey, how much different can it be from Sn63Pb37?! We solder large connectors all the time - sometimes these connectors reside on a ground plane area. We've been able to overcome hole fill issues (on 63/37) th
Electronics Forum | Mon Jul 30 17:32:34 EDT 2007 | chrisgriffin
When you teach the "teach boardstop Y" make sure the camera is seeing the leading edge of the board and not too close to the rails. It should calculate the pre-stop position correctly. I assume you have thoroughly checked the sensor. Also check th
Electronics Forum | Fri Aug 10 09:24:10 EDT 2007 | babe7362000
I am seeing allot of issues with SOD-323's in our Heller Oven. The parts seem to move or blow off their pads. We do have all the fan speeds on low and still having this issue. The parts are sitting in the paste not on top, so there is some force o
Electronics Forum | Fri Aug 24 14:15:24 EDT 2007 | clarkk
Ben, I'm not aware of any 'automatic' method to convert PTH footprints to SMT. Typically, many of the components are passives, and there may be a way in your CAD software to change the passives of a common size to a different footprint. That will co
Electronics Forum | Fri Aug 24 15:18:51 EDT 2007 | consultacionbc
Stephen, This is a board designed for medical apparatus and we're needing to change 3000 placements, it's about 2000 different parts. Some boards have about 90 parts and some have greater amount. Impedence of the board happens to be a great issue
Electronics Forum | Thu Aug 30 11:02:51 EDT 2007 | gmoritz
... talking two-lead LEDS with 2.5mm pitch ... Yes. That's what we are working with. > are the LED terminals shape were Square or > the naturally rounded? Some are round. Some are square. One is U-shaped. > Due to different insert rotations,
Electronics Forum | Tue Sep 11 04:45:25 EDT 2007 | pavel_murtishev
Good afternoon, Oops. Quite huge difference I must say. But you should try to tweak your profile anyway. First of all try to enlarge soak time as Mr. RDR has said. What process type do you use? Lead or lead-free? By the way, there are lead-free proc
Electronics Forum | Wed Sep 19 17:44:22 EDT 2007 | russ
there are IPC standards, I do not know them all off hand. What are the boards failing for? I have found that sometimes the original design is not optimum for any number of reasons. Some fab shops catch these and correct and may or may not inform yo
