Electronics Forum | Thu Mar 15 12:33:50 EDT 2007 | ck_the_flip
To do a profile at most companies, if you don't have a scrap board handy, you'll use the already-soldered board that's already been through ONE reflow cycle. You spend time attaching T/C's with the aluminum tape - after all, the prep-work is half th
Electronics Forum | Tue Mar 20 05:26:32 EDT 2007 | CL
Hi Chrissie, BGA Rework from one CM's view: 10% process problem (printing, reflow, voids, etc) 10% component failure (no other problem found) 80% "The board does not work therefore it must be the BGA" This, of course, is exaggerated. My point bein
Electronics Forum | Sun Mar 25 15:38:07 EDT 2007 | Gibbon!
Couple of things. Type T thermocouples are solder friendly. However usually a header with screw terminals poses no problem as the temperature differential is nil. Getting thermocouple leads wet causes problems because two dissimilar metals + condu
Electronics Forum | Fri Apr 06 18:17:49 EDT 2007 | davef
Mika: Based on what we hear you saying, we're not so sure we have a problem with the board layout [1:1 between board and interposer pads, non-solder mask defines pads], but with the flawed execution of the layout. If your board fabricator decides to
Electronics Forum | Sun Mar 25 17:02:41 EDT 2007 | johnwnz
Folks, I may be havign a thick day, it is Monday afterall and it has been very sunny over the weekend. We have recently started buildign a fairly high volume of products that is using intrusive reflow on two PTH DIN connectors and havign soem good s
Electronics Forum | Thu Mar 29 07:22:13 EDT 2007 | davef
This does not seem to be a sales pitch. It seems like Mr Johnson was trolling the web and came across a SMTnet Archival posting on the pointlessness of burning product life doing HASS and wanted to engage a conversation on his issue with that commen
Electronics Forum | Thu Mar 29 13:29:08 EDT 2007 | JD
Ewwww metal mini stencils? Try http://www.circuitmedic.com/products/stencils.shtml We use their flextac stencils all the time and they work perfect. You can get a couple uses out of each of them if youre careful too. Just line it up under a scope and
Electronics Forum | Thu Mar 29 14:46:16 EDT 2007 | jmelson
Oh, I should have been more specific on microscopes. I have a Bausch & Lomb StereoZoom 5 and an old Olympus. They both work pretty well. I think the Olympus has a little better depth of field, but the B&L has better contrast. (Maybe the Olympus j
Electronics Forum | Fri Mar 30 08:46:53 EDT 2007 | electronhose
I just purchased some PACE ST-25 systems for basic soldering and they work great. It was a deal at $155 each and they heat up FAST! Tips are around $6 each so the whole system is affordable. A step up for rework jobs would be the Metcal MX systems.
Electronics Forum | Tue Apr 03 17:13:33 EDT 2007 | kmorris
Just wanted to do a poll to see how others are determining their test time for Ionic testing. Test Method IPC-TM-650 number 2.3.25, section 5.3.3, says "The test time should be in accordance with the monitoring plan criteria (set time or auto-shutof