Electronics Forum | Thu Mar 02 09:23:05 EST 2006 | Bob R.
I never understood the statement "process indicator". The 7095 committee used that wording but didn't explain it. Other than really unusual cases such as champagne voiding, BGA voids are not a reliability issue. A half dozen studies have come to t
Electronics Forum | Mon Sep 11 14:58:16 EDT 2006 | cuculi54986@yahoo.com
Steve, Let me guess, you were using this one: http://www.panasonic.com/industrial/components/pdf/abd0000ce10.pdf That part sucks. They have a newer part number that is supposedly "reflow-friendly". Unfortunately, I can't convince our quality de
Electronics Forum | Thu Apr 12 10:01:43 EDT 2007 | realchunks
Hi aj, Pete is right, there are several variables that can affect your quality when it comes to stencil design. A good idea is to have a stencil made with various designs incorporated into it. A lot of engineers like the reverse homeplate design.
Electronics Forum | Wed Jul 25 11:55:21 EDT 2007 | ck_the_flip
Zoinks!! Doing the homeplate design on 0402 will actually make your tombstones WORSE! Think about it. Your wetting forces are now on the ENDS of the device with no solder paste toward the middle of the device to tack the part down - a gauranteed f
Electronics Forum | Wed Feb 20 09:07:19 EST 2008 | scottp
I've done some pretty scary cross-sections of chip sized coils with AgPd terminations with Pb free solder. The AgPd went into solution and there was essentially nothing left to solder to. We also had convex fillet shapes that clearly didn't meet wo
Electronics Forum | Thu Feb 21 03:25:58 EST 2008 | jlawson
I have seen smt chip varistors with Pd/Ag teminations that had poor wetting in terms of good fillet in LF (sac305) soldering. We found that the solder tended to be attracted to the plating on the part and off the actual pad (silver Immersion). This c
Electronics Forum | Thu Aug 21 14:38:32 EDT 2008 | Paul M.
I have had a similar problem as this. But, not on that particular type of component. Have your machine place the component, take the PCB over to a microscope and look at the part how it sit's on and in the paste on the pads. You might see that one
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 | Sun Mar 20 12:58:23 EDT 2011 | sellenzz
We have a Nitrogen Silo. Your going to want to be careful if you decide to use nitrogen, not only are the levels unstable most of the time but it can also cause your components to tombstone like crazy, especially if you run a lot of LED's. We run 24/
Electronics Forum | Fri Apr 08 06:12:06 EDT 2011 | don7888
Thanks Reese. To be honest I don't know a great deal about the software just yet but we are running version 2.7.4. I know the guys are saying that they have a problem with identifying small capacitors and resistors as these have no markings though t
