Electronics Forum | Thu May 30 11:37:27 EDT 2002 | Ron Costa
Hi Ray, A couple of things to look into: 1.date code of reel 2. what is the termination made up of tin/lead or tin/lead/palladium. Check with part manufacturer. 3.paste volume/aperture openings 4.PCB plating 5.solder paste formulation Good luck R
Electronics Forum | Wed Mar 26 19:11:52 EST 2003 | russ
Tell us more about your printer. squegge blade type ,speed, snap-off distance etc... You shouldn't have to change apertures for any component based upon its rotation. the parts that are coming out good could they withstand a higher volume print? You
Electronics Forum | Mon Jan 18 14:01:47 EST 2010 | cl
Good Afternoon, Is this by chance a Pb BGA on a RoHS board? We had an issue with a Pb BGA on a RoHS board where we experienced "ball drop" on the Pb BGA. This was due to the heat required to reflow the RoHS paste. It was more than the Pb BGA could
Electronics Forum | Tue Jan 19 09:45:06 EST 2010 | pcbrookie
You nailed it. After some further investigation, it appears we had some old Pb version of this part that never got scrapped. Corrective action has been taken, and all the Pb parts have been disposed of. It makes sense that this would happen to the
Electronics Forum | Tue Apr 11 20:31:54 EDT 2000 | Dave F
Russ: You�re correct. I should have explained our reasons for preferring concave over convex better. First, we use both also ... we just prefer concave because they: * Don�t bridge any where near as easily. * Self-center better. * Seem to have mor
Electronics Forum | Mon Jun 07 22:30:28 EDT 1999 | Dave F
| | | I was wondering what measurements are used to define pitch? | | | | | Frank: John's correct with the most common definition, but there can be others, depending on your perspective. TTYL Dave F | | | | Pitch. The center-to-center spacing b
Electronics Forum | Tue Oct 24 11:26:03 EDT 2006 | geb
Hi, I've had some trouble with one of my GSM cameras. Its a 1 mil camera (in circular housing). Some components have fallen down the gap between the glass cover and the LED array closest to the rails. One of the resistors (closest to the left) has b
Electronics Forum | Wed May 29 19:00:08 EDT 2002 | russ
Have been seeing a pretty fair amount ourselfs. it seems to come and go. Couple of questions 1. Are the parts shifting to one side during reflow? 2. is it true non wetting to the component? I have been experimenting with different pad geometries a
Electronics Forum | Mon May 19 09:29:59 EDT 2003 | bradlanger
Dave, We are using Kester Easy Profile 256 No clean Sn62Pb36Ag02. The oven itself is a Dima SMRO-0252 which is a short oven, it has 13" of preheat, 13.5" of soak, 6.25" of reflow, and 10" of cooling on the way out of the oven. We are soldering multi
Electronics Forum | Fri Jul 15 14:16:09 EDT 2005 | seaK
We have this problem for a long time. It happens to 3 new Mydata MY-9 machine. When pick and place resistor array 0408 (different value, top and bottom side), the solder paste in the middle two terminals missing occasionally. Thought it's because noz
