Electronics Forum | Fri Dec 02 18:37:46 EST 2005 | Ola
What is the quality worth to You? How much is "to much" for You to spend on a good quality ckeck? How much benefit can You get in return, If You in the first place get the processes straight? These are the main questions that You have to answer Yours
Electronics Forum | Thu Apr 27 10:26:41 EDT 2000 | Ron Costa
Hello all! I am looking for an xray machine that can show me an open BGA solder joint. Does anybody have any experience with different type machines? I have used Nicolet model NXR 1400i.It's good at showing shorts but it cannot show me an open. Any
Electronics Forum | Mon Nov 13 08:20:06 EST 2000 | Peter Loten
I agree with all the previous comments. You need an XRay system with good software capabilities to "clean up" the images, but you also need to interperate the results and training/experience comes into this. Get free trials first on a machine like CR
Electronics Forum | Tue Dec 06 15:27:36 EST 2005 | Mike
Steve, You are correct in that X-Ray image of a BGA will not show flux residue. So what? If you are using no clean flux then I would think it doesn't matter if there is some flux residue. Sure if you are reworking a BGA and the operator dumps t
Electronics Forum | Wed Mar 14 14:03:19 EST 2001 | mzaboogie
Hello, I have been told to look for open BGA connections, the open ball would appear larger than the others due to the fact that it has not columnized. I have also been told that it will look smaller due to the fact that it has not collapsed. Could
Electronics Forum | Thu Apr 27 15:26:02 EDT 2000 | D Scott
Ron, I too use a Nicolet NXR 1400i. By using the rotation fixture and offsetting the board, a good BGA solder joint will appear elongated. If you rotate the board away from you the wetted joint will appear to lighten and become flat (looking at the
Electronics Forum | Thu Dec 08 08:12:03 EST 2005 | grantp
Hi, That's my thoughts, and I just don't know what looking at the component will do for the process. I did not know anyone used anything other than no clean flux these days. If you have the money, then the scope would be fun, but my main point is
Electronics Forum | Wed Mar 14 17:11:57 EST 2001 | davef
First, x-ray inspection machines have a wide range of capilities. Resolution is a key measure of a machine's ability to "distinguish" features. People say that some x-ray inspection machines have the ability to position the board being inspected at
Electronics Forum | Wed Mar 14 16:30:02 EST 2001 | CAL
Reading x-rays is an art. All balls should be symmetrical in size and shape. Please provide more information on your question. Why just opens? If the Balls are not consistently the same in size or shape there is a problem. Larger balls could be from
Electronics Forum | Thu Apr 27 21:20:38 EDT 2000 | Dean
Here are some pointers to use during your X-ray inspection. Microcracking is virtually impossible to determine with X-ray. However, I suspect you are looking for "hard" opens. Those are much easier to find visually. If using a paste-and-place pro
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