Electronics Forum | Tue Feb 04 15:45:16 EST 2003 | adlsmt
If you are physically breaking the boards apart and not using a depanelizer you will always have this problem. I have a machine shop that can make you one for about $3,000.00. You can buy one for around $5K new. Cab,FKN and some others make them. Be
Electronics Forum | Thu Jul 17 04:42:47 EDT 2003 | sanjeevc
Hi! One technique: 1. Remove all balls 2.Make > a mask(stensil)for reballing.The holes of the > mask must be 0.8-0.9 the size of the pads. 3. > Reball chips 4. Reflow chips Good luck Hi Yes,we have done quite a bit of reballing of BGAs with
Electronics Forum | Wed Feb 11 05:48:10 EST 2004 | iva
Hello Greg, Have you ever seen an Essemtec in a real production run? I have. But actually placing BGA, MicroBGA with their Cyber optics laser alignment? Or with the supplementary camera (I think it was with a VGA resolution)? Well, that�s something
Electronics Forum | Fri Mar 12 11:53:47 EST 2004 | Dreamsniper
Thanks Dave...it's such a good site for reworking BGA's (reballing). But what about when it comes to re-attaching the BGA onto the PCB? We are using Flextac Stencils but I found out that the apertures of their stencil is bigger than our pads for the
Electronics Forum | Thu Apr 01 12:31:39 EST 2004 | russ
one more thought on this, When these boards are built new do we not have solder paste on the ground pad and then reflow? Has this caused any misregistration for you? I am assuming that you are not pasting the leads with the ground pad correct? I
Electronics Forum | Fri Apr 16 15:25:01 EDT 2004 | ianlg
Hi Debi You might like to also include the R29-V which is a step up from both the Dek 248 and Microflex but at a similar price. 29" frame size ( multi-purpose adp available ) Bespoke software windows based, Incredibly easy to operate. Similar toolin
Electronics Forum | Thu Feb 10 09:09:30 EST 2005 | russ
99% (there will always be that one that gets jacked somehow). Your old placement equipmment may affect this by dropped parts that get underneath the BGA, etc.. hopefully the placement accuracy will at least get the parts halfway on pad and they will
Electronics Forum | Fri Feb 18 22:32:27 EST 2005 | pd not cruel
I�m surprised how un professional the so-called experts can be. After all we all had our start sometime and if you can never remember asking a un qualified question in your entire career then you probably have a bad memory. This is an open forum for
Electronics Forum | Mon Feb 21 16:06:10 EST 2005 | MR
I agree w/ JB; the package height definition is crucial. I have had problems w/ this in the past, and found that a resistor height was being used as a universal passive height for the capacitor in question. Properly defining the height fixed the pro
Electronics Forum | Wed Feb 23 14:17:21 EST 2005 | scombs
We also have 4796's and 4791's and have had the same issues with 0402 parts.. All the suggestions listed in the last post will help quite a bit. We found our biggest problem was the board supports due to the operators using the wrong type of pins ,
