Electronics Forum: general (Page 1 of 151)

X-Ray machines general questions

Electronics Forum | Thu Aug 05 10:51:27 EDT 2010 | floydf

Can anyone give me some insight into what to look for on a used X-Ray machine. Or just any thoughts on using X-Ray inspection. We are getting more and more QFNs and our inspection seems a little subjective. Thanks.

X-Ray machines general questions

Electronics Forum | Thu Aug 05 14:58:18 EDT 2010 | mikesewell

Smaller and multi-row QFNs will probably require an oblique view/5-axis xray with resolution of at least 1 micrometer and preferably a nanofocus machine. Given the low standoff and small pad size, verifying wetting can be challenging on interior pad

Is there some general file format for chip placement on pcb

Electronics Forum | Mon Nov 17 08:01:44 EST 2003 | stefwitt

The format is X,Y Theta of the component center for all placement machines. Gerber data can be useless, unless you have the reference from pin 1 to the component center. Some machines offer a CAD convertion tool. I don't know any machine, which can

Is there some general file format for chip placement on pcb

Electronics Forum | Fri Nov 07 09:34:31 EST 2003 | Rodion

Hello, I am writing a software that deals with chip placement on PCB and I would like to know if there is some standart way to describe what are the coordinates of the chips on the pcb, I know that Gerber file contains all the drill holes and tracks,

Is there some general file format for chip placement on pcb

Electronics Forum | Thu Nov 27 02:52:33 EST 2003 | Giordano Trecca

I'm using a CIM software (http://www.aiscorp.com/products_npi_circuitcam.htm) to import gerber files and produce pick&place programs and paper/paperless documentation. It's very friendly, useful and fast, but not cheap. I don't know any other softwa

Touch-up and Inspection Process

Electronics Forum | Thu Mar 03 11:23:50 EST 2005 | Slow Ride

Generally QC is a different deptpartment than touch-up people. Most touch-up people are just general operators, so to keep their job they always see the solder joint as "not enough". Q.C. people are generally a bit better, but know they may be call

Samsung vs. Mydata

Electronics Forum | Wed Nov 24 07:58:14 EST 2010 | rgduval

I have used MyData's in two different companies, and have never used the Samsung machines. MyData's flexibility is, generally, key. The feeder designs allow for short strips to be loaded, as well as rapid change-over. The electrical testing capabi

General SMT Question

Electronics Forum | wavemasterlarry |

Mon Nov 24 15:42:05 EST 2008

Conductive filled Vias on BGA

Electronics Forum | Wed Nov 30 22:25:03 EST 2005 | davef

The authors of this article might get you started http://www.protoengineering.com/documents/viaplug.pdf Other information is: * http://www.dupont.com/pcm/techinfo/general/general9.html *

BGA Soldering

Electronics Forum | Mon Nov 01 11:29:30 EST 2004 | davef

There is no IPC requirement for reworking BGA with either paste or just flux. While we generally use flux only, general consensus is that both methods work equally well. Adding solder paste, while more difficult, should result in larger package stand

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