Electronics Forum: what is cob test (Page 1 of 5)

what is the different between ENIG and Immersion Au

Electronics Forum | Thu Jan 12 10:05:13 EST 2006 | davef

There's a lots comparisons like this on the web. Here's one: Westwood Associates said on 8/12/2003: ||HASL||OSP||ENIG||Pd||Tin||Silver Flat||no||yes||yes||yes||yes||yes Solderjoint||Cu-Sn||Cu-Sn||Ni-Sn||Ni-Sn||Cu-Sn||Cu-Sn Contact||E-test, ICT||no|

what is the max print speed? thanks for your help

Electronics Forum | Sat Nov 17 12:58:12 EST 2007 | mika

I agree with previous postings regarding print speed: Solder paste type/versus fine pitch. Question: Is this a double sided pcb with fairly easy component packages on both sides? In such case, consider make the panel like this: Every second pcb in

what software is out there that will extract XY centroid from gerber data?

Electronics Forum | Wed Jan 22 10:35:38 EST 2014 | unisoft

_a class=roll > href="http://www.graphicode.com/GC-PowerPlace" > target="_blank"_http://www.graphicode.com/GC-Power > Place _/a_this does, I had a dabble and while it > does seem quite capable the learning curve is > quite steep and I'd wager th

what software is out there that will extract XY centroid from gerber data?

Electronics Forum | Wed Feb 19 15:16:35 EST 2014 | jlawson

Gerber in general is not best data set for assembly, alot of processing has to be done, manually or via software tools, all with their nice features, but as you state there is no actual datum XY , pin 1 , rotation references thus has to be 'generated

how clean is clean?

Electronics Forum | Thu May 26 16:57:13 EDT 2005 | Sm Rookies

what test methods can be use to verify that the cleaning process for SMAs with water soluble paste is sufficient?

What is IST System?

Electronics Forum | Fri May 10 10:56:10 EDT 2002 | itempea

Are you sure it's not ICT=in-circuit test?

how clean is clean?

Electronics Forum | Fri May 27 17:21:35 EDT 2005 | mrclean

Dear SM Rookies, Another acceptable test method is visual inspection. IPC-A-610 details what to look for with different contaminants, providing magnified pictures of the possible visual residues. With an existing cleaning process, magnification

Re: Prove no-clean is clean

Electronics Forum | Thu Sep 17 12:08:13 EDT 1998 | Graham Naisbitt

Wayne, I think Dave and Justin are correct but I would just add my twopennworth: Your customer presumably wants to know if the end-product will be reliable? If he/she wants you to prove cleanliness, ask them for the spec they want to work to and app

Re: Prove no-clean is clean

Electronics Forum | Thu Sep 17 10:30:22 EDT 1998 | Justin Medernach

| I need an evaluation process to prove to a customer that our no-clean process does not leave excessive residue? Any ideas? Wayne, Find out your customer's concern about the residue. Residue can be a pretty ambiguous term. Is their concern activi

Cleaning procedure when WS609 flux is used

Electronics Forum | Mon Jan 21 11:12:20 EST 2008 | davef

Just what is delaminationg during testing? Water washing should be sufficient to clean WS609. On the other hand, it's possible you're conveyor speed is too high to do a good job cleaning the high density areas. What kind of testing have you done to

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