Electronics Forum | Wed Aug 06 04:11:56 EDT 2008 | chrispy1963
GR@ICS, can you be more specific about your up in the Ersa machine please? Nozzle size, pump rate (%), and is your machine equipped with monitors on the solder pots? We have the same machine it sounds like, however we run Pb-Free in both pots. I
Electronics Forum | Mon Aug 18 13:46:09 EDT 2008 | realchunks
Tolerance stack up has really become an interesting issue with boards coming from China. What has usually been taken for granted has to be looked into with a fine tooth comb. Most board houses of the past would reject this - but China figures "If i
Electronics Forum | Mon Aug 25 19:27:11 EDT 2008 | Mike Konrad
There are a number of �low cost� stencil cleaners available. I am a manufacturer of one but I'll list a variety and let the others provide editorial on which is best. Basically, there are three technologies, manual cleaning (solvents and wipes), ul
Electronics Forum | Wed Aug 27 14:19:40 EDT 2008 | grics
Have you given this information to your paste manufacturer???(Profile, Pics of defects?) The profile seems to look ok(without knowing paste info...) I think the ramprate looks a little aggressive but it could be the scaling of the profile and the i
Electronics Forum | Thu Sep 11 18:44:31 EDT 2008 | smt_guy
We have an Ionic Contamination Testing system but short of having a monitoring record for the chemical concentration. What we have is a monthly maintenance check of the concentration and annual check and calibration of the chemicals. We seldom use th
Electronics Forum | Tue Sep 16 16:41:27 EDT 2008 | ck_the_flip
Here are some guidelines that you can go by: http://smt.pennnet.com/display_article/260261/35/ARTCL/none/none/1/Choosing-a-Stencil/ http://www.emasiamag.com/article-669-stencildesignforleadfreesmtassembly-Asia.html My caveat is...I am merely actin
Electronics Forum | Mon Sep 22 17:51:00 EDT 2008 | snsmt
THe software i am using at my company is cad2cad. I uploaded a working program and i was able to see the program. I thought it would just be a bunch of x,y coordinates, but it is more confusing than i thought. Does anyone have any idea where i can st
Electronics Forum | Sat Nov 29 09:56:59 EST 2008 | blacksi27
What the other user was talking about is correct, converting it from gerber to machine cad. It is hard explaining programming SMT to a new user unless shown by another experience operator. I am also getting a topaz x pretty soon and I'll try to hel
Electronics Forum | Wed Oct 01 13:19:18 EDT 2008 | evtimov
I am also doing research on rework machines. for now I saw : Ersa - german http://www.ersa.de/en/produkte/smt_bga_rework/frame_smt_bga_rework.html DenOn- Japanese http://www.denondic.co.jp/en/products/rd500_2.html, Metcal http://www.metcal.com A
Electronics Forum | Fri Oct 17 14:26:39 EDT 2008 | hegemon
We use Mirtec MV-7s for post SMT inspection of solder joints as well. The artistry is in the program debug. We are very pleased with the solder inspections provided by these machines, and technology having advanced bit, most every AOI machine has t
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