Electronics Forum | Fri Sep 13 09:16:36 EDT 2002 | bmulcahy
Hi dave, Only back in the forum today to see your query so here goes (1) VIA ,PTH holes -- we found that because the amount of gold being plated is generally less that the amount of HASL that holes can be physically wider. This then (pacticularly o
Electronics Forum | Wed Nov 20 03:52:16 EST 2002 | iman
Hello, need help on intrusive reflow process, thanks in advance to the experts and general info sharing :) need some help to obtain answers, to following questions: 1) PCB is FR4, 1.6mm thick, 4 layers, what stencil thickness (stencil design guide
Electronics Forum | Thu Feb 27 11:05:49 EST 2003 | Chris
Hello, I am the manager of a Drafting department and don�t pretend to know too much about the SMT process. But I am the manager of a CAD designer so I am somewhat responsible for the following issue. So since no one else around here seems to have the
Electronics Forum | Thu Feb 27 11:46:47 EST 2003 | genny
We have struggled with this as well. Basically, we have a consistent rotation for all packages of the same type, but I don't think our rotation has anything to do with the actual rotation that the PnP equipment actually wants to see. I believe our
Electronics Forum | Mon Mar 03 14:48:11 EST 2003 | genny
I've never heard of a customer saying just 'we want decoupling caps'. Very interesting. In RF applications - frequencies 50MHz up into several GHz, the location of where they are put is just as important as what the value is. Decoupling caps are p
Electronics Forum | Tue Mar 04 11:47:58 EST 2003 | msivigny
Hello John, Your second statement is a little vague about the 16th card shutting down the line with the 2x240 QFPs misplaced... i'll try to interpret, assuming the cards are actual product, which I think they are, your 16th card failed because 2 out
Electronics Forum | Mon Mar 10 16:29:34 EST 2003 | kenBliss
You can call it anything you want. At the end of the day what matters is what you are able to produce in a given period, say 8 hours. How many components where placed during that time. Most engineers do not fully understand that there is generally
Electronics Forum | Sat Dec 20 23:13:14 EST 2003 | Dean
Hi Tommy. A clean printer has always been a hot button with me as-well. Solder paste is like a can of paint. As soon as you open it up you will get it on all the things you wanted to preserve as clean. The cleanliness and condition of your sten
Electronics Forum | Thu Mar 04 18:18:02 EST 2004 | Ken
There is a japanese company that makes a ultrasonic hand-held stencil cleaner. I demo'd it for a day and it was fantastic! It even cleaned epoxy stencils. Can't recall the price...but it should be much much less than the smart sonic and other "mac
Electronics Forum | Mon Mar 08 19:41:31 EST 2004 | Ken
Robert, what you have provided is not a "profile". It is a "recipe" or "job". I have 4 BTU VIP98's. I have hundreds of recipes...Your temps look similar to mine....but what does that have to do with the "thermal profile" as experienced by the asse