Electronics Forum | Sat May 27 11:13:27 EDT 2000 | Steve Thomas
Subject line pretty much says it all. We're going to try some stencil design changes to reduce midship solder balls. Anyone have some comments on pros or cons for either?
Electronics Forum | Sat May 27 12:50:21 EDT 2000 | Micah Newcomb
Steve, I use homebase apertures as a standard for all chip parts and have no complaints, no solder beading, no issues. I have had to replace almost all stencils ordered previous to my arrival as they all caused defects (7-9mil thickness and 1:1
Electronics Forum | Sun May 28 08:21:52 EDT 2000 | Sal
Can't agree more than moving over to Homebase apertures, But ensure that the cut back angle is correct,to acute of and angle will leave you with an inadequate contact area fot the terminations on the chip components and you will start seeing insuffic
Electronics Forum | Tue Oct 10 12:56:15 EDT 2000 | Ken Van ZIll
I agree that homplate is a good design, but also this could be caused by the stencil thickness and aperture size, if you are at 7-9 mils thick stencil and a 1:1 ratio on aperture size then 2 things i know of will happen, one a squishing out of past o
Electronics Forum | Mon Jun 28 13:41:19 EDT 1999 | mike weekes
I am looking to buy either a GenRad TestStation 80 or a HP 3170 test station. GenRad has matched HPs price, but I'm concerned about the HP UNIX vs GenRad NT base - any input on your choice and service, support, cost, issues, satisfaction - email me
Electronics Forum | Thu Dec 06 20:35:14 EST 2007 | davef
First, let us pause for a moment, bow our heads, and say a small prayer for Ill. Second, the only thing that is absolutely necessary is to do some things that make your customer feel that you're smart and did a comprehensive job of assessing your ne
Electronics Forum | Fri Jun 19 07:28:56 EDT 2009 | mhunter
Thank you for your responses Davef and Boardhouse. The material used is Iteq Corporation IT-180. I performed more testing yesterday and found the following: I could insert Berg Pins into the assembly at various locations or a Pem. None of these
Electronics Forum | Mon Nov 01 17:27:07 EST 2004 | Dreamsniper
Hi davef, Will the ion chromatography be able to quantify then identify where and what the contaminant is? Is this a destructive type of testing or the PCB will remain intact right after the test? thanks for the inputs. dreamy
Electronics Forum | Mon Nov 01 19:50:29 EST 2004 | davef
Q1: Will the ion chromatography be able to identify and quantify the contaminant? A1: Yes, it will identify and quantify the amount of contaminant. Obviously this is very useful in troubleshooting the source of the contaminant. [The only problem fo
Electronics Forum | Mon Nov 08 15:17:35 EST 2004 | caldon
The EMPF published a nice article, now old but relative, to Cleanliness. www.empf.org Under Technical Docs The listing is ... RR0013 - An In-Depth Look at Ionic Cleanliness Testing - August 1993. Cal
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