Electronics Forum: defect (Page 175 of 227)

Quality control in manufacturing

Electronics Forum | Fri Sep 02 19:31:40 EDT 2011 | jlawson

I agree that if information is processed correctly up front in process down stream QA becomes less expensive ie AOI etc as AOI at end of lines is telling you you have made mistakes in up stream. I better to eliminate mistakes or have process to avoid

Soldering Specification Needed

Electronics Forum | Fri Sep 23 10:28:43 EDT 2011 | minda

A big customer for controller cards is complaining about the quality of the soldering on our PCBs. The photographs they sent were very unreasonable, pointing out minor defects such as tiny (tiny as in smaller than the point of a pin) drips of solder

Soldering Specification Needed

Electronics Forum | Mon Sep 26 12:58:33 EDT 2011 | action_101

So you are saying that building to class III is going to prevent failures? I disagree. Class III is trying to hit target condition in every aspect of the production of the circuit board. That my friend does not ensure failures from happening. I see

inline AOI (whats the best!)

Electronics Forum | Wed Dec 07 08:57:19 EST 2011 | edmaya33

5K with perform Head is amazing.You just need to make sure that during debug mode, the score should be 90%. Polarity, position, bridge, flip/tombstone/billboard, present/absent and solder condition ( and even OCR/OCV )is remarkable. Acceptance level

Attrition... how to measure it?

Electronics Forum | Fri Jan 20 12:46:21 EST 2012 | deanm

If 3-5% of the attempted parts placed are dropped, you have a serious problem...that's 1 part dropped for every 20 or 30 placements. Does it mean that it drops the part in the scrap bin and then successfully places the same part or would the board co

new OMRON VT-RNS-pt PCB Inspection

Electronics Forum | Sat Apr 21 07:05:32 EDT 2012 | doremi

Hello sergio, Probably it is too late to answer to your question, but I can not withstand to say some good words about Omron AOI. I'm located in Europe, 6 years ago our company wanted to make some Japanese manufacturers like Mazda & Toyota our client

A 5S organized work space

Electronics Forum | Thu Apr 19 20:14:09 EDT 2012 | eadthem

I don't, My desk causally is piled with papers, programming printouts, PCB's with defects to be resolved, and spare/broken parts from the SMT machines. For me its more important to help the SMT department and SMT Inspection department get better or

Machine AOI

Electronics Forum | Wed May 09 05:54:51 EDT 2012 | pvasquez

Hello thomas31, When we did our equipment evaluation, we looked at all of these systems with the exception of Goepel. My team and I thought that the image quality of the Mirtec machine was by far the best of any of the other vendors. We also found t

Machine AOI

Electronics Forum | Wed May 23 08:39:37 EDT 2012 | tony_d

Thomas, We evaluated several AOI machines and narrowed the field to two, YESTech and MIRTEC. We had an opportunity to work with both of these machines on our production floor. In our experience, the MIRTEC machine simply outperformed the competitive

How to define solder paste printing height tolerance

Electronics Forum | Mon May 07 16:07:05 EDT 2012 | davef

Start with targets based on the stencil thickness (for height) and stencil thickness times the aperture size (for volume). * Set reasonable upper and lower control limits (+ 25% and –25 % of the targets, for example). * Next, check the printer set-u


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