Electronics Forum | Thu Aug 15 15:44:46 EDT 2002 | dragonslayr
You can't control what you don't measure. You have provided very little detail other than post reflow costs are high. What defects are attributed to problems experienced prior to reflow? Are these random or recurring defects? You will need to put ea
Electronics Forum | Thu Aug 10 13:26:02 EDT 2017 | dleeper
In my past life, I worked at a CM that used Mirae "Meridian" machines Universal Instruments "Genesis" machines. The universal instruments machines were much, much faster. What sort of head configuration did your Advantis machines have? The 30 spindl
Electronics Forum | Fri Dec 07 15:12:56 EST 2007 | teodor
Hello , I would like to collect your valued opinions what is better for beggining . Samsung CP-45NEO Juki 2060 Light Feeder Positions (8 mm) 104 80 PCB Size (min - max) 50x30-460x400 mm 50x30-410x360 m
Electronics Forum | Wed Jul 21 20:52:52 EDT 1999 | Scott
| | I have pcb's in which i am experiencing warping. | | the boards are 12.8125" on a diagonal measurement. | | they are out approximatley .010". | | the boards are combination thru-hole,smt, they also have 3ounce copper.what is acceptable,and what i
Electronics Forum | Thu Jul 22 06:54:45 EDT 1999 | Earl Moon
| | | I have pcb's in which i am experiencing warping. | | | the boards are 12.8125" on a diagonal measurement. | | | they are out approximatley .010". | | | the boards are combination thru-hole,smt, they also have 3ounce copper.what is acceptable,an
Electronics Forum | Mon Sep 13 16:29:17 EDT 1999 | Earl Moon
| | Dearest Jennifer, | | | | Ooooops! Forgot which one I was writing - please forgive me. Ah yes, SMT and you, you see even we don't get it right. If you combined all our answers, you would get close - as close as when we get frustrated. | | | | A
Electronics Forum | Thu Jun 14 02:00:01 EDT 2001 | ianchan
Hi mate, AOI seems great for : 1) missing 2) wrong parts 3) wrong orientation 4) x-y axis misalignment 5) upside down placement 6) etc.....? AOI shucks for : 7) unsolder (joint) defect 8) tombstone / tilt My guys are evaluating AOI m/c, for substi
Electronics Forum | Tue Oct 17 01:42:34 EDT 2000 | Peter Carry
Dave, That's the funny thing, thru all that the output was pretty consistant with at least one bridge per board. * The ICs are going thru the wave in-line, according to IPC-782 figure 3-9, "Preferred IC Orientation". * Flatness of second wave is cont
Electronics Forum | Tue Jun 27 10:36:45 EDT 2000 | Bill Bannister
We've been experiencing solder balls on 0805 caps. We have modified the reflow profile and had some success, but some balling still persists. The balls always form from under the cap between the lands. I measured the distance between the lands at .03
Electronics Forum | Wed May 09 01:40:55 EDT 2001 | Dreamy
Hi Michael, DPMO Index calculation - The total number of defects (Dc + Dp + Dt) on a completed Printed Circuit Board divided by the total number of defect opportunities (Oc + Op + Ot) for that PBA multiplied by 1 million. Your calculation deals only
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