Electronics Forum | Fri Aug 20 03:19:22 EDT 1999 | PeterB
| | | | | | One of the DFM suggestions I've seen is to remove the solder mask web, i.e. the mask between pads on 20-mil QFP devices. The rational is that if the mask is thicker than the pad the mask can prevent the stencil from making intimate conta
Electronics Forum | Mon Aug 09 14:58:33 EDT 1999 | Earl Moon
| | Earl, why don't you post this ALSO in the "Mart". Is there a reason? | | | | | | | | | | | Folks, | | | | | | | | | | Probably not the forum, but forgive me as I am but a dog as described by Justin and admitted by me. However, I am looking fo
Electronics Forum | Thu Jul 29 15:35:05 EDT 1999 | Earl Moon
| | While inspecting incoming PCBs we detected around all plated-through-holes (only there and all in the same place) some halfmoonshaped light rings that match obviously only with the pink ring symptom shown in the IPC-A-600 chapter 2.5.2.. That wou
Electronics Forum | Wed Dec 23 11:42:46 EST 1998 | Earl Moon
| | Folk's, | | I'm in need of some help / direction. I'm working on my thesis for a masters based on looking at the effect's of the solder resist promoting / reducing the amount of solder ball's during wave. I'm looking at thing's like colour, text
Electronics Forum | Tue Aug 11 07:51:57 EDT 1998 | Earl Moon
| | | | Is there any problem using SMT on gold boards? 15 years ago we were told not to use gold boards, but I can't remember why. Judging by the other postings it now appears to be common. Only problem I see is that the nickel should be plated, n
Electronics Forum | Thu Feb 24 21:44:27 EST 2000 | Dave F
Horace: Area you in the rainy or the dry portion of the South? ;-) Now, excuse me from mincing words with you ;-) �, but buying a manufacturing software package is a serious (expensive) endeavor that will leave no part of your company unscathed. I�d
Electronics Forum | Thu Feb 10 22:55:50 EST 2000 | Dave F
Fred: I'm tryin' my darndest to be good, because, for whatever stupid reason, I feel that you're making an honest inquiry and not just floating something to find the biggest sucker. If only Earl was still here, he'd always bite on stuff like this.
Electronics Forum | Thu May 18 21:46:21 EDT 2000 | Dave F
Scott: First, it's neat that you do cartridge monitoring on you staff. We do that once a year. We (and I assume others) are responding to OSHA requirements: Lead CFR 1910.1025 permissible exposure limits for lead, provisions for medical examinati
Electronics Forum | Thu Apr 13 20:18:14 EDT 2000 | Dave F
Pete: What�s a "free issue PCB panel"? Is that like "consigned material" here in the states? In response to your question, several possible approaches (in no particular order): 1 Router approach: 1a Wood working router * Go over to Sears and buy a
Electronics Forum | Mon Apr 10 22:32:14 EDT 2000 | Dave F
Mark: If you're looking for a baseline document for judging the acceptability of: * Mechanical assembly * Component installation * Soldering * Cleanliness * Marking * Coating * Laminate condition * Discrete wiring * Surface mounting of components .
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