Electronics Forum: electronics (Page 7286 of 7890)

Re: Siemens

Electronics Forum | Fri Nov 05 17:17:32 EST 1999 | NickMata

Fred, The system will base itself on the information within the GF file. In the GF file you provide the description as to the physical dimensions, features, tolerances and handling for the part. Once the component has picked up the image, it is "see

Re: flow thru

Electronics Forum | Tue Nov 02 17:52:17 EST 1999 | Dave F

Jim: Several points: 1 If you�re correct about corrosion of your component leads (which is entirely possible if the leads are steel, as you say), then the AIM 264-5 no-clean may not be aggressive enough to remove the corrosion you are seeing routin

Re: Polarity of parts in packages

Electronics Forum | Thu Oct 28 23:45:23 EDT 1999 | DGrenier

JC: Seen this before, many times. We fixed our problems at the co I work for by giving a packaging specification to our purchasing dept. Took some work but the payoff was pretty big. This document includes such things as orientation,pitch,tape type

Re: ESD mats

Electronics Forum | Wed Oct 27 17:27:58 EDT 1999 | John Thorup

well... it might be cheaper. But I think it's a bad idea. First, your operators will hate you by the end of the day with their sore feet, not to mention lost productivity. Second, safety. Even if the plates are connected to ground through a resistor

Re: ESD mats

Electronics Forum | Wed Oct 27 22:58:56 EDT 1999 | Jeff Sanchez

Hany, John is right! How do I know cause I have a metal wire floor. I was faced with the same problem you are faced with now and the price was up there. I had one advantage, My floors where raised wood when we got the shop. This reduced the fati

Re: Coplanarity Measurement Machine

Electronics Forum | Wed Oct 27 07:38:08 EDT 1999 | Mario

Hi Jerry, I have a solution for you which I have done myself and shown to others which should cost you less than 100$ if you already have a microscope.This is still an operator job and an automated operation. You need two mirror squares (about 4inc

Gold Immersion - Soft Joints

Electronics Forum | Mon Oct 25 14:48:29 EDT 1999 | William

All, I am having a problem with joints being soft after SMT. Especially 25 mil and smaller parts. It seems as though you can slide the leads right off of the solder. It takes only about 30-40 oz. of compression at 45 deg. to move leads off of join

Re: Gold Immersion - Soft Joints

Electronics Forum | Mon Nov 01 11:07:36 EST 1999 | William

Thank you so much Dave for all of your wonderful help. You know, all I really wanted to know was a little more about the gold porosity problem. Since I am not an expert on gold immersion, nor do I claim to be, I just wanted some information so that

Re: DOUBLE SIDED SMT ASSY

Electronics Forum | Wed Oct 27 16:55:38 EDT 1999 | Joe Herz

Jerry, In our house we generally run a glue bottom last but people do it both ways. Our logic revolves around protecting components from being knocked off the board during handling and processing prior to wave solder (this is most important with sm

Re: moisture in pcb's how is it measured

Electronics Forum | Tue Oct 19 22:43:31 EDT 1999 | Stu Leech

We are deeply involved with this question because we have developed a much faster way to remove moisture from PCB's. PCB's absorb varying amounts of moisture at differing rates. The rate is influenced by the laminate type board configuration , loca


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