Electronics Forum: does (Page 598 of 882)

Re: Solder Wetting

Electronics Forum | Tue Dec 14 17:02:04 EST 1999 | John Thorup

Hello Kris If you do have and OSP coating I'd say Curtis has nailed it. But you seem to have references to gold. Does this board have a standard nickle/gold finish. If so what sort of "solder on gold" problems were you having? Reading between the

Re: Poor solder joints on QFP 100's

Electronics Forum | Thu Dec 16 16:46:47 EST 1999 | Mike Naddra

Steve , I use a general set of guidlines when developing reflow profiles: Ramp rate to 140 deg C - 50-60 seconds Time at preheat (140-160 deg C) - 90-120 sec Time above liquidous (183 deg C) - 45-90 sec Time at peak (215-225 deg C) - 9-12 sec peak t

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: Missalingment 0402 Capasitor by Vision on TCM1000

Electronics Forum | Fri Oct 01 06:45:36 EDT 1999 | JAX

| Hi, | | We are running 0402 component on the TCM1000 and we find that teher will be missalignment on 0402 Capositor. We have identified that the missalignment is caused by the wrong information from the vision system while doing vision centering.

Re: Missalingment 0402 Capasitor by Vision on TCM1000

Electronics Forum | Fri Oct 01 07:25:05 EDT 1999 | Wolfgang Busko

| | Hi, | | | | We are running 0402 component on the TCM1000 and we find that teher will be missalignment on 0402 Capositor. We have identified that the missalignment is caused by the wrong information from the vision system while doing vision cente

Re: IR Versus Hot Air - Put-Up Your Dukes...........Not a lot of blood guys!!!

Electronics Forum | Tue Sep 28 12:58:19 EDT 1999 | Jeff Sanchez

I finaly get a vacation and decide to go to the forum and low and behold it's hot air verses a small ray of sun.I read every thread and still failed to see any real argument either way? I love rework as an assembler. I hate rework as a shop owner. Th

Re: Siemens S20 Hang Issue

Electronics Forum | Sat Sep 18 02:57:09 EDT 1999 | bach huss

| | Hi All, | | | | I am running 19 Siemens S20 Machine here. I found out that the Siemens Machine once a while hangs. The remedy is reboot the machine. I wonder what is the machine hang rate for other S20 machine else where. | | | | Can anyone giv

Re: Pick Place Change-overs, strengths, ages

Electronics Forum | Thu Sep 16 21:28:44 EDT 1999 | JAX

| I have a number of hopefully easy questions: | | 1. Are there significant differences in the ease of change-overs and set-up among different equipment manufacturers? For example, are Siemens Siplace machines truly more modular than others?

Re: Pick Place Change-overs, strengths, ages

Electronics Forum | Fri Sep 17 11:16:11 EDT 1999 | Scott S. Snider

| I have a number of hopefully easy questions: | | 1. Are there significant differences in the ease of change-overs and set-up among different equipment manufacturers? For example, are Siemens Siplace machines truly more modular than others? There

Re: Camelot Glue Dispenser Off-line Programming

Electronics Forum | Wed Sep 15 16:32:29 EDT 1999 | Dave F

| Does anyone know the best way to program my Camelot glue dispenser off line? I really like the machine, it just takes me too long to program it. We do contract work so I can get gerber data for all (most) of my assemblies. I need to get these pro


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