Electronics Forum: engineering (Page 201 of 261)

Re: polyimide stencils

Electronics Forum | Fri Nov 13 12:08:46 EST 1998 | fraser

| | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | Fraser- | | | | We use polyimide stencils with great success for our prototype boards. They are cheaper and the acc

Re: polyimide stencils

Electronics Forum | Fri Nov 13 14:43:36 EST 1998 | Dave F

| | | | I keep hearing about polyimide stencils, but what are they like in terms of registration and aperture accuracy? | | | | | | | Fraser- | | | | | | We use polyimide stencils with great success for our prototype boards. They are cheaper a

Re: Wave Solder balls

Electronics Forum | Mon Nov 02 13:24:18 EST 1998 | Ryan Jennens

| Well my process is I'm running my belt speed at 3.50fpm and about 215 to 225 degrees top side. I got my main wave down to a little less than half the board thickness. I'm not using a hot air knife cause we thought it might create more of a problem

Re: Reflow Profilers

Electronics Forum | Mon Oct 26 15:59:38 EST 1998 | carlm

| What are the key feature to look for in buying a profiling product for Reflow ? | | Who's is the best and how much do these systems cost ? | | Thanks in advance. | | Hi Mark, I am currently the oven sector engineer for a large CM. I spend a lo

Re: Reflow Profilers

Electronics Forum | Tue Oct 27 04:19:40 EST 1998 | Mark

| | | | What are the key feature to look for in buying a profiling product for Reflow ? | | | | | | Who's is the best and how much do these systems cost ? | | | | | | Thanks in advance. | | | | | | Hi Mark, | | | | I am currently the oven secto

Re: Spray Fluxer Suppliers

Electronics Forum | Fri Oct 16 09:00:47 EDT 1998 | Chrys

| I am trying to find information for one of our engineers on spray fluxing equipment. Years ago, I investigated these somewhat and now remember two suppliers -- Sonotek and AT&T. | | I was able to find information on Sonotek (http://www.sono-tek.c

Re: Vibration Tester

Electronics Forum | Wed Oct 07 21:51:59 EDT 1998 | Dave F

| Hi all. | | I am looking for a "viberation testing machine" for the assembled PCB . Any advise / thoughts from anybody?? | | Rgds | Upinder | ============ | Upinder: So what are you going to do with this equipment? 1 Design verification. LR

Re: Vibration Tester

Electronics Forum | Fri Oct 09 00:13:33 EDT 1998 | Pete Sorenson

| 2 Product reliability testing. Certainly you wouldn't shake your product to be shipped to customers, but running reliabilty tests, including shake and burn-in testing, are a good way to maintain the relaility of your product. We modified paint s

Re: Mylar to Gerber

Electronics Forum | Mon Oct 05 13:58:20 EDT 1998 | Dave F

| Anyone know of someone who can convert mylar top layer board data to Gerber data? We have some old designs that all other data is now lost. | Jerry: You could tape the mylars to a digitizer pad and enter the layout into your PCB layout program o

Need help with no-clean specs

Electronics Forum | Wed Sep 30 13:42:56 EDT 1998 | Chrys

Hello, I've been evaluating a bunch of wave solder fluxes and found one that is absolutely perfect. I'm so excited I can't wait to switch over. Unfortunately, I have to assure reliability, and the only test I have in-house is ionic contamination


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