Electronics Forum: want (Page 171 of 662)

Problems with .45 mil ball diameter BGA....

Electronics Forum | Fri Apr 29 17:49:26 EDT 2005 | Woodsmt

I have used many of these devices recently and have used them several times over the last few years. I have been successful using a type 4 paste on a 5 mil stencil. The 13 mil round aperture should provide you with an area ratio just adequate for r

Universal Lightning head

Electronics Forum | Thu Oct 27 01:43:41 EDT 2005 | adlsmt

Do you have any advice on preventive maintanance? Universal does not call for much. We have the machine running now. It is incredible for a $150K machine. We have had no maint issues but I want to make sure it stays running the way it is. I have visi

Quad 1000, looking for opinion

Electronics Forum | Tue Nov 01 08:33:40 EST 2005 | bobpan

Dave, Dont mind Ken.....in the past he just hired the wrong ex-quad guy previously that couldnt get his machines working right......anyways.....if you want to keep the same feeders you would need a 2c or 4c....the centering should be a quad-align but

Need Advice on SMT Pick&Place Machines

Electronics Forum | Thu Nov 24 01:45:44 EST 2005 | pavel_murtishev

Good morning, My advice is to put two Topaz-Xii in line. Machine programming is rather easy (with PPS and GPP that AssemleOn offers), but final teaching on machine is strongly required. If you want to prepare programs fully offline you�ll have to pu

testing smt boards

Electronics Forum | Sat Dec 03 02:10:59 EST 2005 | Homer J

1. What are we talking about: pcb:s or pcba:s? 2. What exactly do you want to attain with this board test? 3. Are you a pcb manufactor or a pcba manufactor? 4. You did not mention what type of boards you want to test? 5. Mechanical, operating enviro

SMT line validation

Electronics Forum | Wed Feb 22 20:11:59 EST 2006 | slthomas

*Qualify* your equipment by running X boards, Y times, through each piece of equipment under normal operating conditions and quantifying the performance, as in a ppm rating. Then validate your process by defining all of the steps you use to generate

Tin Lead BGAs in leadfree paste

Electronics Forum | Mon Mar 13 10:45:44 EST 2006 | muse95

The original issue was Co. does not need to go Pbfree, but some BGA's they use are only available Pbfree. They don't want to throw away Pb BGA stock, so some boards might have a combination of both Pb and Pbfree BGAs. The question basically was Shou

SMT Assembly Line

Electronics Forum | Sun May 28 19:02:11 EDT 2006 | grantp

Hi, One thing, getting back to the original topic, is you might want to panelize these boards as much as possible, as you don't have too many components, but you have some good volume. So the machine changeover time is going to be an issue. Althoug

Need help for setting up an assembly line

Electronics Forum | Wed Jun 21 13:26:35 EDT 2006 | stepheniii

I don't know about the cost but I would recommend that if you buy a used Mydat, that you buy it from Mydata and not a used equipment dealer. Mydata very much wants to handle all sales of machines so they can make sure that the machines are still in

Help or nothing!?

Electronics Forum | Fri Jun 23 12:08:51 EDT 2006 | Frank

To say that we all do this in our spare time should be a correct statement for most, if not all, of us. I certainly don't get paid to surf the 'net and answer questions to problems at companies that I do not work at. But if I have some spare time a


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