Electronics Forum: percent (Page 4 of 21)

normal waste

Electronics Forum | Thu Apr 10 03:03:23 EDT 2003 | emeto

Hi all.We have between 2 and 3 percent waste of components.The software gives info about the whole waste and I am interested what's the limit for component waste?Where I can read about it?Are there any tables with given limits? Any posts,please!

62sn36sn2ag on gold terminations?

Electronics Forum | Mon May 12 22:40:19 EDT 2003 | nyazga

I have always heard to use solder with 2 percent silver to reduce gold embrittlment. One vendor site said this is a myth. Does anyone know of a specific document recommending this such as IPC or MIL spec. ???

Stencil Aperture Reduction - Need Feedback

Electronics Forum | Fri Jun 27 08:32:08 EDT 2003 | davef

You should be fine. A fifteen percent reduction of these pads will probably improve reliability, depending on spacing of course.

Glue Bubbles

Electronics Forum | Thu Apr 08 10:54:16 EDT 2004 | mrmaint

We typically store the tubes straight up and down. This seemed to help with the air pocket problem. Did not solve it 100 percent. best bet is still vacum.

Efficiency Rate...

Electronics Forum | Thu Aug 12 10:02:00 EDT 2004 | JB

There is a lot of debate over efficiency rates in our group, what percent would indicate that we have a good efficiency rate in our SMT production lines? Ours vary from 40- 60% We are constantly trying to improve this numbers, but I am curious as wer

What is a CHAMPAGNE Voiding?

Electronics Forum | Fri Dec 03 12:17:18 EST 2004 | Dreamsniper

Hi, I was told that there is a reliability problem with a 30 to 50 percent champagne voiding on chip components. What is this? first time I've heard this terminology. can you help me? regards,

i have to buy one NXT from Fuji What do you think???

Electronics Forum | Fri Dec 17 07:15:22 EST 2004 | technitelec

Dear Rob, Dear all, i believe that i have enough to take decision and it will go to NXT 100 percent sure. Wishing to all of you all the best for the end of the year Thank you again serge

N2 delivery supply

Electronics Forum | Thu Mar 10 19:30:29 EST 2005 | KEN

If economical is what your looking for the atmosphere already contains 20 odd percent nitrogen. Why the need to use N2 with lead free?

Silver finish components soldered on Ni-Au finish pads

Electronics Forum | Wed Apr 05 20:52:51 EDT 2006 | davef

If you let the silver content of your solder connections get much above 3 percent, it could cause reliabilitility problems, similar to the problems caused when the gold content gets too high.

Selective solder nozzels

Electronics Forum | Fri May 05 09:31:07 EDT 2006 | finalassy

Yes the nozzels that we use are 99.8 percent iron. Does steel wet better, or do you just know that your works good.


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