Electronics Forum: aging (Page 5 of 33)

ESD question

Electronics Forum | Wed Jul 13 08:32:52 EDT 2005 | chunks

Global warming? Hmmm, seems to me the Earth has been getting� warmer ever since the Ice Age. Seriously, do you believe lead is a major contributor to global warming or just a severe right wing nut?

Poor Paste Release

Electronics Forum | Mon Jan 09 07:56:49 EST 2006 | slthomas

Squeegee pressure or height, snap off, the age and/or condition of the paste and the condition/cleanliness of the stencil are about all I can come up with, unless you got a new stencil and you changed the design parameters or they made it wrong.

Heat guns and component damage

Electronics Forum | Tue Jan 31 14:14:03 EST 2006 | samir

Ah, yes. The age-old battle of Production Supervision versus Process Engineering. I guess you just need to tell your Process Engineer, "Pretty please with sugar on top, investigate this f*cking issue."

Mydata

Electronics Forum | Fri Feb 17 05:15:12 EST 2006 | nemachines

Hi We came across a Mydata pick & place TP9 1993 model, We are looking for more infomation on this Model. ie :- Component sizes(From - Too ), centering device For this age machine are they any good. Thx

Justification on buying machine (Reflow/Wave)

Electronics Forum | Mon Jun 19 14:04:39 EDT 2006 | slthomas

Because some lead free solders are very corrosive to anything but titanium. Also "clean it very well" is kind of a crap shoot, isn't it? Did you get your solder tested for impurities and lead %age after you did the swap?

Paste-in-Hole reflow soldering

Electronics Forum | Wed Aug 09 08:59:52 EDT 2006 | zanolli

I agree with verifing this part is even high temp reflow compatible. The age of the original dwg release, 1986, and as there is no mention of high temp reflow compatibility, only a mat'l call out of nylon, leads me to think it is not.

RoHS round 2

Electronics Forum | Thu Mar 27 03:55:18 EDT 2008 | patrickbruneel

List in attachment. If you carefully read the list the EU is planning to go back to the Stone Age. No further comments.

PCBA Burn-in / ageing equipment

Electronics Forum | Wed Dec 03 08:51:47 EST 2008 | mrmaint

Try looking at Chart Industries. They offer HASS/HALT chambers that are capable of reaching the paramaters that you are looking for. Will require a nitrogen supply for the cooling end.We had a 3000gal tank of liquid nitrogen to feed two chambers.

PCBA Burn-in / ageing equipment

Electronics Forum | Thu Dec 04 11:29:24 EST 2008 | pbarton

We use Sharetree equipment for this task. Good for up to around 30 deg. c per minute ramps if required with liquid Nitrogen cooling.

PCBA Burn-in / ageing equipment

Electronics Forum | Thu Dec 04 12:17:15 EST 2008 | jdumont

We have a couple of Qualmark HALT/HASS chambers here. Never had a problem with either.


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