Electronics Forum: aging (Page 4 of 33)

What is a good spec for board warpage?

Electronics Forum | Wed Dec 19 07:45:01 EST 2001 | nicholt

We are using a age old warpage spec of .010 inch per inch max warpage spec. Is there a recommended warpage spec for surface mount boards?

How old is old?

Electronics Forum | Fri Sep 20 17:21:47 EDT 2002 | davef

A thread os "old" when it drops off the page. So, "age" depends of the 'forum', for example: * 'Production Forum' threads currently drop off the page after about 12 days. * Other forum threads drop off the page after 30 days.

Stencil Printers

Electronics Forum | Wed Dec 03 09:13:59 EST 2003 | vinhmach1

Hi, Each people will have diff idea. If you ask me... with that $90k in hand you can get a used MPM 3000 fully automate from some dealer/broker. Very nice machine. Prices will be depand on age and option. Good luck.

SOT 23 not reflowing

Electronics Forum | Tue Jan 13 10:25:29 EST 2004 | James

Do you have a different reel of parts. The leads could be oxidized from age. If everything else is soldering well, I would try that. Is your profile on your oven correct?

Conductive Adhesives and flip chip

Electronics Forum | Thu Feb 12 21:30:45 EST 2004 | davef

Comments are: * We're amazed that you can thermocompression bond to epoxy. * Silver may be oxidizing during expoxy cure. * Klein Wassink talks about aging in THE BOOK [Soldering in Electronics: A Comprehensive Treatise on Soldering Technology for Sur

Cleaning Wave Solder Conveyor Chains

Electronics Forum | Mon May 24 14:12:12 EDT 2004 | jdumont

I thought I was the only one left with one of these dinosaurs. How is yours working for you, ours (despite its age) still works pretty well. I think its going on 20 years old now!!

Ni/Sn plated parts

Electronics Forum | Mon Jun 14 17:21:31 EDT 2004 | russ

How old are these parts? Sn/Ni plating is very succeptable to age and everything else. They are possibly tarnished. Also, what is your peak temp in reflow? It takes about 225 230 C to get good wetting to the underlying nickel. Russ

Chipmounter Placement Speed

Electronics Forum | Wed Sep 08 20:33:53 EDT 2004 | peter016

Hi Jon, Thanks for your reply. Age of the machine does play a part too. So, at 60%, there is still 10~20% improvement opportunity for the Siemens machines.

BGA Engineer Pay Rates

Electronics Forum | Thu May 19 12:51:54 EDT 2005 | Mark

$18-$25 per/hour . . . depending on experience, age, sex, and race. Just kidding about the last three.

Mydata Pick & Place Machines

Electronics Forum | Wed Jan 17 18:00:10 EST 2007 | dyoungquist

My company runs an older TP9 machine that has had a few problems due to the old age but their tech support has been VERY good. I would recommend Mydata to anybody.

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