Electronics Forum: 100 (Page 76 of 308)

QFP100 solderability

Electronics Forum | Tue Apr 15 06:10:54 EDT 2008 | aj

Try a new batch of Components ? We had a similar problem a while back - it was down to the component. aj...

QFP100 solderability

Electronics Forum | Wed Apr 16 08:24:07 EDT 2008 | davef

Have you: * Checked the solderability of the component through a test such as Dip & Look? * Checked the solderability of the board by pasting and reflowing a bare board? * Checked the quality of the solder paste print prior to component placement? *

QFP100 solderability

Electronics Forum | Thu Apr 17 07:44:59 EDT 2008 | GSx

Check for lead finisching Lead Free finiscing like (e4), in case of AgPd plating you may have similar soldering problems Regards

Reflow profile training ?

Electronics Forum | Thu Apr 17 07:46:22 EDT 2008 | cyber_wolf

CK, I agree with you 100%. I mentioned this to one of my managers....... But, that is what they want. Alll....righty....then...

How can a sound file be played out at 100dB and 21-40 kHz only?

Electronics Forum | Tue Jun 03 22:51:51 EDT 2008 | davef

Your circuit would consist of: * White noise generator * ~30Khz bandpass filter * Amplifier * Power supply You can find modules for these functions on the web. Good luck.

CFM requirements for Heller 1500 reflow oven exhaust

Electronics Forum | Thu Jul 24 10:49:12 EDT 2008 | slthomas

100 CFM at each exhaust if you're using room air, 25 CFM/ea if you're using nitrogen (according to my manual...never used nitrogen myself) per their specified delivery rates.

Best source for 50lb of SN100C bar

Electronics Forum | Thu Jul 31 15:01:12 EDT 2008 | dyoungquist

Try Powell Industries (www.powellindustries.com). We bought 50lbs from them about 6 weeks ago. It comes in 25lb boxes and I think you can order just 1 box if that is all you need.

Paste in hole question

Electronics Forum | Mon Aug 18 14:38:51 EDT 2008 | floydf

Real Chunks, Does "aperture opening 100% same size as the via" mean, aperature the same size as the hole, or the barrel of the via. If that makes any sense. Thanks

Mydata M100 Series ?

Electronics Forum | Tue Aug 19 10:29:28 EDT 2008 | dyoungquist

Looked like a sweet machine at the APEX show but I have not used one. Sure wish I could talk my boss into getting one before our old Mydata TP9 machine dies.

Mydata M100 Series ?

Electronics Forum | Fri Aug 29 09:13:48 EDT 2008 | tech1

We received one about 5 weeks ago, about 65% faster and still have all the flexibility of our original mydata machines. On a side note we had a head to head competition between them and juki for a week.


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