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."
Electronics Forum | Wed Feb 01 08:18:28 EST 2006 | slaine
RS sell a heat cun that is fully temperature adjustable buy one of them and pre set it to the right temp then put a calibration sticker over the control.
Electronics Forum | Tue Jan 31 15:44:08 EST 2006 | John S.
We're looking at lead free surface finishes for some of our products. On one supplier's site, I found a note that tenting vias on ENIG boards can lead to the black pad phenomenon. How does this compare to your design guidelines and experience? Than
Electronics Forum | Tue Jan 31 15:52:39 EST 2006 | russ
I have never related Solder mask layout to Black Pad. I don't see how they could be related but.......
Electronics Forum | Wed Feb 01 08:20:04 EST 2006 | Chunks
Can you post the site where you saw this? I've never heard of such a thing.
Electronics Forum | Wed Feb 01 14:31:03 EST 2006 | John S.
http://www.saturnelectronics.com/docs/Getting_the_Lead_Out.pdf This is a document provided by one of our suppliers discussing lead free PCB considerations. Within the document, it mentions black pad being associated with tented vias. Thanks John S.
Electronics Forum | Wed Feb 01 16:04:10 EST 2006 | russ
Yes it does doesn't it! I wonder how this can cause black pad. Can you contact Saturn and ask them specifically? I browsed other PCB MFGrs. for this type of info and cannot find anyone else who claims this.
Electronics Forum | Wed Feb 01 00:06:48 EST 2006 | KEN
Your product may not no-clean compatible. "No Clean" must not be confused with "no need to clean". Your end application, operating environment and circuit operation (form-for-function) will dictate your cleaning requirements.
Electronics Forum | Wed Feb 01 10:31:49 EST 2006 | trs
How about muffin fans.....30 or so dollars for a sleeved bearing fan (from vitronics)....when you can go to rodale and get the fans for around 15 or so dollars and you get the better ball bearing fans (that should have been used in the first place).
Electronics Forum | Wed Feb 01 11:05:55 EST 2006 | Rob
That's a rip off, sleeved bearing fans are utter crap, and should never be used on anything other than cheap crap or short life products. It's not as if ball bearing fans cost much more either.
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