Electronics Forum | Sat Dec 22 07:14:15 EST 2007 | andy1975
My understanding is that if the delta T was 4deg/sec then chip capacitors would delaminate. I have no evidence to support this just an engineers advice. Andy
Electronics Forum | Wed Dec 17 11:28:22 EST 2008 | patrickbruneel
Stephen, You're absolutely correct I totally miswrote the post. What I wanted to highlight is the efforts from the reachforlife organization. Decision making should be based on scientific evidence. http://www.reachforlife.eu/home.php?lg=UK
Electronics Forum | Thu Apr 09 06:28:11 EDT 2009 | qualityguy
We have different Solder mask 'gloss' and 'satin' the gloss has a surface energy =40 dynes. The test evidence to date is strong correlation between surface energy, mask type, HASS failure
Electronics Forum | Fri Jan 08 02:25:42 EST 2010 | graceytiu07
Happy New Year to All: Has anyone of you encountered a solder short on QFP pin yet there's no evidence of bridging in between gaps? I am using an SnPb solder paste.
Electronics Forum | Mon Mar 01 09:17:56 EST 2010 | duso02
Hey....I think it might be the silicone adhesive! LOL Yeah, that'll do it. We use simple Shercon paper dots. Work like a charm. No evidence of "de-wetting".
Electronics Forum | Wed Aug 29 15:51:17 EDT 2012 | joeherz
There is a battle brewing over a new policy with long hair and ESD protection in our facility. I'm not finding a lot of evidence to support the position. Any info you all can provide on the subject would be appreciated. Studies on the subject supp
Electronics Forum | Wed Jul 31 13:19:38 EDT 2013 | anvil1021
Does anyone know how to test for hard gold on a PCB? We are in a challenging situation with a PCB provider and we need some objective evidence other than wire bond failure to present to them. Any comments could help ....Thank you Anvil
Electronics Forum | Mon Apr 07 13:12:02 EDT 2014 | cyber_wolf
Gary, We are missing something here. I see no evidence of reflow at all. If you have a thermo couple under the inductor, 237 deg with a TAL of 48 seconds should work all day long.(even though it may be on lower end of process window) SAC melts at 21
Electronics Forum | Wed Dec 13 11:02:15 EST 2017 | dleeper
DeanM, What make/model of machines are you considering? As is evident by the feedback, your mileage varies greatly depending on who's' machines your using.
Electronics Forum | Tue Feb 11 10:59:31 EST 2020 | dontfeedphils
I was going to say, technically it's BTC, so I don't believe it needs a fillet, only evidence of wetting.
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