Electronics Forum | Fri Apr 13 15:42:18 EDT 2007 | flipit
This is sort of interesting. We had a clock problem with Alpha OM-338 lead free paste. The flux residue was causing a clock problem and the clock was only a few KHz. We went back ot OM-5100 lead paste and the problem never occurred again. Chris
Electronics Forum | Wed Sep 05 16:35:22 EDT 2012 | davef
It depends, but I'd guess that as a minimum the floor clock will start when the component returns to room temperature. It's easy to argue that the floor clock starts earlier than that!!! Probably, the floor clock starts a couple degrees lower than th
Electronics Forum | Mon Feb 05 17:29:18 EST 2007 | flipit
I had problems with very simple timing circuits in the kilohertz range with leadfree NC solder pastes. Never saw the problem with lead NC solder paste. Run lead free no clean and clock was off. Run lead no clean and clock was right on.
Electronics Forum | Thu Mar 29 08:54:50 EST 2001 | neil
The left menu displays the time that the browser window was opened or last refreshed. (notice that it does not tick) This is taken from the server's internal clock. These clocks are notoriously inaccurate. I'm looking into synchronizing the clock aut
Electronics Forum | Fri May 09 05:17:28 EDT 2003 | Phil J
Could you explain "dry cabinet storage may not stop the clock!!!"
Electronics Forum | Mon Jan 22 20:14:52 EST 2001 | davef
Take note that contrary to popular belief, it is not acceptable to assume that the floor life clock will be temporarily stopped when components are put back in dry storage following exposure to ambient conditions exceeding one hour. ... why doesn�t
Electronics Forum | Tue Jul 01 21:06:12 EDT 2003 | ramanandkini
My customer just assembles it to the car. We want to use the silica gel to avoid moisture since the assembled part (clock) reach him via ship after 50 days. The electronic circuit board has no conformal coatings at present. We are working on that. Ou
Electronics Forum | Fri May 09 09:09:22 EDT 2003 | fmonette
Phil, here is why "dry cabinet storage may not stop the clock" : The moisture diffusion inside a component is actually quite complex. When previously exposed components are returned to dry storage, the moisture gradient that is already absorbed in
Electronics Forum | Mon Aug 10 20:53:32 EDT 2015 | r92024
Thanks for your reply, Rob. I wish I could attach images here, but despite the option for 'attachments,' it won't let me attach. The pendulum mechanisms are the cheap plastic type, from China, not the older style mechanical ones. Not sure if this l
Electronics Forum | Thu Mar 16 22:19:38 EDT 2017 | deanm
First, reflow does not reset the clock for MSL exposure. The best solution is to run the second side before the exposure time expires. I am curious to know why they must sit for 40 hours. If that cannot be done, then store the assemblies in a dry c
