Electronics Forum | Thu Feb 07 20:55:09 EST 2002 | davef
You are correct about the location of wood on your friendly neighborhood triboelectric scale. But unfortunately for us [and fortunately for the ESD protected material board rack salesperson], the scale does not recognize the effect of the moisture t
Electronics Forum | Wed Jan 11 04:17:14 EST 2012 | amitsindwani
Can a bare PCB be ESD-sensitive ? If yes , in what conditions ?
Electronics Forum | Wed Jan 11 13:01:54 EST 2012 | davef
It depends. * A common bare PCB IS NOT ESD sensitive and is a static generator * A less uncommon PCB with embedded parts IS ESD sensitive and is a static generator
Electronics Forum | Tue Apr 12 04:35:30 EDT 2005 | dusty
How can I do paste printing and placement set-up without having to waste a panel?
Electronics Forum | Tue Apr 12 06:12:13 EDT 2005 | rlackey
Print it, place it,(Don't reflow it) check it, remove valuable parts & wash it. You could use double sided sticky tape but it leaves crap all over the board when you remove it. Rob.
Electronics Forum | Mon Jan 29 12:09:55 EST 2018 | fluxgate
I am working on a magnetic sensors design and noticed that my measured magnetic field bias shifts over time. I have studied the bare PCB and measured that it can be magnetized with a strong magnet. I tested two blank (unpopulated PCBS). The first PC
Electronics Forum | Tue Apr 12 22:23:05 EDT 2005 | Al
The way we do this, is to tape a transparent film to the PCB. The printers and chip shooters can read fiducials no problems. Once it has been run through SMT, simply remove the tranparency film and the PCB is ready for use, no mess no cleaning and yo
Electronics Forum | Wed Jan 31 02:56:53 EST 2018 | robl
Hi Fluxgate, Doubt it's the laminate unless you have embedded components. Nickel is ferromagnetic (can be magnetised),so I would expect some level of magnetism in ENIG, but not silver. Are you 100% sure it was immersion silver and not something
Electronics Forum | Wed Jan 31 12:59:53 EST 2018 | fluxgate
Hi Rob, I did check with the board house, and the confirmed that there was no Nickel plating, but that the silver went straight onto the copper in their immersion silver process. Interestingly I've even tested an unplated sample from that board hou
Electronics Forum | Tue Apr 12 12:08:06 EDT 2005 | Dave G
I use the solder sample pcb that comes w/ each batch of boards. We ask our pcb vendor to send 1 pcb for solder testing w/ each batch. This is usually a pcb that is completely done it just didn't pass electrical test @ the final stage. I kill two bird
