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 | 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 | 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 | Thu Feb 01 03:02:50 EST 2018 | robl
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 sam
Electronics Forum | Fri Jul 28 09:09:47 EDT 2006 | stepheniii
Do you mean making bare boards or populating bare boards. You post sounds like you mean the first but this forum mainly deals with the second. And to do either well, you need 10-20 years experience. Or hire someone with said experience.
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
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 | Sun Sep 12 10:08:55 EDT 1999 | Earl Moon
| hello | | having a problem with one customers bare boards not matching my stencil apertures. i design stencils based on gerber data and reduce up to 15% on some pads. do some board houses reduce pads after receiving gerber data???why would they d
Electronics Forum | Mon Sep 13 04:11:27 EDT 1999 | Earl Moon
| | hello | | | | having a problem with one customers bare boards not matching my stencil apertures. i design stencils based on gerber data and reduce up to 15% on some pads. do some board houses reduce pads after receiving gerber data???why would
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