Electronics Forum | Tue Nov 06 16:20:52 EST 2007 | jmelson
Mostly, you don't want to do that. Whoever designed the PCB should be able to produce a "pick and place report" or similar file that lists components by designator (R123) component value/type (100 Ohm 0805) and XY and rotation. If there's absolutel
Electronics Forum | Fri Feb 06 08:22:32 EST 2009 | davef
Conductivity is the recprical of resistivity. So, ... * 10 uS = 100k ohm * 5 uS = 200k ohm * 2 uS = 500k ohm We're unsure of the units of your conductivity of "1,566 uS/cm". Also, is that one thousand, five hundred, sixty six?
Electronics Forum | Tue Oct 05 16:02:04 EDT 2004 | Bryce
I am curious if anyone can help explain to me the cause of an effect we are seeing with some failed caps. The parts have been found to be cracked and in most cases are hard failures (capacitance well out of spec and DCR less than 100 ohm or shorted)
Electronics Forum | Tue Feb 16 14:04:10 EST 2016 | tsvetan
We are designing board which have to plug in M.2 connector and thickness is limited to 0.8 mm The board is very complex with many BGAs and DDR3 memory chips and we will need 6 layers for routing. The problem is that we will need signals with 50, 90
Electronics Forum | Tue Nov 04 15:17:52 EST 2008 | iziris
This is my first circuit board that I am attempting to build and need a little help. Not exactly sure what is going on but maybe one of you guys could give some input. I am attaching the electrical diagram I am using. Everything thing seems to be wor
Electronics Forum | Mon Feb 04 20:27:25 EST 2002 | davef
1,000 G ohm ||100 M ohm Dielectric Constant ||9.5 ||4.9 Loss Factor ||5 - 20 ||200 * E indicates exponent Continuing: * Spacing between same plane traces effect the electical parameters between the traces. * Dielectric materials used between diff
Electronics Forum | Wed Jan 09 20:40:58 EST 2002 | ianchan
Since we are on the topic, What we do over here, is to get SMT Technical to machine pick&place "sample component layouts" onto double-sided tape, which in turn is placed onto an actual PCB... QA will take that double-sided tape sample, and using an
Electronics Forum | Wed Sep 19 10:34:44 EDT 2018 | sarason
Now I have to guess and make a few assumptions. Without looking at the back side of the board my guess is you have some 400-100V diode bridges before the resistor ,zener and the FET . The FET is a 500V 0.85 Rdson NFET. All of this suggests a chopper
Electronics Forum | Fri Jun 25 03:50:24 EDT 2010 | leadthree
They are panels of 2 and we break them before ICT. Have to say that we do not check that 100nF cap in ICT since it's parallel with some eCaps.
Electronics Forum | Tue Nov 25 16:26:43 EST 2003 | tdurston
We are trying to establish requirements and process controls for completed, cleaned SMT assemblies. We have problems with our high impedance circuits (100 meg ohms) being affected by residue. Some boards require additional cleaning cycles to remove
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