Electronics Forum | Sun Sep 01 22:02:58 EDT 2019 | sarason
Have you got a circuit diagram for your driver board? If not measure your driver into a resistive load and look for differences in current flow voltage drops under load dried out caps. Dead current measuring circuits etc. If you see an IC, look it up
Electronics Forum | Tue Jul 31 13:55:27 EDT 2001 | mparker
Maintain DI water to 18 Meg Ohms resistivity. You can go down as low as 2 Meg ohms, in a pinch, but I would caution on what type of board you are running if trying to clean on 2 Meg ohm. Anything that is running an RF or high frequency circuit could
Electronics Forum | Tue Feb 27 22:40:28 EST 2007 | davef
IPC-A-600G, 2.9 Solder Resist [Solder Mask] [snip]"Solder resists are used to limit and control the application of solder to selected areas of the printed circuit board during assembly soldering operations and are sometimes used to reduce dendritic f
Electronics Forum | Mon Jan 14 06:28:18 EST 2008 | gregoryyork
Hi its normally down to the state of cure of the resist type not the actual type be it matt or gloss. If its not cured correctly it will produce solder balls. Pending where you are you could try our 35-41 or new 35-41-30 flux this will reduce the pro
Electronics Forum | Thu Jul 02 05:49:37 EDT 2009 | rway
Nuez, I don't really see how it's a problem. If your not using a wrist strap, there's no grounding issue. It will work fine as is, equipment insulated or not. The "conductive" mats have many mega-ohms of resistance as it is. Simply "bypassing" t
Electronics Forum | Thu Dec 13 20:54:23 EST 2001 | davef
There is neither �nominal thickness� nor �is there a set maximum� for via masking. We use some of our vias as test pads. So, as you�d expect, we get rabid when we get mask bleed onto these pads. IPC-6012 - Qualification & Performance For Rigid Pri
Electronics Forum | Wed Sep 08 17:49:19 EDT 2004 | gregoryyork
Knock off some balls and you may find it has a flat bottom to it were it has mechanically stuck to the solder resist usually seen under 60X magnification. Common with Liquid photoimageable resist (I know again) Best way to check resist cure is to pay
Electronics Forum | Mon Mar 07 08:53:59 EST 2005 | Marc
some thoughts come to mind..... usually an air pocket as the solder heats up, or the surface is still solid and liquid under, pressure builds and then... check your heaters, make sure one (or more) is not bad, may be getting uneven heating. cover y
Electronics Forum | Thu May 12 07:27:51 EDT 2005 | Frank56
Hi Amejia, Do you can try my silly idea by using some connector header with plastic holder type cut and preparation by number of pin same as number of hole you want to mask and insert thru the pcb hole before you coat or may be you can use some type
Electronics Forum | Tue Jan 05 18:07:53 EST 1999 | Dave F
| I am looking for information regarding post wave soldering of stranded wires into a circuit board using OA core wire solder. We do a final pass thru the cleaner after the hand soldering but I'm concerned about any OA flux residue that may have wic
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