Electronics Forum | Tue Apr 04 04:55:31 EDT 2000 | Jesper K
It's a typical answer from a board fabricator - 'None of our other customers have these problems'. But, and correct me if I'm wrong, none of the other customers uses the same PCB's as you do! Your preheat-parameters looks OK - they should not be giv
Electronics Forum | Fri Feb 21 16:08:56 EST 2003 | clarkk
Hello all, We use pressurized air from a blower to blow off excess water from our pcb assemblies after wash. I'm concerned that this could potentially cause esd damage to sensitive assemblies. Is anyone aware of a device that can correctly ionize the
Electronics Forum | Mon Feb 24 12:41:03 EST 2003 | gregp
Look at a company called ARTX, Ltd. (artxltd.com) or Exair (exair.com) They make air knives that ionize shop air for this purpose.
Electronics Forum | Sun Feb 23 14:51:02 EST 2003 | davef
Without being clear on whether you're talking about: * Standard air knives at the back-end of your in-line cleaner ... OR * Hand held or similar nozzle. Standard air knives: This causes no problem with ESD because the relative humidity is so high t
Electronics Forum | Mon Feb 24 13:17:59 EST 2003 | Stephen
Air is non-conductive, and it is moving. Not only is it moving, it is moving against something else i.e. the hose. Anytime you have movement (friction) between two dissimilar non-conductive "things" you have the possibility of static build-up. This
Electronics Forum | Fri Feb 21 20:01:14 EST 2003 | MA/NY DDave
Hi This is a good one. Let me take a stab at it. First remind me, why is this air coming in carrying a charge. I think I remember yet it is always fun. Also hopefully it isn't carrying any compressor oils. There are some companys that make other t
Electronics Forum | Thu Aug 12 17:15:56 EDT 1999 | Jim Blankenhorn
| I am currently involved with designing a pcb which will use 225 pin bga,s | The problem with this design is that the components will dissipate a lot of heat and the design we have come up with is | use the middle 6 or 7 rows of balls as the ground
Electronics Forum | Fri Aug 13 04:12:41 EDT 1999 | ray hare
| | I am currently involved with designing a pcb which will use 225 pin bga,s | | The problem with this design is that the components will dissipate a lot of heat and the design we have come up with is | | use the middle 6 or 7 rows of balls as the
Electronics Forum | Tue Jan 24 09:21:34 EST 2017 | emeto
there is an IPC standard for machine accuracy and repeatability. Here it is how it works. You have to place certain number of parts on a specially designed PCB(that allows placing variety of parts on big part of the machine work area). After that you
Electronics Forum | Mon Jul 26 10:25:12 EDT 1999 | Boca
| | We are having a process related problem with pullup resistors on a controller card which has a I960 micro-processor. | | The controller monitors signal inputs and it's own resources then blinks a LED to indicate its working. The problem is that a
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