Electronics Forum | Tue Feb 10 13:59:29 EST 2004 | Vadim
At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed,
Electronics Forum | Tue Feb 10 14:02:03 EST 2004 | Maryann
At times the orange peel effect can be from excess flux improperly removed. Our company strictly provides the service of selctive conformal coating application. We quite often see this. Most times if the board is simply "water washed", or IPA washed,
Electronics Forum | Mon Jan 26 20:17:01 EST 2004 | davef
Some temporary solder masks outgas ammonia as they cure. It's possible that the first side cured and out gassed through the grounding hole. But when the second side cured, it outgassed between the board and the coating and in so doing reacted with
Electronics Forum | Tue Jan 27 04:27:59 EST 2004 | loz
Thanks Dave, sounds totally plausible. In answer to Pete B's questions 1. Spot mask IS only being applied to earthing points, top and bottom side. 2. Unsure. Speaking to manufacturer they are telling me it is compatable. However data sheet is vague.
Electronics Forum | Thu Apr 01 12:05:21 EST 2004 | babe
Heat guns scare me, hot air scares me too. Just the heck of it why not apply high temp paste to the center and eutectic 63/37 standard solder to the outside pads. The outside reflows first allowing proper seating of the component and with a proper pr
Electronics Forum | Thu Apr 08 10:11:27 EDT 2004 | Dreamsniper
Hi Guys, Have you tried using a standard dish washer for cleaning PCB's with BGA's. What detergent or cleaning chemicals did you used? I wonder if it will work to clean a WS Flux PCB using the dish washer then get it rinsed by an old aqueou cleaner
Electronics Forum | Wed Apr 28 15:08:10 EDT 2004 | russ
This could be a long shot but here goes. I have found that if flux is applied in excess that it will actually "move the solderballs" during reflow. I have actually seen where the balls are completely outside the package and oviously there are short
Electronics Forum | Thu Jun 03 19:56:56 EDT 2004 | Ken
Now that is creative! I going to talk to my machinist. I need a bar of aluminum machined to accept 24 pigs (ass up of course). Then I need a "squeezing" mechanism to apply a proportional pressure to the pigs abdomen to make the "ass gel" support t
Electronics Forum | Tue Jun 15 17:29:25 EDT 2004 | gregp
Just an idea... Try investigating methods for storing large drawings. We have a hanging file cabinet for E size drawings. You apply a self adhesive strip of mylar to the end of the drawing that has four holes in it. The cabinet opens up and 2 sets
Electronics Forum | Mon Jul 26 06:53:08 EDT 2004 | teilo
We manufacture conversion kits for lead free wave solder machines. We recommend that all component parts be manufactured from grade 1 / 2 Titanium which is far superior to any coatings applied to stainless steel and not as expensive as people think.
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