Electronics Forum | Wed Jun 08 13:49:48 EDT 2011 | sonofptolemy
Hello, I am having a problem with HASL PCB's after it comes back from the stuffer. To me it looks like oxidation and it causes poor wetting. This leads to a bunch of problems all of which have different symptoms but the cause is this oxidation proble
Electronics Forum | Thu Jun 09 14:45:21 EDT 2011 | kahrpr
Does the board look like that before Reflow?
Electronics Forum | Fri Jun 17 13:51:21 EDT 2011 | mosborne1
Your problem is at your board house with the finish. There is not enough tin deposited on the ground plane. Could be the current density too low on the ground plane. If electroless they just didn't process these correctly. What is the finish suppose
Electronics Forum | Thu Jun 16 17:02:40 EDT 2011 | boardhouse
The finish looks like Immersion Tin or Silver. if its lead free Hot air - could be issue of to high of a Tin Content. find out what brand of Hasl they are using. SL100 Example. Is this tarnished look only being seen after assembly or have you seen
Electronics Forum | Fri Oct 15 18:09:49 EDT 2004 | teamcanada
No lead devices oxidize very quickly when washed. Try to keep it a no clean process. Solderability comes into play a bit depending on solder paste.
Electronics Forum | Thu Apr 10 16:02:04 EDT 2008 | brulal1
Hi,we are looking to use Press fit connector on our PCB assemblies. Did anyone out there have any issue with press fit connector? Thank Bruno
Electronics Forum | Mon Jun 27 06:52:07 EDT 2011 | rpatel28364
Hi All We are facing problem with solderability of BGA connector. After Xray we have found open under BGA connector. After removing from PCB it seems some copper pads are still gold. We are not sure why this is happening. We have 5 thou stencil and
Electronics Forum | Fri Jun 14 14:30:36 EDT 2002 | davef
Assuming you are talking about solderable surfaces: People specify various materials to protect the solderability of the pads on the board. Gold, actually, Electroless Nickel - Immersion Gold [ENIG], is popular. * Board fabricators like it because
Electronics Forum | Fri Nov 08 05:40:54 EST 2019 | leeg
We place these on a few boards and have no issues with reflow or warpage. How thick is your PCB?
Electronics Forum | Sun Oct 19 06:42:01 EDT 2014 | timbo292832
im designing a circuit that will require the use of a edge connector so it can connect to another circuit. i need to do this so i can get both micro controllers communicating i have done a bit of research and am thinking about using a pcb manufact
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