Electronics Forum | Fri Feb 01 11:06:07 EST 2008 | wayne123
our company has beed experiencing some delamination on our circuit boards, we have been lead free for a while and haven't been adjusting temperatures, Found out that the board house was doing something wrong in there process, finally was able to prov
Electronics Forum | Fri Aug 22 14:24:54 EDT 2008 | boardhouse
Paul, I would do two things, eval whole lot for any etching issues as shown above and scrap and two I would have your copper thickness checked, my guess your copper plating will be low. Check plating thickness in Via holes - if less then 8/10th's r
Electronics Forum | Wed Apr 04 13:50:19 EDT 2012 | rway
This is more a cosmetic issue than anything else. Is this production or an RMA? If it's an RMA, did the customer send it in like this or was it damaged at your facility. If the customer sent it in, I would make an attempt to fix it. I have used s
Electronics Forum | Mon Oct 21 09:22:56 EDT 2013 | sara_pcb
One of our PCB for high reliability application is having 2 BGAs(11X11, ADV 204), The pitch is 1 mm. We decided to wire the BGAs first using re-flow soldering and the rest of the components by hand soldering. Since the PCBs are for high reliability a
Electronics Forum | Fri Nov 11 20:29:45 EST 2022 | emeto
SMTA-643865, this is great information. I recently found online IPC1601 table saying 12months + . I was wondering what the + means? My company wants to scrap ENIG boards for 20k just because they hit the 1 year mark. Boards are perfectly sealed, so I
Electronics Forum | Wed Jul 04 10:40:51 EDT 2001 | nifhail
I have thousands of old datecode PCBs which has an Entek and HASL finished. Entek PCBs are about 6 � 1.5 years old and HASL boards are at 1 - 2 years old. To make it worse, some of them came in the loose form, no vacuum seal� nothin�. As for the HA
Electronics Forum | Tue Sep 14 14:25:35 EDT 2004 | scombs
Thanks everyone for all the input. All of our stencils do have the PCB # etched on the foil but when operators look for the stencils they are looking for the part # on the frame since they are all stored vertically in a couple of Remstar shuttles and
Electronics Forum | Sat Apr 21 20:40:23 EDT 2007 | mika
Thanks Darby, I got the point of what you are saying. Never the less, I still don't like when a pcb manufactor change the leads/threads on the pcb whitout mention this to us. In such a critical case! There should always be a close relationship betwee
Electronics Forum | Tue Nov 16 09:44:18 EST 1999 | - bobar
Ken, The technology you are referring to is also known as return-to-web. This panelization method involves a hard tooled perimeter die and a press equipped with an air cushion. The PCB circuit is punched out and then inserted or "pushed" back into
Electronics Forum | Fri Jun 29 05:50:27 EDT 2001 | nifhail
Thank Dave, your information was really helpful. Now that I have another few thousands of old datecode PCBs which has an Entek and HASL finished. Entek PCBs are about 6 � 1.5 years old and HASL boards are at 1 - 2 years old. To make it worse, s
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