Electronics Forum | Fri Oct 20 14:13:32 EDT 2000 | DENNIS XIONG
Dear all, We have a PCB design mistake that causes exposed copper layers on the edges of breakaway locations. Although we fixed the design, but we already made a lot of boards plus many made before we found the problem. I wonder if any one have some
Electronics Forum | Tue Jun 17 11:18:20 EDT 2003 | Claude_Couture
How are the 8 units distributed on the panel? 1 X 8, 2 X 4? Are there "V" groves scored in the panels to "break away" the units? Do you run on edge conveyor in the reflow oven? You need center support if you have 2X4 pattern with "V" grooves. Or us
Electronics Forum | Thu Jan 05 10:56:49 EST 2012 | davef
The high thermal mass of metal core boards makes them difficult to heat with hot air convection heating or IR. So, edge heaters are used for effective heating of heavy core circuit boards. Hakko and VJ Electronix offer edge heaters. We imagine othe
Electronics Forum | Tue Nov 28 11:58:58 EST 2017 | emeto
Hello all, I am about to design a panel and there are two connectors on the board that seem to be very close to the edge of the board. I am worried that they might interfere with the cutter blade. Can you tell me how close do you think a part should
Electronics Forum | Sun Dec 08 22:20:39 EST 2002 | grantp
Hi, We have been manufacturing a PCB, however it's been quite tricky to profile, as the edges of the PCB are reflowing before the center of the PCB. I have looked at the design, and there is a small power plane for 2.5 Volt in the center of the PCB
Electronics Forum | Tue May 11 18:59:36 EDT 2021 | rgduval
It's annoying, but, the last time I was faced with a similar issue, we ended up sanding the edge on the PCB after depanelization. I stronly recommend charging for this service. It could be sped up by using a Dremel fixed in a vice, but, I would cau
Electronics Forum | Fri Oct 22 23:45:37 EDT 1999 | Jim Cristiano
Hi, I'm looking for vendors that manufacture connector pins that would solder onto the edge of a small SMD pcb so that I can mount it as a SIP onto a larger PCB. Better yet, are there small diameter pins that can be soldered into thru-holes so the SM
Electronics Forum | Fri Aug 28 06:39:29 EDT 2009 | sachu_70
I had seen such effect caused by the wave itself, where the exposed wave surface was coated by a thin dull oxide layer which then adhered to the bottom side of PCB during wave soldering. You could verify if the wave surface is clean metal when the P
Electronics Forum | Fri Jan 14 09:36:49 EST 2000 | Richard
If the gold fingers are pad types which plug into expansion slot connectors, I have used a titanium guard attached to the wave conveyor over the solder pot, which allows the PCB to connect to the fingers but masks the solder from the gold pads along
Electronics Forum | Tue Nov 30 12:20:35 EST 1999 | Wolfgang Busko
Hi Steve, is it possible for you to get more than one PCB in a panel and separate them after assembly. Some kind of framepiece for support at the affected edge later to be separated should do it as well. My first ideas Wolfgang
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