Electronics Forum | Thu Aug 22 07:48:30 EDT 2002 | Dave Milk
While separating individual pcbs from a panel, operators have caused delamination of the edge of the board, at the tabs that were cut. How can these boards be repaired? The delamination causes them to fail J-STD-001C 9.2.1.1.d. Also, what would yo
Electronics Forum | Mon Aug 27 11:11:16 EDT 2012 | rway
We have 1/2 dozens 0.031 pcbs that bow after going through the oven. We are looking for a solution to this problem to prevent bowing of the pcbs. As a result of the bowing, the pcbs, on occasion get caught in the oven, and more often have transfer
Electronics Forum | Fri Oct 26 05:03:17 EDT 2018 | farouk225
Hi everybody, I have a question about the minimum distance to leave beteween a non non-plated mounting hole with copper pads and the edge of the PCB. Is there any formula or rule to apply ? For example for a hole of diamater equals to 5.6mm which
Electronics Forum | Mon Jul 01 09:33:08 EDT 2019 | dbuschel
if you can't change the PCB materials or design at this point, you might be able to reduce it somewhat through the use of fixtures or edge stiffeners. Unless it is a particularly thick board, I don't think the reflow profile would be the issue. The t
Electronics Forum | Thu Dec 29 07:26:37 EST 2011 | janz
Hi, If this is sworf from pcb let say after routing of panel and sworf is attach to pcb cleaning with ultrasonics does not help unfortunatly. one of new cleaning technic which is worth to investigate is "snow jet". this is used during deburring and
Electronics Forum | Tue Feb 15 00:27:39 EST 2011 | jeffr
First clean and de-bur the hole in the nozzle, then try it again. If the Head does not pick up at the feeder, then moves to the dump position...it means that the Vacuum Sensor Board has detected that the nozzle vacuum is above the LOW threshold setti
Electronics Forum | Thu Jul 13 22:20:38 EDT 2000 | Dave F
=10 mils larger than lead 3 silk screen legend text weight >=10 mils 4 pads >=15 mils larger than finished hole sizes 5 place through hole components on 50 mil grid 6 no silk screen legend text over vias (if vias not solder masked) or holes 7 so
Electronics Forum | Wed May 03 11:17:25 EDT 2006 | aj
Guys, What DFM is standard for Minimum Edge Clearance on a PCB for Fiducials and components? Any advice appreciated. aj...
Electronics Forum | Tue Jun 14 10:02:11 EDT 2011 | travishemen
Thats .088" from component edge to pcb edge.
Electronics Forum | Sun Apr 12 10:44:44 EDT 2015 | proy
I have a small PCB which has gold finger edge connector along one side. This limits the PCB fabricator panelization due to the bevel required on the edge connector Does anyone know of a simple process to add the bevel AFTER the boards are assembled a
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