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 | Thu Sep 13 17:29:02 EDT 2007 | fnorradd
I am currently having a problem with uncut legs on one side of axial components from a universal dual head insertion machine. Initially it was thought that the anvil on one side was engaging slow so I stripped down and changed the seals in the botto
Electronics Forum | Tue Mar 18 12:38:39 EDT 2008 | fsw
Hi! Can anyone tell me what is the min spacing between PCB edge & land pattern to avoid cracking of components due to mechanical stresses caused while depaneling with cookie/pizza cutter. Thnx!
Electronics Forum | Wed Feb 18 22:20:05 EST 2009 | LH Ng
Hi All, Does anyone know if there is any standard equipment capable for Ceramic/Alumina based PCB depenaling (cut into odd shape)? I am aware of diamond saw cutter, but it only limit to straight line cut. Thanks. LH
Electronics Forum | Tue Feb 28 16:58:39 EST 2006 | PWH
Too fast heating/cooling rate in reflow (look at mfg's spec.). Z "overdrive" on pick and place or chipshooter though unlikely I would say. Depanelization method (bending a scored board to break it is tough on things). Bad PCB design - cap. too clo
Electronics Forum | Mon Sep 21 18:57:23 EDT 1998 | Dave N.
Currently we are having an issue with our current PCB routing cutters in 0.125". It has come to our attention that the vendor has set the mean diameter to be .1235" +/-.001". As such, we recieve a number of cutters in the .1225 realm. This has caused
Electronics Forum | Thu Jun 04 22:18:40 EDT 1998 | David Newman
1/8" cutters, although they can only be used with our newer height-controlled machines. 3. Reduction of operating parameters. Reduced Z-axis plunge rates for the larger cutter sizes. 4. Addition of a 1/2 sec. dwell at the plunges. The small pause he
Electronics Forum | Wed Nov 29 08:55:35 EST 2017 | capse
I represent Fancort Industries. We provide "pizza cutter" and horizontal opposing blade "guillotine" style v-score depanel equipment. The edge clearance requirements are 0.030" - 0.050" for the wheel cutter and down to 0.020" for the opposing blade e
Electronics Forum | Wed Nov 25 12:33:16 EST 1998 | Scott Snider
| A buddy of mine has problems after depaneling double sided pre-scored PCB's. Resistors near the edge, after put into the slice and dice machine contain micro cracks. He's checked for them before and after depaneling. We figure it is the sectioni
Electronics Forum | Wed Mar 19 09:54:44 EDT 2008 | davef
Here's what we suggest: * Keep a 5-mm space between a board edge and a ceramic capacitor. * Mount the capacitor parallel relative to the edge. * Design pads about a half of the termination. * Fixture the board when using your pizza cutter.
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