Electronics Forum | Thu May 04 13:35:28 EDT 2017 | jmathis
Hello All, I was given an assembled flex circuit PCB and asked how the board was depanelized as there are no view-able witness marks that I can see. Any ideas? Thanks in advance on any insight to depanelizing without leaving witness marks on the F
Electronics Forum | Wed May 31 07:16:06 EDT 2017 | stephendo
Don't rule out the possibility that the board shop depanelized it and it was assembled after depanelization. Been there, dealt with it, expletives deleted.
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 Nov 25 17:21:17 EST 1998 | Michael Allen
A word of caution: thick webs (i.e., shallow score grooves) can result in scrapped boards, especially if you've got the dual-wheel-type score breaking machine. I discovered recently that shallow score grooves, combined with DULL knife-edge guides on
Electronics Forum | Fri Jun 17 16:15:41 EDT 2011 | rway
One problem you may have with deeper scoring is not so much broads breaking apart unintentionally, but warping upstream while on the SMT line which can cause sagging. This may give you transport issues from one machine to another, and if you have an
Electronics Forum | Tue Nov 24 13:51:23 EST 1998 | Michael Allen
What kind of "slice and dice machine" do you use? I assume you're referring to what I call a score-breaker -- a device to separate the board from the panel (or from the adjacent board) by crushing the score-line WITHOUT bending the panel or the boar
Electronics Forum | Tue Jul 14 20:16:45 EDT 1998 | Wayne Bracy
| Dear Colleagues: Most responses will be individual involvements with either rotors or the old pizza type cutters. Depending upon how your multi-up boards are designed will determine the actual spacing that you have for the singulation process. (r
Electronics Forum | Wed Dec 22 12:21:51 EST 1999 | Dave F
Jake: This'll get you started: 1 Read the archives 2 primary approaches to paneling are; * Moise bites * Singulation * Routing * Scoring * Shearing 3 Major depaneling technologies are: * Singulation (Wand 708.459.2400fax2421, Circuit Technolo
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 | Fri Dec 24 10:51:29 EST 1999 | Bob S
If you have decent volume with high mix or are a contract shop, the most flexible method is a software controlled router. Using pre routed boards with tabs is not a bad way to go but there is a price for the pre routing that may more than justify the
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