Electronics Forum | Wed Feb 15 04:54:18 EST 2006 | Rob
Have you taken the plating thickness into consideration as this will happen after the drilling?
Electronics Forum | Fri Mar 15 14:27:21 EST 2002 | stefwitt
Assuming, you have nothing on the other board side, I would drill a hole through the trace and board with a step drill and a drill press. If you adjust the depth control carefully the wider step of the drill scratches the surfaces of the trace to mak
Electronics Forum | Thu Dec 05 02:15:12 EST 2019 | sssamw
IPC 2221B mentions a minimum clearance of 0.5 mm between adjacent holes. A drill-to-drill spacing of 20 mils is a standard value in manufacturer design rules. For small annular rings and pad-to-pad clearance, the minimum via distance is often defin
Electronics Forum | Thu Nov 26 00:34:30 EST 1998 | Brian G.
Certain board designs require the unavoidable use of non-plated holes and slots. Presently, this requires a trip back to the drill house to open up the aforementioned holes, to remove the unwanted plating. In situations requiring non-plated holes and
Electronics Forum | Fri Aug 05 18:10:11 EDT 2011 | davef
* Attaching thermocouple to CSP or BGA is a challenging task. Usually a hole is drilled at the center and the thermocouple is routed through the bottom of the board and to the area of interest. In particular, since the CSP stand off is very small, a
Electronics Forum | Tue Oct 22 12:40:31 EDT 2002 | stjdavis
You might want to check out a microline drill from LPKF Laser. It can drill holes down to 2 mil and do 2 mil lines and spacings.
Electronics Forum | Tue Feb 20 14:39:59 EST 2018 | harlymh
Is it good practice to use a PCB mechanical drill hole as local fiducial? Would it increase my placement accuracy? Or should I stick to my panel fiducials? We're using a panel with 4 boards and we're trying to reach a 50 microns accuracy.
Electronics Forum | Sat Feb 12 08:13:48 EST 2005 | pemnut
I have seen BEC holes drilled wrong also. On a couple of products We run, We insert a Pem Nut. The insertion hole is too large for BEC to read. So We have the board house drill a small hole for each array, circuit. If these smaller holes are drilled
Electronics Forum | Fri Aug 18 11:26:08 EDT 2006 | Board House
Hi Mark, Couterbore is possible in two way's during PCB Manufacturing. Couterbore plated and non-plated. Meaning that the entire hole will either have to be Plated or Non-Plated. Prefered Methode is Plated, to accomplish this your PCB house would
Electronics Forum | Sat Apr 03 19:58:53 EST 2004 | Ken
I have used tooling holes and fiucial registration since the late '80's. In fact if your maximum "vision" tolerance is +/- 0.05mm, your in the same ball-park as locating pins. It is true that fiducial registration is more accurate. However, I woul
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