Electronics Forum | Tue Jul 31 15:29:45 EDT 2001 | hinerman
Research was done into the deflection of a totally unsupported (topside) PCB of 0.050" thickness. A dial indicator was placed on the surface and the tooling was set. The deflection ranged from 0.005" to 0.007". This is minor when you consider th
Electronics Forum | Mon Dec 21 17:50:55 EST 1998 | anamonus
| I have a mixed technology board ranging from 50 mil pitch devices to 20mil Qfp's to PBGA-352 at 1.27mm, and 6 Intel uBGA-48 at 30 mil pitch. With all these different package types i'm torn between using a 4 or 5mil thick stencil. The ball dia. is 1
Electronics Forum | Thu Jul 06 13:36:37 EDT 2006 | SWAG
We've had much trouble with flex circuits. As previously mentioned, you must have local fids for the board or the BGA itself (if panelized). Other troubles we experience are drilled holes for pinned connectors. Unless the PCB manufactur has some w
Electronics Forum | Thu Dec 07 13:51:59 EST 2006 | ganoi
I need advices as to how a gap between the bottom of an LED (1209-package) and the PCB can be controlled on a small rigid-flex PCBA? The problem that we experience is due to tight tolerance in the design of our molded housing in which this PCBA is as
Electronics Forum | Fri Feb 22 00:20:41 EST 2002 | djarvis
0.005" for a distance of 0.120". I supply the cad file - they supply the blades - SIX PER SHIM - $300. Try it, you'll like it! Take yer set of overpriced, dooverlacky, hoity toity, rickerpoodley and a fandoogally, titanium, teflon, whacko the didd
Electronics Forum | Fri Dec 07 15:12:56 EST 2007 | teodor
Hello , I would like to collect your valued opinions what is better for beggining . Samsung CP-45NEO Juki 2060 Light Feeder Positions (8 mm) 104 80 PCB Size (min - max) 50x30-460x400 mm 50x30-410x360 m
Electronics Forum | Mon Jan 07 20:37:15 EST 2002 | davef
For soldered areas, we like to keep gold thickness substantially below the maximum you propose. Search the fine SMTnet Archives for our discussions on the topic of acceptable levels of gold with solder connections. Let�s fix this �no one seems be s
Electronics Forum | Thu Jun 13 21:44:21 EDT 2002 | jkhiew
Hi all, * Defect : termial to terminal touching btw two melfs body that created short circuit. * Clearance : 0.8mm btw two melfs body. * Size melf : diameter=2.4mm to 2.7mm, length=4.8mm to 5.2mm * Stencil opening : "v" shaped to minimise component
Electronics Forum | Wed Feb 09 21:45:48 EST 2000 | Dave F
Sal: Hey that customer standing around staring at you sound like fun, yeh right!!! Wolfgang makes good sense, but, in addition, I�d like to drill-down on board fabrication (har har har) a little bit (har har har) more. You say the holes are the cor
Electronics Forum | Tue May 30 09:52:21 EDT 2000 | Sal
Problems with dry joints on a 184 pin Berg connector with locating pins.Using a 0.005"screen, on a n-tek finished board and using Nitrogen. The problem is really intermittent.We tryed using a variety of placement forces using our siemens F5. The comp
