Electronics Forum | Tue Oct 07 12:35:10 EDT 2008 | andy_pal
Hi All, I am using COB on my DOUBLE SIDED PCB. lastly we used Eletrolytic Ni / Flash Gold Plating. Our Boards vias Failed the UL corrosion Test. we did some cross-section analysis and found 10.75 �m of Nickel and 0.022 um of Gold and as the Process
Electronics Forum | Tue Sep 20 15:00:26 EDT 2016 | awhite
Got it!!!!! On the main Operator Screen for the MPM UP2000, and under configuration (when logged-in under maintenance), it gives you ONLY the settings that the machine is set to....there are no drop-downs or options available to choose from. Very fr
Electronics Forum | Sat Jun 06 09:53:59 EDT 1998 | Earl Moon
GEOMETRIC DIMENSIONING AND TOLERANCING (GDT) Using and applying GDT to printed circuitry and assemblies is very much like applying it to any other design for manufacturing (DFM) or design for assembly (DFA) requirement using concurrent engineering (C
Electronics Forum | Sun Aug 26 12:40:59 EDT 2001 | stefwitt
I would like to enter the discussion by tossing some numbers in. First of all I don�t like the 3 Sigma value. 3 Sigma are 2000 defects per mio. if I remember correctly. This means, if you have 200 components on the board, then every 10 boards have on
Electronics Forum | Tue Apr 15 15:23:10 EDT 2003 | davem
I would agree with the advice given by previous poster's. "Buyer Beware" is the rule of the day. Especially when dealing with 3rd. party brokers. Keep an eye out for some of the teir 1 EMS corp's auctions. You can pick up some excellent deals on we
Electronics Forum | Thu Jun 24 23:57:42 EDT 2004 | George
Could anyone tell me the difference in PCB material Nelco13 and FR4? PCB dielectric material Nelco13 is quite new for me and I knew nothing about it. For imcoming quality control (IQC), I am asked to identify PCB made of FR4 and Nelco13. How to do th
Electronics Forum | Fri May 23 07:07:39 EDT 2003 | qp1
Please your comments for placing 0402 on CP4? Which are the difficulties to expect and how to threat them? How to adapt the feeders for the smaller interdistance of the tape?? Thanks
Electronics Forum | Mon Jun 12 14:33:40 EDT 2006 | pjc
IPC spec is V-score shall not be more than 1/2 board thickness. They should be V scoring 1/4 off top and 1/4 off bottom equally.
Electronics Forum | Fri May 23 12:18:59 EDT 2003 | vortex
First off is your CP4 0402 ready? Before we could begin placing 0402's we had to have a vision upgrade. Once you have that or are sure your machine can handle 0402 then you will have to get 8x2 feeders. There may be a way to rig an 8x4 feeder but i'm
Electronics Forum | Thu Jun 01 07:40:23 EDT 2006 | netellink
I have a Suzuki vision machine with 4 heads (SMT-1000VL). This machine is using the camera to inspect the nozzels (4 sets) in the nozzel tray changer every time it is going to change the nozzel(s) in the 4 heads. The problem I have is now the machine
