Electronics Forum | Wed Apr 16 11:29:31 EDT 2008 | mmjm_1099
Per Tony SMT Here are more photos: Q15, Q16, Q17 represent good transistors on a 1 up board with the transistor locations that are in question. Q13 is a good transistor on a bad 2up board. Right next to it is Q14 a bad transistor on a bad 2 up boa
Electronics Forum | Wed Aug 25 03:44:44 EDT 1999 | Charles Stringer
Mine's a fuji MX2700 1800 x 1200 pixels. +ve Small easy to use (operators do their own build guides) 8mb Smartmedia and floppy adapter make it useable on almost any PC = 8 pictures on best resolution Fair macro facility (you can identify 0603 compon
Electronics Forum | Thu Aug 25 10:32:03 EDT 2005 | davef
IPC-2221A, Generic Standard on Printed Board Design, the base document that covers all generic requirements for printed board design, regardless of materials. From there, the designer can choose the appropriate sectional standard for a specific techn
Electronics Forum | Wed May 21 15:13:56 EDT 2014 | wendynguyen234
Sarason, thank you very much for your support. There is an ISA interface board with just ribbon cable from window 95 PC to VME I/O DPRAM ver. 2 board in the same VME rack that has MVME-162-110 (CPU board), DSP, ADDA, AXIS & CONT boards. Do you think
Electronics Forum | Fri Apr 23 13:00:35 EDT 2010 | dwonch
Hi all, The board shop finally got back to me with some results. They did find residue present on some of the pads. They have sent a board out for evaluation to learn what it is. Hopefully from that we can determine the root cause. The good news i
Electronics Forum | Fri Aug 29 09:39:08 EDT 2014 | rgduval
I'll try to deal with the issues as you've presented them. 1. Blistering/delamination, shown in photo 2. The most likely cause of blistering/delamination like this is moisture in the boards. The moisture can get into the boards in multiple ways..
Electronics Forum | Tue May 23 20:44:13 EDT 2000 | Dave F
Sal: You and Wolfgang are spot on, but let's see if we can blow this out a bit. Before proceding to rattle on ... � PC Card. A credit card-size computer peripheral that add memory, mass storage, and I/O capabilities to computers in a rugged, compa
Electronics Forum | Tue Aug 27 22:07:45 EDT 2002 | davef
Pad. Land. A portion of a conductive pattern used as a termination area. Metal surrounding a hole on a printed circuit board. Mask. A material applied to allow selective etching, plating, or protection of the surface of a printed circuit board.
Electronics Forum | Tue Jun 06 13:02:44 EDT 2000 | eott
Charles, I am senior engineer in the environmental test lab for Agilent Technologies(HP Spin off). I am working on qualifying a large SCI(Solder Collumn Interposer) CBGA package. The package is 1mm pitch. The balls are .72mm. The number of balls ar
Electronics Forum | Thu Aug 23 15:38:58 EDT 2001 | mparker
Bingo - the mylar is the problem. Ask the fab vendor what storage and humidity controls they use on the photo tools. The films can changed geometry from day to day depending on the ambient environment. What controls are used during production? The ra
