Electronics Forum | Mon Sep 08 14:29:04 EDT 2008 | davef
�Another direct measurement to determine resistivity values (i.e. of remaining no-clean residues) can be performed through impedance spectroscopy. The surface resistance underneath chip resistors and capacitors can be determined to show the improveme
Electronics Forum | Wed Mar 14 22:41:03 EST 2001 | CAL
There are also Process monitoring tools that mount directly to your blades and monitor the paste. Impedance Spectroscopy is the process monitoring theory behind the tool. It works by having good sample data logged that the monitoring tool can compare
Electronics Forum | Sat Sep 25 07:07:02 EDT 1999 | Brian
| I need a memory jog. What is the term for the growth of conductive contamination after a board is in storage or field? | There are several different mechanisms which can cause this. In reality, ionic contamination is the root cause for many of the
Electronics Forum | Thu Aug 05 06:29:18 EDT 1999 | Graham Naisbitt
| | | We're getting field failures in a high impedance portion of the circuit. Think the unpopulated pc card has contaminates because we were able to grow dendrites by applying a 9 volt battery across the suspected pad, placed a drop of de-ionized w
| 1 |
