Measuring and testing – Liquid analysis or analysis of the suspension of solids in a...
Patent
1995-04-21
1998-10-27
Brock, Michael
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
73 6448, 228103, G01N 1300
Patent
active
058279512
ABSTRACT:
A new test method to quantify capillary flow solderability on a printed wiring board surface finish. The test is based on solder flow from a pad onto narrow strips or lines. A test procedure and video image analysis technique were developed for conducting the test and evaluating the data. Feasibility tests revealed that the wetted distance was sensitive to the ratio of pad radius to line width (l/r), solder volume, and flux predry time.
REFERENCES:
patent: 4467638 (1984-08-01), Greenstein
patent: 4529116 (1985-07-01), Gutbier
Giversen Terri
Hosking Floyd M.
Jellison James L.
Reed Jimmy R.
Short Bruce
Brock Michael
Sandia National Laboratories
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