The discrepancy of the bandwidth is due to the joint influence of HASL
processing, the displacement of the pin of connector, and the tighten levels between the pin and PCB board, while the multiple scattering between the probe and antenna or the metal connector may lead a higher gain.
(2,3) Although the etiology of HASL
is unknown, it is postulated that heating of heroin releases pathogenic contaminants, likely a lipophilic impurity given the high lipid content of myelin.
is not readily available and consistent flatness is difficult.
omits to mention is that it gets harder to land a job the longer one has been out of school, all the worse in a few months when a flood of new law graduates hit the market.
has been working well for many years, is the predominant surface finish used in the industry, and is also the cheapest PCB available.
The surface finish was a eutectic HASL
, and the solder paste was a water-soluble SnPb.
The Anti-terrorism squad of the Maharashtra Police hasl
not been successful in arresting three other accused in the case.
As for surface finishes, hot-air solder leveling or HASL
is used for eutectic PCBs, but is not appropriate for lead free assembly.
In order to meet the requirements of RoHS, including the elimination of lead from electronic components, the printed circuit board industry is moving away from lead bearing hot air solder leveled (HASL
) final finishes to alternative materials.
Special thanks to Kendee Yamaguchi and reference librarian Kerry Fitz-Gerald for their timely and thorough research assistance, as well as to Dean Rudy Hasl
and Associate Dean Janet Ainsworth for their support of this work through a summer faculty research grant.
* Substitutes for HASL
and good for auto assembly lines
--The new Specialised Commercial Court Centre in Johannesburg hasl
increased conviction rates three-fold and the number of cases completed by ten-fold, rapidly moving towards the improvements recorded by the Pretoria Pilot initiative.