Lead is the metal that protected
Superman from the devastating effects of kryptonite. Lead alloys
are often used as solders in microwave electronics.
Lead in electronics has been
banned in Europe, because it reduces IQ points when it gets into
your brain. Any ban on hazardous materials
is a good thing, but is a major problem, because the replacement
plan is often to use pure tin plating, which can cause tin whiskers
(see tin). Incidently, over 90% of all gasoline
sold in Africa and the Middle East is still leaded, while over 30%
of Asian and Latin American gasoline is also leaded. What's a few
chip resistors? What about banning lead in car batteries? Ammunition?
is no similiar lead-in-electronics ban in the United States, but
many component vendors are phasing out parts with lead anyway. Uncle
Sam is going crazy, looking for military parts that don't contain
pure tin plating!
|Formula or Composition:
Coefficient of Resistivity (TCR):
|| 35 W/m°C
Coefficient of Expansion (TCE):
|| 29.1 ppm/°C