Nope, and read why.
I think NASA banned lead solder. NASA then had so many problems due the ban that they everyone just ignored the ban and used lead solder.
I think NASA banned lead solder. NASA then had so many problems due the ban that they everyone just ignored the ban and used lead solder.
I think BMW had a monster problem involving 10s of thousands of cars due to the whisker problems in the electronics.
Amazing - the world jumps up & down about electronic lead, and Monsanto is allowed to destroy the world's agriculture with genetic seed engineering.
I think NASA banned lead solder. NASA then had so many problems due the ban that they everyone just ignored the ban and used lead solder
It is interesting that the exemptions include aerospace, automotive and "servers, switches, routers, cell sites and other telecommunication equipment that constitute the global Internet and phone systems".
Not a chance. Nasa has never banned lead solder. They have always required it's use becasue of the combination of tin whisker issues and not enough long term reliability data on lead free solders.
Yes any place that performance was critical you could use the lead solder ROHS exemption. We use it on all the stuff we manufacture. We won't go near lead free solders.
You have to remember though that ROHS is not just about lead. There are several compounds and metals like cadmiium that are also covered under the standard.
Rob
Yes while we look back and laugh at the radium dial painters, the story of the cadmium/battery factories is no less a disaster.
Not a chance. Nasa has never banned lead solder. They have always required it's use because of the combination of tin whisker issues and not enough long term reliability data on lead free solders.
OK, maybe not a ban of lead solder, but there were problems with lead free solder use: Tin whiskers caused the failure of the Galaxy IV satellite in 1998.
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Or asbestos.....
OK, maybe not a ban of lead solder, but there were problems with lead free solder use: Tin whiskers caused the failure of the Galaxy IV satellite in 1998.
whiskers grew on pure tin plated electromagnetic relays.
It's not a case of superlatives. I think if you go back and look at the history of heavy metals and pollution, you'd be surprised by their prevalence. As I said on another site, go back and look up the history of Cadmium poisoning. Or the preponderance of lead in our society and children eating lead paint. How soon we forget.
Hmmm... Sounds like a guy who has not had a house of kids... Kids will put anything into their mouths, lick walls, etc. However, most of the exposure comes from pre-1978 houses with lead paint on the walls, then kids with wet/sticky hands touch the walls, then put their hands into their mouths. Another problem was thqat a lot of toys back then, and they still find them today, have lead in the paint, and kids chew on the toys. And so forth...
Al also has problems with sintering (spikes) and I am sure there are others (I am not a metallurgist).
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