[time-nuts] New frequency standard, Mercury better than Cesium?

[Chuck Harris]

Hi Said,

I'm inclined to believe that a fairly short period of time after
the world goes lead free with electronics, there are going to be
disastrous numbers of failures.  Basically, the electronics industry
is being asked to forget all of the advances it has made in manufacturing,
and production, and reinvent the wheel, in a big way.  I can only hope
that sanity will return, and RoHS will be modified to something more realistic.

Just consider the amount of lead in a car battery, and consider how
one improperly discarded car battery will introduce more lead into the
environment than several metric tons of improperly discarded electronic
equipment.

As to China, they are already ready to make things any way you want
to pay them to.

-Chuck

SAIDJACK at aol.com wrote:
> Hi Chuck,
>  
> yes, all test equipment is excempt from RoHS, until between 2009 -  2011. 
> Europe is not sure how long they will keep this exemption in  effect.
>  
> There are so many legacy products that are vital to the industry and that  
> will not be re-designed that I think the exemptions will continue beyond  that.
>  
> Doing Lead-free has many reliability issues, let me just mention shorts  
> caused by tin-whiskers, and the problems of visually identifying a cold-solder  
> joint... The assembly houses I have talked to hate doing lead free work for  
> critical, expensive items.
>  
> How much test equipment ends in a land fill? Probably not too much due to  
> all of the gold used in it, the collectors' value etc.
>  
> Also, who is going to test all the products for compliance? It's probably  
> very easy to get away with not complying. I would guess this will happen to a  
> lot of products made in China...
>  
> bye,
> Said
>  
>  
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