[sdiy] SDIY vs RoHS

[Peter]

If you read the "law", you will see that solders are exempt from the 
regulation...

P.


----- Original Message ----- 
From: "harrybissell" <harrybissell at prodigy.net>
To: "Paul Schreiber" <synth1 at airmail.net>
Cc: "Rainer Buchty" <rainer at buchty.net>; <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, May 22, 2005 8:54 PM
Subject: Re: [sdiy] SDIY vs RoHS


> What the lead really does is give you a component with a really good
> shelf life.  You could make them without lead, easily.  They might be good 
> for one
> year before they become unsolderable.
>
> "they will have to pry my lead solder from my cold, dead fingers !!!"
>
> H^) harry
>
> Paul Schreiber wrote:
>
>> >> I'd start worrying about the vanishing *DIP* package after July 2006 
>> >> (RoHS
>> >> requirements).
>> >
>> > What (chemical) difference exists between DIP/DIL and SO/QFP?
>>
>> DIP packages contain lead (in the solder that coats the pins). SOICs 
>> started
>> converting over to lead-free tin plating about 1 year ago. By the end of 
>> this
>> year, all SOIC/resistors/caps/etc will be lead-free. I suppose 
>> *gold-plated
>> ceramic DIPS* are exempt :)
>>
>> If you look in the latest Mouser and Digikey catalog, you will see more 
>> emphasis
>> placed on lead-free parts.
>>
>> Technically, you can use leaded solder IF the weight of the lead 
>> component is
>> below like 85% of the TOTAL weight. But regular 60-40 type solder is 
>> about 94%
>> lead (by weight, not by composition).
>>
>> But DIPs are not the only problem. What about the leads on resistors? 
>> Pots?
>> Connectors? It gives me a headache.
>>
>> Paul S.
>
>
>