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non-RoHS part containing too much material or inable to survive lead free solder temperatures?

Question asked by loek on Aug 4, 2015
Latest reply on Aug 25, 2015 by MaheshN

L.S.

 

We are trying to extend the life of one of our products containing the ADSP-2185LKST-115.

There is no RoHS drop-in replacement for that one (unless it is allowed to run the ADSP-2185LBSTZ-133 on the same low 7,3MHz clock as the -115).

 

Now we wonder whether the non-RoHS marking of this type is because it contains too much lead?

Or is it because the component does not withstand the lead-free wave solder heat profile?

 

In the first case: is it because the pins have a lead containing finish? Is it impossible to mount these reliably with lead frree solder (dissolving it to a low enough percentage of lead mass) ?

In the second case: can we try solder it seperately by hand, maybe while cooling the body somewhat?

 

Thanks for your reading my question!

Loek Gijben

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