Ok, let me say right here, I really was NOT going to try and make up a
"Question of the Week" just for something to do. If you guys WANT to
discuss different topics on a regular basis, I'm all for it. but I honestly
need to ask about this (I'm not just "stirring the pot").
So I'm showing my ignorance by asking this, but I'm not sure where to go
for help...

During the transition to meeting RoHS requirements and designing for RoHS
compatibility we have begun specifying a higher quality of material than we
used to, conforming to IPC-4101/126

What I would like to understand is:
How to know when I should be looking for a EVEN BETTER material (related to
high-temperature applications and long-term thermal cycling). What IS the
next step up? What would be used in an automotive engine compartment, for
example?

I am usually designing products like displays that are in a more benign
environment,
but where can I learn more about this?

Jack


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