Stuart Meier <stuartmeier@RYG1.FREESERVE.CO.UK> wrote:

>Today I *carefully* shot an ISD1416 speech chip with freezer spray, and like
>the sad-departed PIC, it was fine as it dropped into hypothermia.
>
>BAD news. It hung up its clogs as it WARMED up, just like it's departed
>friend, the PIC.
>
>Did both die from thermal shock, perhaps the connections from the die to the
>outer package being unable to keep up with the thermal expansion of the
>extremities?
>

The failure was almost certainly due to static discharge. Freezer
spray is well known for causing similar problems. 

Low charge freezer spray is apparently available although i've never
tried it.