Chip operating temperatures

[Jay Snyder]

On Tue, 24 Sep 1996, Al Grippo wrote:

>   IC chips for automotive use are generally specified as having operating 
> temperatures from -40 deg C to 125 or 150 deg C.  The 68332 chips bought in the 
> group pcb buy were rated 0 deg C to 70 deg C (32 deg F to 158 deg F).  I'm sure 
> these are ok for prototypes, but is anyone concerned about them lasting 50-100 
> k miles in a real environment ?
> 
>   Most of the critical parts for the board which I have accumulated are in the 
> automotive temperature range, but I have not been able to get the 68332 or sram 
> chips in this range.  I know the part numbers, but was told by several major 
> suppliers (newark, future, hallmark) that these industrial/ milspec chips are 
> not stock items and must be ordered in large quantities. The same applies to 
> sram (the highest industrial range here is -40 deg C to 70 deg C). Is anyone 
> interested in a group buy for these ?
> 
>  Al Grippo

Commercial Temp's should be OK if you mount the computer in the passenger
side of the firewall.   Most ECM's are above/behind the glove box, and
others are under one of the front seats.

J.