Thanks to all for the feedback... I will look into the "C" parts... and will look at past posts for some=20 particular part #s. I am looking at borehole applications and know that some of the big=20 companies have "favorite" parts... but keep them secret. Of course, we=20 are always looking for a low-cost part that will do the job of high-part=20 proven part. And since I am looking at downhole applications, the cooling/solution=20 can't be temporary. Lastly, I know of some $5 parts that operate to 180C, but some=20 peripherals fail -- CAN, for example. On 2013-10-10 9:45 PM, John Gardner wrote: > This has come up on the list before. Some pretty remarkable > > figures were quoted for some of the "C" parts. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .