Recently most of major companies have general term as follows.

http://www.maxim-ic.com/sales/pdfs/terms-conditions.pdf
"20. USE OF SELLER’S GOODS IN LIFE SUPPORT, NUCLEAR AND CERTAIN OTHER APPLICATIONS.
Goods sold by Seller are not designed, intended or authorized for use in life support, life sustaining, nuclear, or other applications, including, but not limited to, transportation operating systems, in which the failure of such goods could reasonably be expected to result in personal injury, loss of life or severe property or environmental damage. Buyer acknowledges that use of Seller’s goods in such product applications is understood to be fully at the risk of Buyer and that Buyer is responsible for verification and validation of the suitability of Seller’s goods in such application. Buyer agrees that Seller is not liable, in whole or in part, for any claim or damage arising from use in such applications. Buyer agrees to indemnify, defend and hold Seller harmless from and against any and all claims, damages losses, costs, expenses and liabilities arising out of or in connection with such use."

Very reasonable. However, please consider why they must declare it explicitly. And small companies still prohibit to use their products for life support applications. They are afraid of lawsuits such as Dow Corning's Breast implant case.
I don't blame them on this matter, though it makes our development difficult.

Tsuneo