See this page on extreme temperature electronics for a good discussion of what is available on the electronics side. The short answer is, there are discrete co

See this page on extreme temperature electronics for a good discussion of what is available on the electronics side. The short answer is, there are discrete components that have been demonstrated to temperatures higher than Venus's 460C but little commercially available. In particular no integrated circuits. http://www.extremetemperatureelectronics.com/tutorial1.html http://www.extremetemperatureelectronics.com/tutorial1.html