Tech Tree / Semiconductors semiconductors Semiconductors Component Hard import Seed import TRL Mars 1 / 9 Energy intensity — Required by 4 Requires 0 Ultra-pure Si, photolithography, dopants, HF etch, clean rooms. The colony's true umbilical. Required by Cryo instrumentation & control Component · built_from Machine tools Component · built_from Power grid Subsystem · built_from PV panel Component · input