The development of Quantum technologies requires control and readout electronics with high complexity. The electronics needs to be in close vicinity to the quantum circuits. Superconducting Qubits are one of the most promising approaches for a solid state solution for quantum computing. The scientific challenge discussed in this talk is the investigation of semiconductor technologies for very low temperatures. We analyze field effect transistor models and fundamental circuit performance for operation at 3K and below. We discuss technological process modifications and design restriction to enable semiconductor circuit operation and show first experimental results.