A packaged device is obtained using an innovative package approach that allows integration of miniature planar magnetics into standard low-cost semiconductor packages with electronic and electrical components, where those components can be C&W andor SMD types. The invention further relates to a reactor for carrying out the process, which comprises at least one isothermal reaction zone and an adiabatic reaction zone which are arranged in a reactor shell, with each isothermal reaction zone being configured in the form of a jet loop reactor and the adiabatic reaction zone being configured as a bubble column. The two transistors form a pair in which one transistor has a wide variability in threshold voltage and the other transistor has a narrow variability in threshold voltage. An antimicrobial agent may be added to the housing material to inhibit the growth and proliferation of fungi, molds, bacteria, and so forth.