Have you ever tried soldering under a microscope? Sensors used with eddy current probes must be adapted to a high radiation zone. All sensors must withstand a certain level of radiation, on individual components from 100 to 700 mSv/h.
The components are tested for a radiaton dose rate and for a cumulative radiation dose. The smaller the component the less resistant it is to radiation levels. The components that are installed are of the highest quality, it often happens that we test components that have not yet been launched on the market, INETEC obtains these components straight from the manufacturer and includes them in our designs.