The main application areas for signal processing are telecom filters, proximity sensors, wideband signal transformers, pulse transformers and delay lines.
For filter and sensor applications, it requires medium permeability, low loss and high stability over periods of time. For wideband signal transformers which are frequently used in communication systems and digital networks such as ISDN and DSL, high permeability are needed.
In many electronic devices, it is necessary to delay pulses for a short, well defined time. The delay time is determined by the saturation flux in the ferrite core and the applied voltage. Requirements for the material are: high pulse permeability and high saturation flux density.