Multi-layered component
View Patent ↗A multi-layered component is disclosed, including at least one inductive region, wherein the inductive region includes a ferrite ceramic. The inductive region has electrode structures that form at least one inductance. The multi-layered component has at least one capacitive region, wherein at least one capacitive region includes a varistor ceramic. The capacitive region forms at least one capacitance. At least one inductive region and at least one capacitive region form at least one LC filter.
1. A multi-layered component comprising:
an inductive region comprising a ferrite ceramic and having an electrode structure that forms at least one inductance, wherein the ferrite ceramic comprises a ceramic selected from the group consisting of NiZn ferrites, NiCuZn ferrites, NiZnCo ferrites and hexagonal ferrites;
a capacitive region comprising a varistor ceramic and forming at least one capacitance; and
a further capacitive region forming at least one further capacitance; and
a resistor arranged on a surface of the multi-layered component and connected in series with the inductive region;
wherein the multi-layered component comprises a symmetric arrangement of the capacitive region, the inductive region and the further capacitive region, the symmetric arrangement comprising the varistor ceramic as dielectric material and the ferrite ceramic as magnetic material having a construction with the following layers:
n layers of varistor ceramic, followed by
m layers of ferrite ceramic, followed by
n layers of varistor ceramic, wherein n and m are numbers and n ≧1 and m ≦1;
wherein the symmetric arrangement is symmetrical with respect to a plane that lies parallel to the layers;
wherein the varistor ceramic comprises a ceramic selected from the group consisting of ZnO—Bi—Sb ceramic and ZnO—Pr;
wherein the capacitance and the further capacitance are connected in parallel with the inductance in the configuration of a pi-type LC filter; and
wherein two varistors are connected in parallel with the LC filter, the varistors serving as ESD protection elements for the LC filter.
2. The multi-layered component as claimed in claim 1 , wherein the ferrite ceramic comprises NiZn ferrites.
3. The multi-layered component as claimed in claim 1 , wherein the ferrite ceramic comprises NiCuZn ferrites.
4. The multi-layered component as claimed in claim 1 , wherein the ferrite ceramic comprises NiZnCo ferrites.
5. The multi-layered component as claimed in claim 1 , wherein the ferrite ceramic comprises hexagonal ferrites.
6. The multi-layered component as claimed in claim 1 , wherein the varistor ceramic comprises a ZnO—Bi—Sb ceramic.
7. The multi-layered component as claimed in claim 1 , wherein the varistor ceramic comprises a ZnO—Pr ceramic.
8. The multi-layered component as claimed in claim 1 , wherein the resistor has linear properties.