Filter component having ESD protection function
AssigneeMurata Manufacturing Co., Ltd.
InventorToshiyuki Nakaiso
Life of this patent
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Abstract
A filter component having an ESD protection function that includes a mounting inductor component and a base board. An ESD protection element and a capacitor are formed in the base board, which includes a semiconductor substrate, and front and back rewiring layers. First and second mounting component connection terminal conductors to which the mounting inductor component is connected are formed on an outer surface of the front rewiring layer. Moreover, a first, second and third external connection terminal conductors are formed on an outer surface of the back rewiring layer. The ESD protection element is formed in the semiconductor substrate and the capacitor is formed in one of the front rewiring layer or the back rewiring layer.
Claims20
A filter component having an ESD protection function, comprising:
- an inductor connected between a first terminal and a second terminal;
- an ESD protection element connected between the first terminal and a ground terminal;
- and
- a capacitor connected between the second terminal and the ground terminal,
- wherein the filter component comprises a mounting inductor component that includes an inductor conductor pattern disposed in a magnetic material and forming the inductor, and
- wherein the ESD protection element and the capacitor are disposed in a base board that includes:
- a semiconductor substrate with the ESD protection element formed therein,
- a front rewiring layer disposed on a first surface of the semiconductor substrate, and
- a back rewiring layer disposed on a second surface of the semiconductor substrate that opposes the first surface,
- wherein the mounting inductor component is connected to first and second mounting component connection terminal conductors disposed on an outer surface of the front rewiring layer,
- wherein the first terminal, the second terminal, and the ground terminal are disposed on an outer surface of the back rewiring layer, and
- wherein the capacitor is formed in one of the front rewiring layer and the back rewiring layer.
A filter component having an ESD protection function, comprising:
- a mounting inductor component that includes an inductor;
- and
- a base board that includes:
- a semiconductor substrate with an ESD protection element formed therein,
- a first rewiring layer disposed on a first surface of the semiconductor substrate and having first and second mounting component connection terminal conductors disposed on an outer surface thereof and connected to the mounting inductor component,
- a second rewiring layer disposed on a second surface of the semiconductor substrate that opposes the first surface, the second rewiring layer having a first terminal, a second terminal, and a ground terminal disposed on an outer surface thereof, and
- a capacitor formed in one of the first and second rewiring layers and connected between the second terminal and the ground terminal,
- wherein the ESD protection element is connected between the first terminal and the ground terminal.
Dependencies are inferred from the claim text.