Surface mount filter device

A surface mount filter device comprising a device body including a plurality of electrical terminations located thereon, said device body including:

• an insulating substrate having a top surface and a bottom surface;
• a first conductive pattern in the form of at least one first capacitor plate defined on a top surface of the substrate;
• a dielectric layer located on top of the conductive pattern;
• a second conductive pattern located on said dielectric layer, said second conductive pattern defining at least one second capacitor plate in registry with said first capacitor plate to produce a capacitor device, said second conductive pattern further defining at least a portion of an inductor coil;
• a first layer of insulative polymer located above the dielectric layer and a first layer conductor channel in registry with said portion of said inductor coil, said first layer conductor channel containing a conductive material;
• and
• an insulative cover layer, wherein said dielectric layer comprises a thin layer dielectric material selected from a group consisting of SiNO and SiO.sub.2.

A surface mount filter device comprising a device body including a plurality of electrical terminations located thereon, said device body including:

• an insulating substrate having a top surface and a bottom surface;
• a first conductive pattern in the form of at least one first capacitor plate defined on a top surface of the substrate;
• a dielectric layer located on top of the conductive pattern;
• a second conductive pattern located on said dielectric layer, said second conductive pattern defining at least one second capacitor plate in registry with said first capacitor plate to produce a capacitor device, said second conductive pattern further defining at least a portion of an inductor coil;
• a first layer of insulative polymer located above the dielectric layer and a first layer conductor channel in registry with said portion of said inductor coil, said first layer conductor channel containing a conductive material;
• and
• an insulative cover layer, wherein said sealing cover is formed from a rigid insulative material selected from a group consisting of glass, glass-ceramic and alumina.

A surface mount filter device comprising a device body including a plurality of electrical terminations located thereon, said device body including:

• an insulating substrate having a top surface and a bottom surface;
• a first conductive pattern in the form of at least one first capacitor plate defined on a top surface of the substrate;
• a dielectric layer located on top of the conductive pattern;
• a second conductive pattern located on said dielectric layer, said second conductive pattern defining at least one second capacitor plate in registry with said first capacitor plate to produce a capacitor device, said second conductive pattern further defining at least a portion of an inductor coil;
• a first layer of insulative polymer located above the dielectric layer and a first layer conductor channel in registry with said portion of said inductor coil, said first layer conductor channel containing a conductive material;
• and
• an insulative cover layer, wherein said at least one first capacitor plate is not directly connected with any of said terminations.

A surface mount filter device comprising a device body including a plurality of electrical terminations located thereon, said device body including:

• an insulating substrate having a top surface and a bottom surface;
• a first conductive pattern in the form of at least one first capacitor plate defined on a top surface of the substrate;
• a dielectric layer located on top of the conductive pattern;
• a second conductive pattern located on said dielectric layer, said second conductive pattern defining at least one second capacitor plate in registry with said first capacitor plate to produce a capacitor device, said second conductive pattern further defining at least a portion of an inductor coil;
• a first layer of insulative polymer located above the dielectric layer and a first layer conductor channel in registry with said portion of said inductor coil, said first layer conductor channel containing a conductive material;
• and
• an insulative cover layer, wherein each of said second capacitor plates comprises a pair of second capacitor electrodes disposed over a respective at least one of said first capacitor plates to produce a respective equivalent capacitor element.