Z-directed capacitor components for printed circuit boards
View Patent ↗A Z-directed capacitor component for insertion into a printed circuit board while allowing electrical connection to internal conductive planes contained within the PCB. In one embodiment the Z-directed capacitor component utilizes semi-cylindrical metallic sheets. In another embodiment, stack annular metallic disks are used. The Z-directed capacitor component mounts within the thickness of the PCB allowing other components to be mounted over it. The body may contain one or more conductors and may include one or more surface channels or wells extending along at least a portion of the length of the body. Methods for mounting Z-directed components are also provided.
1. A Z-directed component for mounting in a PCB having a mounting hole having a depth D therein, comprising:
a body comprising:
a top surface;
a bottom surface;
a side surface;
a cross-sectional shape that is insertable into the mounting hole in the PCB;
a top portion;
a bottom portion; and
a plurality of support members intermediate the top and bottom portions of the body wherein the top portion and the bottom portion of the body and each support member has a center opening and a pair of opposed openings on an edge thereof with the opposed openings of the top and bottom portions and the plurality of support members forming a pair of opposed channels on the side surface of the body, each support member comprising:
an annular plate mounted on a surface of the support member, the annular plate having a center opening having a dimension that is larger than the center opening in the support member and an outer dimension that is less than the outer dimension of the support member on which it is mounted, the annular plate connecting with one opening in the pair of opposed openings in the support member;
a conductor extending the length of the body between the top and bottom surfaces of the body and passing through the center openings of the plurality of support plates and the top and bottom portions of the body; and
a pair of conductive traces, one on each of the top and bottom surfaces of the body electrically connected to an end of the conductor adjacent thereto and extending therefrom toward an edge of the body, the conductive traces and conductor creating a signal path through the Z-directed component,
wherein the plurality of support members are arranged such that the annular plate of one support member electrically contacts one of the opposed channels while the annular plate on the next support member electrically contacts the other one of the opposed channels.
2. The Z-directed component of claim 1 wherein the support members are a dielectric material.
3. The Z-directed component of claim 2 wherein the body further comprises a plurality of dielectric disks interleaved with the support members, each dielectric disk having a center opening therethrough for receiving the conductor therein and a pair of opposed openings on an edge thereof with the opposed openings of the top and bottom portions, the plurality of dielectric disks and the plurality of support members forming the pair of opposed channels on the side surface of the body.
4. The Z-directed component of claim 1 wherein the body further comprises a connection feature connected to an end of the conductor and selected from one of a conductive pad, a pogo-pin, and a spring.
5. A Z-directed component for mounting in a PCB having a mounting hole having a depth D therein, comprising:
a body comprising:
a top surface;
a bottom surface;
a side surface;
a cross-sectional shape that is insertable into the mounting hole in the PCB;
a top portion;
a bottom portion; and
a plurality of support members intermediate the top and bottom portions of the body wherein the top portion and the bottom portion of the body and each support member has a center opening and a pair of opposed openings on an edge thereof with the opposed openings of the top and bottom portions and the plurality of support members forming a pair of opposed channels on the side surface of the body, each support member comprising:
an annular plate mounted on a surface of the support member, the annular plate having a center opening having a dimension that is larger than the center opening in the support member and an outer dimension that is less than the outer dimension of the support member on which it is mounted, the annular plate connecting with one opening in the pair of opposed openings in the support member;
a conductor extending the length of the body between the top and bottom surfaces of the body and passing through the center openings of the plurality of support plates and the top and bottom portions of the body;
a pair of conductive traces, one on each of the top and bottom surfaces of the body electrically connected to an end of the conductor adjacent thereto, the conductive traces and conductor creating a signal path through the Z-directed component,
wherein the plurality of support members are arranged such that the annular plate of one support member electrically contacts one of the opposed channels while the annular plate on the next support member electrically contacts the other one of the opposed channels; and
an electrical connector interconnecting the conductor with at least one of the annular plates.
6. A Z-directed component for mounting in a PCB having a mounting hole having a depth D therein, comprising:
a body comprising:
a top surface;
a bottom surface;
a side surface;
a cross-sectional shape that is insertable into the mounting hole in the PCB;
a top portion;
a bottom portion; and
a plurality of support members intermediate the top and bottom portions of the body wherein the top portion and the bottom portion of the body and each support member has a center opening and a pair of opposed openings on an edge thereof with the opposed openings of the top and bottom portions and the plurality of support members forming a pair of opposed channels on the side surface of the body, each support member comprising:
an annular plate mounted on a surface of the support member, the annular plate having a center opening having a dimension that is larger than the center opening in the support member and an outer dimension that is less than the outer dimension of the support member on which it is mounted, the annular plate connecting with one opening in the pair of opposed openings in the support member;
a conductor extending the length of the body between the top and bottom surfaces of the body and passing through the center openings of the plurality of support plates and the top and bottom portions of the body; and
wherein the plurality of support members are arranged such that the annular plate of one support member electrically contacts one of the opposed channels while the annular plate on the next support member electrically contacts the other one of the opposed channels.
7. The Z-directed component of claim 6 wherein the support members are a dielectric material.
8. The Z-directed component of claim 7 wherein the body further comprises a plurality of dielectric disks interleaved with the support members, each dielectric disk having center opening therethrough for receiving the conductor therein and a pair of opposed openings on an edge thereof with the opposed openings of the top and bottom portions, the plurality of dielectric disks and the plurality of support members forming the pair of opposed channels on the side surface of the body.
9. The Z-directed component of claim 6 wherein the body further comprises a connection feature connected to an end of the conductor and selected from one of a conductive pad, a pogo-pin, and a spring.
10. The Z-directed component of claim 6 further comprising a pair of conductive traces, one on each of the top and bottom surfaces of the body electrically connected to an end of the conductor adjacent thereto and extending therefrom to an edge of the body, the conductive traces and conductor creating a signal path through the Z-directed component.