Miniature SMT housing for electronics package
A housing, for surface-mount technology (SMT), accepts any electronics package that is mounted on a circular substrate. The housing including the assembled electronics package forms an SMT housing assembly. The SMT housing assembly is placed directly onto the surface of a printed circuit board (PCB). The SMT housing assembly is soldered to the PCB using standard soldering techniques, establishing an electrical connection between the electronics package and the PCB.
1. A non-conductive miniature SMT housing, comprising:
a non-conductive shell having a first end and a second end;
a cylindrical cavity having a preselected diameter located within the shell;
an annular counterbore having a preselected diameter, the preselected diameter of the annular counterbore being larger than the preselected diameter of the cylindrical cavity, the annular counterbore located at the first end of the shell extending a preselected axial length and forming a shoulder at the first end;
a flat region extending tangentially along the shell; and
a plurality of feet, the feet positioned opposite the flat region, each of the feet extending parallel to a central axis of the shell, each of the feet including a semi-circular cavity of predetermined radius.
2. The non-conductive miniature SMT housing of claim 1 wherein the housing further comprises a material having a maximum temperature of use of at least 375° F.
3. The non-conductive miniature SMT housing of claim 1 wherein the housing further comprises a material having a maximum temperature of use of between 375-420° F.
4. The non-conductive miniature SMT housing of claim 2 wherein the material is a nonconductive injection-moldable polymeric material.
5. The non-conductive miniature SMT housing of claim 4 comprising polyphenylsulfone.
6. The non-conductive miniature SMT housing of claim 4 comprising polyphenylene sulfide.
7. The non-conductive miniature SMT housing of claim 1 wherein the second end further comprises an aperture in fluid communication with the cylindrical cavity.
8. A non-conductive miniature SMT housing assembly, comprising:
a non-conductive shell having a first end and a second end;
a cylindrical cavity having a preselected diameter located within the shell;
an annular counterbore having a preselected diameter, the preselected diameter of the annular counterbore being larger than the preselected diameter of the cylindrical cavity, the annular counterbore located at the first end of the shell extending a preselected axial length and forming a shoulder at the first end;
a flat region extending tangentially along the shell;
a plurality of feet, the feet positioned opposite the flat region, each of the feet extending parallel to a central axis of the shell, each of the feet including a semi-circular cavity of predetermined radius;
an electronics component having a plurality of axial leads, the component having a flange of circular cross section and a body;
wherein the flange has a diameter no greater than the preselected diameter of the annular counterbore of the housing and the body has a diameter no greater than the preselected diameter of the cylindrical cavity of the housing; and
wherein the each of the plurality of axial leads from the electronics component are arcuately bent into one of the plurality of feet.
9. The non-conductive miniature SMT housing of claim 8 wherein the second end further comprises an aperture in fluid communication with the cylindrical cavity.