Sealed bulkhead electrical feed-through positioning control
An electrical feed-through, such as a PCB connector, involves at least one positioning protrusion protruding from a main body, and may further include multiple positioning protrusions protruding in respective directions from the main body. A data storage device employing such a feed-through comprises an enclosure base with which the feed-through is coupled, where the base comprises an annular recessed surface surrounding an aperture that is encompassed by the feed-through and is at a first level, and at least one recessed positioning surface at a higher level than the first level and extending in a direction away from the annular recessed surface. The positioning protrusion of the electrical feed-through physically mates with the recessed positioning surface of the base, such that the position of the feed-through is vertically constrained by the recessed positioning surface.
1. An electrical feed-through comprising:
a wall defining an outer boundary of the electrical feed-through;
a main body;
one or more layers of insulating material positioned in the main body;
a first positioning protrusion extending from the wall in a first direction and extending beyond the wall, the first positioning protrusion configured to be received in a first recess of an enclosure base;
a second positioning protrusion extending from the wall in a second direction different from the first direction, the second positioning protrusion configured to be received in a second recess of the enclosure base;
a plurality of first electrical terminals positioned on a first side of said main body;
a plurality of second electrical terminals positioned on a second side of said main body, the second side being opposite the first side; and
a plurality of vias electrically connecting at least some of said first electrical terminals with corresponding said second electrical terminals through said main body.
2. The electrical feed-through of claim 1 , wherein the second direction is opposite the first direction.
3. The electrical feed-through of claim 1 , wherein the second direction is normal to the first direction.
4. The electrical feed-through of claim 1 , further comprising a third positioning protrusion extending from the wall in a third direction different from the first and second directions, the third positioning protrusion configured to be received in a third recess of the enclosure base.
5. The electrical feed-through of claim 4 , wherein the first, second, and third positioning protrusions are further configured to physically mate with surfaces of the first, second, and third recesses of the enclosure base, respectively, such that position of the main body is vertically constrained by the surfaces of the first, second, and third recesses.
6. The electrical feed-through of claim 4 , wherein the second direction is normal to the first direction, and wherein the third direction is opposite the second direction.
7. The electrical feed-through of claim 1 , wherein the first and second positioning protrusions are further configured to physically mate with surfaces of the first and second recesses of the enclosure base, respectively, such that position of the main body is vertically constrained by the surfaces of the first and second recesses.
8. The electrical feed-through of claim 1 , wherein a shape of the electrical feed-through is asymmetrical with respect to a central axis of the electrical feed-through perpendicular to the first direction of the first positioning protrusion.
9. A data storage device comprising the electrical feed-through of claim 1 .
10. The electrical feed-through of claim 1 , wherein said plurality of first and said second electrical terminals comprise solder pads.
11. The electrical feed-through of claim 1 , further comprising:
a connector including compression-type terminals electrically coupled with said plurality of first electrical terminals.