# US 9,439,278 B2 · Film capacitor having a package for heat transfer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,278 B2 - Document ID: US9439278B2 - Status: Granted - Kind: B2 - Application number: 14/568,682 - Filed: 2014-12-12 - Published: 2016-06-16 - Granted: 2016-09-06 - Earliest claimed: 2014-12-12 - Assignees: Deere & Company - Applicants: Deere & Company - Inventors: Brij N. Singh; Thomas Roan - Web page: https://patentgrep.com/patent/US9439278B2 ## CPC - H01G 4/236: leading through the housing, i.e. lead-through - H01G 2/065: {for surface mounting, e.g. chip capacitors} - H01G 2/106: {Fixing the capacitor in a housing} - H01G 4/232: electrically connecting two or more layers of a stacked or rolled capacitor - H01G 4/32: Wound capacitors - H01G 4/38: Multiple capacitors, i.e. structural combinations of fixed capacitors - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) ## Abstract A capacitor comprises a first winding member, where the first winding member comprises a first dielectric layer and a first conductive layer. A second winding member comprises a second dielectric layer and second conductive layer. The first winding member is interleaved, partially or entirely, with the second winding layer. A dielectric shell or shell is adapted to at least radially contain or border the first winding member and the second winding member. The first winding member is electrically connected to a first conductive end. A second winding member is electrically connected to a second conductive end. The second conductive end is opposite the first conductive end. The first conductive end forms a first lead; the second conductive end forms a second lead. ## Claims ### Claim 1 A capacitor comprising: a first winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a second winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a dielectric shell for radially surrounding the first winding member and the second winding member; and the first winding member electrically connected to a first conductive end; a second winding member electrically connected to a second conductive end, the second conductive end opposite the first conductive end, the first conductive end forming a first lead, the second conductive end forming a second lead, wherein the first conductive end has plurality of axially extending holes and wherein the second conductive end has a plurality of axial extending holes. ### Claim 2 (depends on 1) The capacitor according to claim 1 wherein the first conductive end has a peripheral mounting lip that extends inward toward the dielectric shell and wherein the second conductive end has a peripheral mounting lip that extends inward toward the dielectric shell. ### Claim 3 (depends on 1) The capacitor according to claim 1 wherein a plurality of first tabs extend at a substantially orthogonal angle from the first conductive end and wherein a plurality of second tabs extend at a substantially orthogonal angle from the second conductive end. ### Claim 4 (depends on 3) The capacitor according to claim 3 wherein the first tabs are interleaved with or adjacent to second tabs. ### Claim 5 (depends on 3) The capacitor according to claim 3 wherein each of the first tabs and the second tabs terminates in an arched portion, wherein the arch portion is biased against the dielectric shell. ### Claim 6 (depends on 5) The capacitor according to claim 5 wherein a greater radius of the arched portion faces inward toward the dielectric shell and a lesser radius of the arched portion faces outward. ### Claim 7 A capacitor comprising: a first winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a second winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a third winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a fourth winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a dielectric shell for radially surrounding the first winding member and the second winding member, a secondary dielectric shell for radially surrounding the third winding member, and the fourth winding member; and the first winding member and third winding member electrically connected to a first conductive end; a second winding member and fourth winding member electrically connected to a second conductive end, the second conductive end opposite the first conductive end, the first conductive end forming a first lead, the second conductive end forming a second lead. ### Claim 8 (depends on 7) The capacitor according to claim 7 wherein the first conductive end has a peripheral mounting lip that extends inward toward the dielectric shell and wherein the second conductive end has a peripheral mounting lip that extends inward toward the dielectric shell. ### Claim 9 (depends on 7) The capacitor according to claim 7 wherein the first conductive end has plurality of axially extending holes and wherein the second conductive end has a plurality of axial extending holes. ### Claim 10 (depends on 7) The capacitor according to claim 7 wherein a plurality of first tabs extend at a substantially orthogonal angle from the first conductive end and wherein a plurality of second tabs extend at a substantially orthogonal angle from the second conductive end. ### Claim 11 (depends on 10) The capacitor according to claim 10 wherein the first tabs are interleaved with or adjacent to second tabs. ### Claim 12 (depends on 10) The capacitor according to claim 10 wherein each of the first tabs and the second tabs terminates in an arched portion, wherein the arch is biased against the dielectric shell. ### Claim 13 (depends on 12) The capacitor according to claim 12 wherein a greater radius of the arched portion faces inward toward the dielectric shell and a lesser radius of the arched portion faces outward. ### Claim 14 An electronic assembly comprising: a circuit board having a dielectric layer, conductive traces, and mounting pads associated with one or more conductive traces, a first winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a second winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a dielectric shell for radially surrounding the first winding member and the second winding member; the first winding member electrically connected to a first conductive end; a second winding member electrically connected to a second conductive end, the second conductive end opposite the first conductive end, the first conductive end forming a first lead, the second conductive end forming a second lead; and a portion of the first conductive end electrically and mechanically connected to a mounting pad via solder, wherein a plurality of first tabs extend at a substantially orthogonal angle from the first conductive end and wherein a plurality of second tabs extend at a substantially orthogonal angle from the second conductive end. ### Claim 15 (depends on 14) The electronic assembly according to claim 14 further comprising a portion of the second conductive end electrically and mechanically connected to another mounting pad via solder. ### Claim 16 (depends on 14) The electronic assembly according to claim 14 further comprising a portion of the second conductive end electrically and mechanically connected to an end of another capacitor. ### Claim 17 (depends on 14) The electronic assembly according to claim 14 wherein the first conductive end has a peripheral mounting lip that extends inward toward the dielectric shell and wherein the second conductive end has a peripheral mounting lip that extends inward toward the dielectric shell. ### Claim 18 (depends on 14) The electronic assembly according to claim 14 wherein the first conductive end has plurality of axially extending holes and wherein the second conductive end has a plurality of axial extending holes. ### Claim 19 (depends on 14) The electronic assembly according to claim 14 wherein the first tabs are interleaved with or adjacent to second tabs. ### Claim 20 (depends on 19) The electronic assembly according to claim 19 wherein each of the first tabs and the second tabs terminates in an arched portion, wherein the arch is biased against the dielectric shell. ### Claim 21 (depends on 20) The electronic assembly according to claim 20 wherein a greater radius of the arched portion faces inward toward the dielectric shell and a lesser radius of the arched portion faces outward. ### Claim 22 (depends on 19) The electronic assembly according to claim 19 wherein each of the first tabs is electrically and mechanically connected to a first inner conductive pad on the circuit board, and wherein each of the second tabs is electrically and mechanically connected to a second inner conductive pad on the circuit board; the first inner conductive pad and the second inner conductive pad forming a thermal pathway for sinking heat into the circuit board. ### Claim 23 (depends on 14) The electronic assembly according to claim 14 where a respective thermal heat sink overlies the capacitor for heat sinking and is on an opposite side of the capacitor with respect to the circuit board. ### Claim 24 (depends on 23) The electronic assembly according to claim 23 wherein the thermal heat sink comprises a first portion that mates with a second portion to form an interior that is populated with thermal dissipation members that are generally spaced apart from each other.