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An electrical connector includes a housing and a lead frame held by the housing. The lead frame includes a terminal extending along a length between a mating end portion and a mounting end portion. The terminal is at least partially surrounded by a dielectric core extending a length along at least a

An electrical connector includes a housing and a lead frame held by the housing. The lead frame includes a terminal extending along a length between a mating end portion and a mounting end portion. The terminal is at least partially surrounded by a dielectric core extending a length along at least a portion of the length of the terminal. The dielectric core is metallized such that the core is at least partially surrounded by an electrically conductive shell.

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What is claimed is: 1. An electrical connector comprising: a housing; and a lead frame held by the housing, the lead frame comprising a plurality of terminals each extending along a length between a mating end portion and a mounting end portion, the plurality of terminals being arranged in differen

What is claimed is: 1. An electrical connector comprising: a housing; and a lead frame held by the housing, the lead frame comprising a plurality of terminals each extending along a length between a mating end portion and a mounting end portion, the plurality of terminals being arranged in differential pairs, each differential pair of terminals being at least partially surrounded by a separate dielectric core extending a length along at least a portion of the length of the corresponding differential pair of terminals, wherein at least one of the dielectric cores is metallized such that the at least one dielectric core is at least partially surrounded by an electrically conductive shell, and wherein at least one of the terminals comprises an approximately planar side. 2. The electrical connector according to claim 1, wherein the at least one dielectric core is directly metallized to form the electrically conductive shell. 3. The electrical connector according to claim 1, wherein the at least one dielectric core comprises a plurality of exterior sides, the electrically conductive shell surrounding at least two of the exterior sides of the at least one dielectric core along at least a portion of the length of the at least one dielectric core. 4. The electrical connector according to claim 1, wherein the at least one dielectric core comprises an exterior surface having a circumference, the electrically conductive shell surrounding at least an approximate half of the circumference of the exterior surface of the at least one dielectric core along at least a portion of the length of the at least one dielectric core. 5. The electrical connector according to claim 1, wherein the at least one dielectric core comprises an exterior surface having a circumference, the electrically conductive shell surrounding an approximate entirety of the circumference of the exterior surface of the at least one dielectric core along at least a portion of the length of the at least one dielectric core. 6. The electrical connector according to claim 1, wherein the at least one dielectric core comprises an exterior surface having a circumference, the electrically conductive shell surrounding an approximate entirety of the circumference of the exterior surface of the at least one dielectric core along an approximate entirety of the length of the at least one dielectric core. 7. The electrical connector according to claim 1, wherein the electrically conductive shell comprises a thickness of between approximately 10 microns and approximately 500 microns. 8. The electrical connector according to claim 1, wherein each of the terminals comprises an approximately rectangular cross-sectional shape. 9. The electrical connector according to claim 1, wherein for each differential pair of terminals, the pair of terminals is arranged in a row relative to each other, and wherein the rows of differential pairs are arranged in a column. 10. The electrical connector according to claim 1, wherein a plurality of the lead frames are held by the housing, the housing comprising a plurality of contact modules, each contact module comprising a corresponding one of the lead frames. 11. A contact module for an electrical connector, said contact module comprising a lead frame comprising a plurality of terminals each extending along a length between a mating end portion and a mounting end portion, the plurality of terminals being arranged in differential pairs, each differential pair of terminals being at least partially surrounded by a separate dielectric core extending a length along at least a portion of the length of the corresponding differential pair of terminals, wherein each of the dielectric cores is at least partially surrounded by a separate electrically conductive shell, and wherein at least one of the terminals comprises an approximately planar side. 12. The contact module according to claim 11, wherein each dielectric core is directly metallized to form the corresponding electrically conductive shell. 13. The contact module according to claim 11, wherein each dielectric core comprises a plurality of exterior sides, each electrically conductive shell surrounding at least two of the exterior sides of the corresponding dielectric core along at least a portion of the length of the corresponding dielectric core. 14. The contact module according to claim 11, wherein each dielectric core comprises an exterior surface having a circumference, each electrically conductive shell surrounding at least an approximate half of the circumference of the exterior surface of the corresponding dielectric core along at least a portion of the length of the corresponding dielectric core. 15. The contact module according to claim 11, wherein each dielectric core comprises an exterior surface having a circumference, each electrically conductive shell surrounding an approximate entirety of the circumference of the exterior surface of the corresponding dielectric core along at least a portion of the length of the corresponding dielectric core. 16. The contact module according to claim 11, wherein each dielectric core comprises an exterior surface having a circumference, each electrically conductive shell surrounding an approximate entirety of the circumference of the exterior surface of the corresponding dielectric core along an approximate entirety of the length of the corresponding dielectric core. 17. The contact module according to claim 11, wherein each electrically conductive shell comprises a thickness of between approximately 10 microns and approximately 500 microns. 18. The contact module according to claim 11, wherein each of the terminals comprises an approximately rectangular cross-sectional shape. 19. The contact module according to claim 11, wherein for each differential pair of terminals, the differential pair of terminals is arranged in a row relative to each other, and wherein the rows of differential pairs are arranged in a column. 20. The contact module according to claim 11, further comprising a mounting contact extending from the mounting end portion of each of the terminals and a mating contact extending from the mating end portion of each of the terminals.