A feedthrough assembly comprising: a ferrule defining a ferrule opening; a feedthrough at least partially disposed within the ferrule opening and having a feedthrough substrate defining an externally-facing feedthrough side, an internally-facing feedthrough side and a perimeter wall attached to an interior wall of the ferrule to form a hermetic seal between the feedthrough and the ferrule, the feedthrough defining at least one feedthrough conductive pathway extending between the internally-facing feedthrough side and the externally-facing feedthrough side, each of the at least one feedthrough conductive pathway consists of a feedthrough conductive via electrically and physically coupled to an externally-facing feedthrough conductive pad and an internally-facing feedthrough conductive pad; a capacitive filter array at least partially disposed within the ferrule opening and having a capacitive filter substrate that defines an internally-facing filter array side, an externally-facing filter array side and a perimeter wall having a perimeter conductive contact disposed therealong, the capacitive filter defining at least one filter array conductive pathway extending between the internally-facing filter array side and the externally-facing capacitor filter array side, and a first thick film conductive paste (48a-c) comprising a silver and palladium mixture or alloy between the at least one feedthrough conductive pathway and the at least one filter array conductive pathway and electrically connecting the internally-facing side of the at least one feedthrough conductive pathway and the externally facing side of the at least one filter array conductive pathway, as well as a second thick film conductive paste (48d-e) comprising a silver and palladium mixture or alloy mechanically and electrically connecting the perimeter conductive contact and the ferrule; characterised in that the first thick film conductive paste (48a-c) forms the only mechanical connections between the feedthrough and the capacitive filter array and/or the second thick film conductive paste (48d-e) forms the only mechanical connections between the capacitive filter array and the ferrule. a ferrule defining a ferrule opening; a feedthrough at least partially disposed within the ferrule opening and having a feedthrough substrate defining an externally-facing feedthrough side, an internally-facing feedthrough side and a perimeter wall attached to an interior wall of the ferrule to form a hermetic seal between the feedthrough and the ferrule, the feedthrough defining at least one feedthrough conductive pathway extending between the internally-facing feedthrough side and the externally-facing feedthrough side, each of the at least one feedthrough conductive pathway consists of a feedthrough conductive via electrically and physically coupled to an externally-facing feedthrough conductive pad and an internally-facing feedthrough conductive pad; a capacitive filter array at least partially disposed within the ferrule opening and having a capacitive filter substrate that defines an internally-facing filter array side, an externally-facing filter array side and a perimeter wall having a perimeter conductive contact disposed therealong, the capacitive filter defining at least one filter array conductive pathway extending between the internally-facing filter array side and the externally-facing capacitor filter array side, and a first thick film conductive paste (48a-c) comprising a silver and palladium mixture or alloy between the at least one feedthrough conductive pathway and the at least one filter array conductive pathway and electrically connecting the internally-facing side of the at least one feedthrough conductive pathway and the externally facing side of the at least one filter array conductive pathway, as well as a second thick film conductive paste (48d-e) comprising a silver and palladium mixture or alloy mechanically and electrically connecting the perimeter conductive contact and the ferrule; characterised in that the first thick film conductive paste (48a-c) forms the only mechanical connections between the feedthrough and the capacitive filter array and/or the second thick film conductive paste (48d-e) forms the only mechanical connections between the capacitive filter array and the ferrule.