A method of fabricating an implantable pulse generator for generating electrical pulses for application to tissue of a patient, the method comprising: providing one or more housing components adapted to house at least pulse generating and switching circuitry of the implantable pulse generator; providing a feedthrough assembly adapted to be coupled with the one or more housing components, the feedthrough assembly comprising an array of feedthrough pins for providing respective electrical connections from a hermetically sealed enclosure formed within the one or more housing components to a location exterior to the enclosure; providing a plurality of welding components with each welding component comprising a first portion adapted to engage a respective feedthrough pin and a second portion for engaging a conductor wire; performing one or more weld operations for each welding component to connect each welding component with a respective feedthrough pin and a respective conductor wire by applying a majority of welding energy directly to the welding components; wherein, within the enclosure, each feedthrough pin is electrically coupled to the pulse generating circuitry through the switching circuitry of the implantable pulse generator; characterised in that wherein (i) each of the plurality of welding components is ferrule tube connector, (ii) each of the feedthrough pins are welded to a respective ferrule tube connector that circumscribes the corresponding feedthrough pin and (iii) each of the plurality of conductor wires is disposed within a slot of a corresponding ferrule tube connector with the respective conductor wire being welded to its corresponding ferrule tube connector. providing one or more housing components adapted to house at least pulse generating and switching circuitry of the implantable pulse generator; providing a feedthrough assembly adapted to be coupled with the one or more housing components, the feedthrough assembly comprising an array of feedthrough pins for providing respective electrical connections from a hermetically sealed enclosure formed within the one or more housing components to a location exterior to the enclosure; providing a plurality of welding components with each welding component comprising a first portion adapted to engage a respective feedthrough pin and a second portion for engaging a conductor wire; performing one or more weld operations for each welding component to connect each welding component with a respective feedthrough pin and a respective conductor wire by applying a majority of welding energy directly to the welding components; wherein, within the enclosure, each feedthrough pin is electrically coupled to the pulse generating circuitry through the switching circuitry of the implantable pulse generator; wherein (i) each of the plurality of welding components is ferrule tube connector, (ii) each of the feedthrough pins are welded to a respective ferrule tube connector that circumscribes the corresponding feedthrough pin and (iii) each of the plurality of conductor wires is disposed within a slot of a corresponding ferrule tube connector with the respective conductor wire being welded to its corresponding ferrule tube connector.