A method of fabricating an implantable pulse generator for generating electrical pulses for application to tissue of a patient, the method comprises: 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.
