Patent ID: 7264481

Claim:
An electrical contact arrangement, comprising a first electrically conductive contact pad, a second electrically conductive contact pad, and an electrically conductive connection between the first and second contact pads, the two contact pads being arranged opposite each other and the connection being an electrical pressure contact spring clamped of electrically conductive wire between the two contact pads, the electrical pressure contact spring comprising a first contacting region for contacting the first electrically conductive contact pad, a rounded contact tip being arranged in the first contacting region for contacting the first contact pad, the contact tip having an outer radius (R) which corresponds to one to three times the thickness of the wire (a), a second contacting region for contacting the second electrically conductive contact pad, and a compressing region, with at least one wire curvature, arranged between the first contacting region and the second contacting region, a straight piece of wire extending from the compressing region and finishing in the contact tip running in the direction of the spring force (F), wherein the wire is bent in the first contacting region, and wherein this wire bend forms the contact tip, wherein at least the first contact pad includes a barrier layer arranged underneath a surface layer such that the contact tip of the pressure contact spring is prevented from penetrating through the barrier layer when it penetrates into said surface layer.