should preferably use at least a top layer if a multi layer structure of gold or aluminum but numerous other metallizations can be successfully used requiring different levels of ultrasonic vibration force and temperature a modern automated wirebonder is capable of bonding over 10 loop shaped stems per second in the embodiment of the present invention represented in fig1 a and 1b a wire skeleton 30 is formed upon severing the single wire stem 60 as shown in fig2 the skeleton 30 geometrically defines the protuberant contact produced by the method of the present invention referring now to fig2 physical finishing and determining mechanical and chemical properties of the resulting protuberant contact 50 are provided through overcoating of the skeleton 30 and the contact carrying terminal 90 with a continuous coating 40 which consists of at least one electrically conducting layer the continuous coating 40 anchors the skeleton to the terminal by bridging in the areas of contact between the ball bond 22 and wedge bond 23 and the terminal the overcoating material may be significantly stronger than the skeleton material it can be applied by wet electrochemical means e g through electrolytic or electroless aqueous solution plating of metals on the skeleton and the terminal the wet plating techniques are for instance described in metal finishing guidebook annually published by metals and plastics publications inc one preferred embodiment comprises electroplating of.