Wire Length Formulation Using Wire Density, Volume and Weight for Hand Calculation and Verification of Wire Usage

Abstract

Wire Bonding process uses precious materials such as gold, silver, and copper wires to create a connection from the die to the strip and completing the circuitry of a semiconductor unit. Wire consumption is identified by length that is consumed per unit and higher consumption leads to inflated cost of the product. Upon unit processing, the standard wire consumption per unit is 0.036 meters equivalent to 27800 units per 1000 meters spool but only produced 26900 units. The study focuses on validation of the possible cause of lacking 800 units equivalent to 32 meters of wire length. Using the gold wire density, volume, and weight of the wire, wire length is formulated that can be used for hand calculation and verification of actual wire length. Methodology used for validation resulted that the actual unit consumption for wire length is at 0.037 meters which lacks 0.001 meter per unit, and this is equivalent to approximately 800 units per 1000-meter spool. In parallel, supply is compliant with the 1000 meters of wire per spool. Through the results collected, it was concluded that the standard is not sufficient to be the reference for the actual wire consumption resulting to the impression of high wire consumption. It was recommended for the alignment of the standards with the actual validation using the methodology stated on the study and hand calculation using wire length formula.