aluminum ribbon is manufactured in many different thicknesses and sizes. It is used in the manufacture of power device components and is one of the most commonly used materials in the world.
The use of ribbons in the manufacturing of power devices is increasing rapidly for a variety of reasons. These include improved electrical characteristics, better heat dissipation, fewer bonds, and increased throughput.
Traditionally, wire bonding was used in many high power applications. However, due to the inherent limitations of the wire bonding process, heavy wire bonds have been replaced by ribbon bonds.
Because of this, a number of challenges have been encountered in the development of ribbon bonding. These challenges included equipment functions, the development of consumables, and more robust bonding profiles to minimize die damage.
In order to overcome these challenges, Coining developed SPM POWER BOND RIBBON(tm). This is an advanced corrosion resistant aluminum ribbon that was designed to meet the demanding requirements of the high power industry.
The ribbon is bonded to a diamond shaped surface during the bonding process. This surface grips the ribbon initially and helps hold it in position during the bonding cycle. As the thermal bonding friction is applied to fuse the ribbon to the bonding pad, the diamond shaped surface keeps the ribbon from shifting. This eliminates snagging in the bonding wedge and reduces downtime.
