Die attachment

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Die attachment process (Photo by Creative Materials Inc.)
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Die attachment process (Photo by Creative Materials Inc.)

Die attachment is the step during the integrated circuit packaging phase of semiconductor device fabrication during which a die is mounted and fixed to the package or support structure.

For high-powered applications, the die is usually eutectic bonded onto the package (for good heat conduction). For low-cost, low-powered applications, the die is often glued directly onto a substrate (such as a printed wiring board) using an epoxy adhesive.