Die attach pickup tools

Claim 1

A die attach pickup tool for picking up a flexible ribbon shaped die attach having a thickness in a range of about 25 to 125 micrometers, an elastic modulus in the range of about 500 to 7,500 N/mm 2 at 23° C. and a first surface area from a first station, transferring the die attach to a heated bond site and depositing the die attach on the bond site, the tool comprising: a face for contacting the die attach, the face having a second surface area of at least about 1.27 mm square and a hole; and passage means connected to the hole for providing a vacuum through the hole, such that when each point of the first surface area is in contact with a point of the second surface area or adjacent the hole then, upon turning on the vacuum source, the tool is adapted to pickup and transfer the die attach and, upon turning the vacuum source off, the tool is adapted to deposit the die attach, the picking up, transferring and depositing all occurring while said die attach is in a substantially flat position.