Patent ID: 7495463

Claim:
A handler, comprising: a rotating unit that rotates a test tray between a horizontal position and a vertical position; a loading unit provided adjacent to a first side of the rotating unit, the loading unit comprising: a loading position that receives test trays for loading thereon of untested packaged chips from a loading stacker; and a departing position provided below the loading position, wherein the departing position receives test trays containing untested packaged chips from the loading position for transfer to the rotating unit; an unloading unit provided adjacent to a second side of the rotating unit opposite the first side, the unloading unit comprising: an arriving position that receives test trays loaded with tested package chips from the rotating unit; and an unloading position provided above the arriving position, wherein the unloading position receives test trays loaded with tested packaged chips from the arriving position for unloading to an unloading stacker; a chamber system that receives test trays of untested packaged chips from the rotating unit, tests the packaged chips, and returns test trays of tested packaged chips to the rotating unit; and a picker system that transfers packaged chips from the loading stacker to the loading unit, and from the unloading unit to the unloading stacker.