Patent ID: 7880461

Claim:
A handler, comprising: a loading unit that loads packaged chips to be tested into test trays; an unloading unit that unloads tested packaged chips from test trays; a rotating unit that rotates test trays between horizontal and vertical positions; a first chamber that receives test trays, containing packaged chips to be tested, from the rotating unit, and that heats or cools the received package chips to a testing temperature; a second chamber that receives test trays, containing packaged chips at the testing temperature, from the first chamber, and that brings the received packaged chips into contact with sockets of a test board for testing; a third chamber that receives test trays, containing tested packaged chips, from the second chamber, and that heats or cools the received packaged chips to room temperature; and an apparatus for transferring a test tray, containing packaged chips to be tested, from the rotating unit into the first chamber and at the same time transferring a test tray, containing tested packaged chips, from the third chamber to the rotating unit.