Patent ID: 7196508

Claim:
A handler for testing semiconductor devices comprising: a loading station in which semiconductor devices to be tested are stored; an unloading station in which tested semiconductor devices are stored after being sorted in accordance with test results of the tested semiconductor devices; test trays each provided with a plurality of carriers for temporarily holding the semiconductor devices; an exchanging station comprising a horizontal moving unit for horizontally moving the test tray by a predetermined pitch at a working place defined in the exchanging station, the exchanging station performing a process for loading the semiconductor devices in the carriers of the test tray and unloading the semiconductor devices from the carriers of the test tray while moving the test tray by the predetermined pitch; a test station in which at least one test board having a plurality of test sockets to be electrically connected with semiconductor devices is mounted, the test station performing a test while connecting the semiconductor devices in the test trays, which are fed from the exchanging station to the test station, to the test sockets; device transfer units for transfer the semiconductor devices between the loading station and the exchanging station to load the semiconductor devices in the carriers of the test trays, and transfer the semiconductor devices between the exchanging station and the unloading station to unload the semiconductor devices from the carriers of the test trays, respectively; and a tray transfer unit for transfer the test trays between the exchanging station and the test station.