Patent ID: 6384593
Filing Date: 2002-05-07
Classification: G01R

Abstract:
A semiconductor device testing apparatus including a loader section, a constant temperature chamber located adjacent said loader section, a test chamber located adjacent said constant temperature chamber, said test chamber containing a tester head disposed therein, a temperature-stress removing chamber located adjacent said test chamber, and an unloader section, in which the arrangement is such that a plurality of semiconductor devices are transferred and loaded from a general-purpose tray onto a test tray transported into and held still in said loader section, said test tray loaded with said semiconductor devices is transported into said constant temperature chamber where a temperature stress of a desired temperature is imposed on said semiconductor devices, followed by said test tray being moved into said test chamber where the semiconductor devices carried on said test tray are brought into electrical contact with said tester head to test them for their electrical characteristics with the test results being stored for each of said semiconductor devices, upon completion of the testing said test tray is moved into said temperature-stress removing chamber where the tested semiconductor devices are relieved of the temperature stress of either a high or low temperature imposed in said constant temperature chamber, and said test tray loaded with said temperature stress-relieved tested semiconductor devices is delivered out to said unloader section where the tested semiconductor devices on said test tray are sorted out into pass articles and failure articles on the basis of said stored test results, followed by said pass and failure articles being transferred onto corresponding general-purpose trays,said semiconductor device testing apparatus being characterized in: that said constant temperature chamber and said test chamber are arranged transversely in a line; that said loader section is located in front of said constant temperature chamber; that said temperature-stress removing chamber is located in front of said test chamber; and that said unloader section is located over said temperature-stress removing chamber.