Patent ID: 7554349

Claim:
A semiconductor device test handler for maintaining a stable temperature or temperatures in a test environment, the handler comprising: a loading unit that loads a plurality of semiconductor devices mounted on a test tray or trays; a soak chamber configured to receive the test tray or trays from the loading unit and to age the semiconductor devices at an aging temperature or temperatures; and a test chamber configured to receive and test the aged semiconductor devices, the test chamber comprising: a test board; a first chamber disposed near the test board; a second chamber disposed near the first chamber; one or more pipelines directly or indirectly connected to the first and second chambers that allow a temperature-control medium to flow between the first and second chambers; a de-soak chamber that further ages the tested semiconductor devices so that the tested semiconductor devices substantially return to ambient temperature; and a sorting and unloading unit that sorts the tested semiconductor devices according to results of the test and that unloads the sorted semiconductor devices; wherein the temperature-control medium comprises liquid coolant.