ENVIRONMENTAL TEST APPARATUS

PURPOSE:To load or unload a semiconductor device smoothly to or from a revolving drum, and to prevent the generation of trouble by mounting a guide rail for supporting the semiconductor device fitted to the revolving drum in a thermostatic chamber on the same plane as a carrying path for the semiconductor device. CONSTITUTION:A semiconductor device 5 is supported to the circumferential surface of a revolving drum 9 in a thermostatic chamber 7 through a distributing member 6 from a loader section 1, and positioned under required environmental conditions by the revolution of the drum 9, characteristics are tested in a testing section 8, and the semiconductor device is housed in a magazine 10 for an unloader section 3. The semiconductor device 5 can be loaded or unloaded onto or from a lower rail 14 when an upper rail 15 in a guide rail 13 is moved upward, and the semiconductor device 5 is held between the lower rail 14 and the upper rail 15 when the upper rail 15 is moved downward. The semiconductor device 5 brought to a fixed temperature is unloaded onto turnabout levers 20 from the revolving drum 9. The semiconductor device can be loaded or unloaded smoothly because the distributing member 6, the turnabout levers 20 and the lower rail 14 are positioned on the same plane.