Test electrical characteristics of circuits on semiconductor wafers.
What does a Semiconductor Wafers Tester do?
Tests electrical characteristics of circuits on semiconductor wafers, using test equipment: Reads processing documents to determine test specifications. Obtains specified probe cards from inventory and slides probe cards into designated slot on testing equipment. Activates testing equipment and places wafer on chuck of test equipment, using tweezers. Observes wafer through test equipment microscope and aligns wafer under probes of test equipment. Pushes buttons to activate test cycle. Records test readings from printouts or display screen in test log. Compares test readings with specifications manual to identify wafers failing electrical tests. Maintains production records. May clean and maintain test equipment.