T 6575 A

The Advantest T 6575 A is a semiconductor tester.^[1]

Semiconductor testers operate by executing a test program that defines a sequence of electrical stimuli applied to the device under test (DUT). The tester's pin electronics provide each DUT pin with voltage or current levels, timing edges, and compare thresholds. Internal measurement units capture and digitize the DUT's output signals, comparing them against expected values stored in the test program.

Testers are typically organized into a test head that physically interfaces with the DUT through a probe card or test socket, and a mainframe that contains the sequencing, timing, and measurement electronics. The system includes a computer controller that manages the test flow and data logging.

Semiconductor testers are used in the final stages of integrated circuit manufacturing. After wafers are fabricated and diced, individual die are packaged and then subjected to final test (FT) where the tester screens for functional and parametric defects. In some flows, a wafer-level test (probe) precedes dicing, using a prober to contact the die before packaging.

The tester outputs pass/fail data that guides binning, yield analysis, and quality assurance. Downstream steps include tape and reel, marking, and shipment to customers.