MT 8704

Test handlers are automated machines used in the final test stage of semiconductor manufacturing. A test handler transfers packaged devices from input magazines or tubes to a test site where electrical contact is made. The handler then sorts devices into output bins based on the test results. Temperature control is often integrated to test devices over specified thermal ranges.

A test handler operates by singulating devices from an input tube or magazine and transporting them to a test position. At the test position, the device is contacted by a test socket or fixture connected to an external tester. After the test completes, the handler picks the device and places it into an appropriate output bin according to the test outcome. Many handlers include temperature modules for hot, cold, or ambient testing.

Test handlers are used after the wafer sort and assembly processes. In the semiconductor manufacturing flow, after devices are packaged (e.g., molded into SO packages), they are transferred to final test. The handler interfaces with a test system that performs electrical testing. After testing, devices proceed to marking, tape and reel, or shipment.