Aehr Test Systems designs, engineers, develops, manufactures, and sells test and burn-in equipment used in the semiconductor industry worldwide. Its systems are used to simultaneously perform parallel testing and burn-in of packaged integrated circuits (ICs), singulated bare dies, or ICs still in wafer form. The company offers full wafer contact test systems, test during burn-in systems, test fixtures, die carriers, and related accessories. It provides Advanced Burn-in and Test System family of packaged part burn-in and test systems, which perform test during burn-in of complex devices, such as digital signal processors, microprocessors, microcontrollers, and systems-on-a-chip, as well as offer individual temperature control for high-power advanced logic devices. The company also provides FOX systems, which are full wafer contact parallel test and burn-in systems designed to make contact with all pads of a wafer simultaneously; WaferPak cartridge that includes a full-wafer probe card for use in testing wafers in FOX systems; DiePak carrier, a reusable and temporary package that enables IC manufacturers to perform final test and burn-in of singulated bare die; and test fixtures that hold the devices undergoing test or burn-in and electrically connect the devices under test to the system electronics. In addition, the company offers customer service and support programs, including system installation, system repair, applications engineering support, spare parts inventories, customer training, and documentation. It markets and sells its products to semiconductor manufacturers, semiconductor contract assemblers, electronics manufacturers, and burn-in and test service companies through a network of distributors and sales representatives. Aehr Test Systems was founded in 1977 and is headquartered in Fremont, California.