Company: AEHR
Filing Date: 2025-07-28
Form Type: 10-K
Source: 0001654954-25-008553
Chunk: 1

Company: AEHR TEST SYSTEMS
Filing Date: 2025-07-28
Form: 10-K
Item: Item 1
Chunk 1
---
ehr the unique ability to deliver wafer level test and burn-in and package part burn-in for AI accelerators, GPUs, and high-performance computing (“HPC”) processors. The combination positions us well within the rapidly growing AI market as a turn-key provider of reliability and testing that span from engineering to high volume production. In combination with Incal’s Sonoma, Tahoe and Echo package part burn-in systems, we provide a full range of solutions for semiconductor devices.

INDUSTRY BACKGROUND

Semiconductor manufacturing is a complex, multi-step process, and defects or weaknesses that may result in the failure of a semiconductor device may be introduced at any process step. Failures may occur immediately or at any time during the operating life of the device, sometimes after several months of normal use. Semiconductor manufacturers rely on testing and reliability screening to identify and eliminate defects that occur during the manufacturing process.

Testing and reliability screenings involve multiple steps. The first set of tests is typically performed by semiconductor device manufacturers before the processed semiconductor wafer is cut into individual die, in order to avoid the cost of packaging defective die. This “wafer probe” testing can be performed on one or many die at a time, including testing the entire wafer at once. Most leading-edge microprocessors, microcontrollers, digital signal processors, memory ICs, sensors, power and optical devices (such as vertical-cavity surface-emitting lasers, or VCSELs) then undergo an extensive reliability screening and stress testing procedure known as burn-in or cycling, depending on the application. This can either be done at the wafer level, before the die are packaged, or at the package level, after the die are packaged. The burn-in process screens for early failures by operating the device at elevated voltages and temperatures, at up to 150 degrees Celsius (302 degrees Fahrenheit) or higher. Depending upon the application, the burn-in times can range anywhere from minutes to hours or even days. A typical burn-in system can process thousands of devices simultaneously. After burn-in, the devices undergo a final test process using automatic test equipment, or testers. For example, this cycling process screens silicon carbide semiconductor devices used in electric vehicle engine controller inverters and their corresponding on-board battery chargers for failure to meet current power loss and leakage specifications, as well as endurance requirements.

MARKETS

The Company’s semiconductor test and reliability qualification solutions address multiple test and burn-in markets including Artificial Intelligence devices for Large Language Modules (“LLMs”) and Inference, Silicon Carbide (“SiC”)