Company: AEHR
Filing Date: 2025-07-28
Form Type: 10-K
Source: 0001654954-25-008553
Chunk: 8

Company: AEHR TEST SYSTEMS
Filing Date: 2025-07-28
Form: 10-K
Item: Item 1
Chunk 8
---
 the customer’s modules to the DiePak Carrier so that the modules can be tested and burned-in by the FOX-XP and FOX-NP system. Typically, one DiePak Loader can support several FOX-XP or FOX-NP systems.

Net revenues of full wafer contact product lines, systems, WaferPak Contactors, DiePak Carriers and services for fiscal 2025, 2024, and 2023 were $39.2 million, $64.6 million, and $63.5 million, respectively, and accounted for approximately 66%, 98%, and 98% of the Company’s net revenues in fiscal 2025, 2024, and 2023, respectively.

Systems For Packaged Parts

Test during burn-in, or TDBI, systems consist of several subsystems: pattern generation and test electronics, control software, network interface and environmental chamber. The test pattern generator allows duplication of most of the functional tests performed by a traditional tester. Pin electronics at each burn-in board (“BIB”) or Burn-in module (“BIM”) position are designed to provide accurate signals to the ICs being tested and detect whether a device is failing the test.

 7Table of Contents

Devices being tested are placed on BIBs and loaded into environmental chambers which typically operate at temperatures from 25 degrees Celsius (77 degrees Fahrenheit) up to 150 degrees Celsius (302 degrees Fahrenheit). Using our optional chambers, our systems can produce temperatures as low as -55 degrees Celsius (-67 degrees Fahrenheit). A single BIB can hold up to several hundred ICs, and a production chamber holds up to 72 BIBs, resulting in thousands of memory or logic devices being tested in a single system. 

For high-power applications, devices under test are placed on BIMs which are loaded into our power burn-in systems. Pin electronics and power supplies are dedicated to each individual device under test (DUT) and all resources are near the DUT to optimize signal integrity and accuracy. The temperature is controlled locally at DUT level and thermal control is liquid cooled. 

In connection with the acquisition of Incal, our product portfolio further expanded to include packaged parts burn-in solutions for the full range of power and complexity of integrated circuits. Incal’s product lines feature the Sonoma series for ultra-high-power burn-in testing, the Tahoe series for medium-power reliability burn-in, and the Echo series for low-power and high parallelism testing. The Sonoma line, with its