GB/T 4937.23-2023 is part of the series of standards for the reliability testing of semiconductor devices, specifically focusing on the High-Temperature Operating Life (HTOL) test. This test aims to accelerate potential failures in devices by subjecting them to high-temperature environments (typically above the device's maximum rated junction temperature) and applying rated electrical stress, thereby evaluating their reliability and lifespan under long-term operating conditions. The standard specifies the test conditions, procedures, failure criteria, as well as requirements for data recording and analysis. The test is typically conducted in an environmental chamber that provides a stable high-temperature environment, in conjunction with specialized semiconductor test systems and burn-in boards capable of delivering precise electrical stress and monitoring changes in device parameters.