Application of SMAJ10A TVS Diode in Protection for On-Board Train Computing and Monitoring Systems
Application of SMAJ10A TVS Diode in Protection for On-Board Train Computing and Monitoring Systems In the context of rapid advancements in intelligent and electrified rail transit, the On-Board Train Computing and Monitoring System (OTCMS) functions as the "central nervous system" of trains, responsible for core tasks such as data acquisition, logical control, fault diagnosis, and communication management. However, this system operates in a challenging environment characterized by high voltage fluctuations, strong electromagnetic interference, and complex mechanical vibrations. Transient overvoltage is one of the primary threats to the system’s reliability. The SMAJ10A transient suppression diode, with its precise voltage parameters, ultra-low leakage current, and high power density, provides an efficient protective barrier in critical areas such as the on-board computing unit, sensor interfaces, and communication buses. This paper systematically discusses its protection mech...