Xiamen Anapex Electronics Co., Ltd. (brand: APSA) was founded in 2006 and is headquartered in Xiamen, China. The company specializes in the design, manufacturing, and sales of discrete semiconductors and circuit protection components. Its core product lines include TVS transient voltage suppressors, ESD electrostatic protection arrays, Zener diodes, Schottky barrier rectifiers, fast recovery diodes, switching diodes, and small-signal MOSFETs. Under the APSA brand, the TVS series (e.g., SMAJ, SMBJ, P4KE, P6KE families) and multi-channel ESD arrays (such as SR05, ESD5Z, ESDALC series) are widely used in consumer electronics, industrial control, automotive electronics, and communication equipment. The company has built a strong reputation in the domestic Chinese market and is increasingly recognized in international markets for cost-effective, high-reliability protection solutions. Anapex operates ISO-certified wafer fabs and packaging facilities, enabling volume production with short lead times. While not a top-tier global player, APSA has become one of the leading domestic brands in China’s circuit protection segment, competing with international brands like Littelfuse, STMicroelectronics, and ON Semiconductor in the TVS/ESD markets. Its products are frequently used in design-ins for smartphones, power adapters, USB ports, and IoT devices.