First demonstration of heterogeneous integrated limiter chip with breakdown-enhanced GaN SBDs. - Jincheng Zhang 001; Shudong Huo; Zhengxing Zhang; Mengjiao Xiang; Menghan Zheng; Shen Liu; Yachao Zhang 002; Xiufeng Song; Hong Zhou; Kui Dang; Jing Ning; Yue Hao 001 (Sci. China Inf. Sci., 2026)