DIGITIMES

Taipei – September 09, 2026 -- A new DIGITIMES Intelligence report finds that BYD's Xuanji A3 smart-driving system-on-chip has entered scaled production on a 4nm automotive-grade process, marking the culmination of a semiconductor strategy the company began building more than two decades ago.

BYD's chip roadmap moved from power devices to 4nm smart-driving silicon

BYD's semiconductor efforts started with IGBT and silicon carbide (SiC) power devices for electric-vehicle control systems, according to the report. That foundation has since expanded into higher-compute automotive SoCs, positioning the Xuanji A3 as a flagship product of a vertically integrated manufacturing model spanning chip design, wafer fabrication and mass production across multiple in-house fabs.