4 layers80 × 50 mm

Demo board
tombueng/emcvisual
EMC/EMI near-field simulator for KiCad PCBs in the browser: 3D field view, virtual near-field probe, spectrum, CISPR 32 estimate, return-path hints. EMV-Simulation für Leiterplatten.
16 parts30BSD
KiCad boards from 2 GitHub repositories tagged “emc”, the most starred first; open any of them in PCBKit.

tombueng/emcvisual
EMC/EMI near-field simulator for KiCad PCBs in the browser: 3D field view, virtual near-field probe, spectrum, CISPR 32 estimate, return-path hints. EMV-Simulation für Leiterplatten.

CGainsWorks/emb-multirail-smps
Compact multi-output switch-mode power supply in Altium: synchronous buck, boost and LDO stages on a 4-layer board, with loop compensation, thermal analysis and EMC pre-compliance.