How to control EMC consistency in mass production of power FTUs?

EMC consistency control for FTU mass production requires standardized production and inspection.

Design standardization includes: fixed PCB layout, component selection, and grounding methods.

Material control: designated brands and models for key EMC components (such as the common-mode inductor CMZ3225A-501T and TVS diode SMBJ24CA), with incoming inspection.

Production process: controlled soldering temperature profiles; controlled shielding gasket installation pressure; controlled screw torque.

Inspection: simple EMC testing (such as radiation scanning) is performed on random sampling of each batch.

Through these controls, the EMC performance dispersion of mass-produced FTUs is less than 3dB, ensuring that each product meets certification requirements.