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SiliconLabs_QFN-20-1EP_3x3mm_P0.5mm_EP1.8x1.8mm_ThermalVias

Free PCB footprint for SiliconLabs_QFN-20-1EP_3x3mm_P0.5mm_EP1.8x1.8mm_ThermalVias, 20-Lead Plastic Quad Flat, No Lead Package - 3x3 mm Body [QFN] with corner pads and thermal vias; see figure 8.2 of https://www.silabs.com/documents/public/data-sheets/efm8bb1-datasheet.pdf. Preview it below, download the KiCad files, or open it straight in ProtoFlow.