Choosing a voltage transformer for PCB mounting looks simple at first, but in practice, small details make a big difference. From my experience, I always start with the basics: required voltage ratio, power rating, operating frequency, and available board space. It’s also important to check insulation, temperature rise, and mechanical dimensions before making a final choice. A transformer that fits perfectly on paper may not work well in a real circuit if these points are overlooked. Considering these factors, I chose PCB mount voltage transformer
https://yuanxing.net/en/products/miniature_voltage/ from Yuanxing