STMicroelectronics TO-220FP wide creepage power transistors

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STMicroelectronics has introduced a portfolio of TO-220 FullPAK (TO-220FP) wide creepage power transistors, including what is claimed to be the world’s first 1500 V super-junction MOSFET. The package is suitable for the power transistors of open-frame power supplies commonly used in equipment such as television sets and PCs, which are vulnerable to surface contamination by dust and particles that can cause high-voltage arcing between transistor terminals.

The package’s extended lead spacing of 4.25 mm eliminates the special potting, lead forming, sleeving or sealing needed to prevent the arcing when using conventional packages with 2.54 mm lead spacing. Power-supply manufacturers can now meet applicable safety standards and minimise field failures without applying these additional processes, thereby simplifying manufacturing and enhancing productivity.

The wide creepage version provides good arcing resistance while retaining the electrical properties of the standard TO-220FP. Moreover, similar outer dimensions help streamline design-in and ensure compatibility with established assembly processes.

For more information: http://www.st.com/mosfet.