WNS20, WNS30, & WNS40 Power Schottky Diodes WeEn Semiconductors WNS20, WNS30, and WNS40 Power Schottky Diodes are ideal for use as rectifiers in high-frequency switched-mode power supplies. These devices feature a trench structure, high efficiency, and a high junction temperature up to 150°C. The WNS20, WNS30, and WNS40 Power Schottky Diodes offer optimized VF, low leakage current, and high long-term reliability.