STH12N120K5-2: High-Performance N-Channel MOSFET by STMicroelectronics | Features & Applications 2025-04-22 Discover the STH12N120K5-2 N-Channel MOSFET by STMicroelectronics a high-performance, 1200V, 12A power transistor for SMPS, motor control, and solar inverters. Learn specs, benefits, and where to buy.