This part is a Fastron silicon-controlled rectifier (SCR) module manufactured by Electronicon. It is rated at 1500V, 151A, and 1.7 Ohms, with a forward blocking voltage of 1210V. It features glass passivated junctions for the thyristors, and its surface-mount package offers space savings and improved thermal management. The SCR module is suitable for motor control applications such as variable speed drives, choppers, and welding machines.