The DSEI12-12AZ-TUB is a Discrete Semiconductor Module PWR DISC-FRED, manufactured by IXYS. It is a power device designed to control the flow of electrical current in electronic circuits. It is used to regulate and protect power supplies, find applications in motor control, and even be the switching element in DC-DC converters. Its features include a maximum operating temperature of 125°C, a maximum voltage of 12V for the insulated version, and various high-power switching. This model also features an innovative four-element paralleled low profile plastic encapsulated package specifically designed to save board space.