The UDZSTE-178.2B is a Zener diode manufactured by ROHM. It has a breakdown voltage of 8.2V and a maximum thermal power dissipation of 5mA, making it suitable for use in a variety of voltage regulation, clipper, and stabilizer applications. This diode features excellent high temperature operating life and long-term stability, making it the perfect choice for any application exposed to prolonged high temperatures. It also has a low noise performance, making it well-suited for applications in audio amplifiers and digital logic circuits.