The BZT52C2V4 with Zener Diodes SOD-123 RoHS by Hottech is a diode package that is designed for voltage regulation and surge protection. It is a three-terminal device composed of two silicon diodes connected in series with their cathodes bonded together; the anode of one diode is connected to the cathode of the other, creating a junction between them. When reverse bias is applied, the junction will break down at a predetermined voltage, allowing current to flow in the reverse direction. This model features a Power Dissipation rating of 250mW, a Breakdown Voltage of 2.4V, and a Clamping Voltage of 2.75V. In addition, it is RoHS compliant, making it a viable option for many applications.