The SMCJ75A with 121V 83.3V 75V SMC (DO-214AB), TVS ROHS is a part manufactured by SINO-IC, which is a Transient Voltage Suppressor (TVS) that is designed to protect sensitive electronic components from voltage spikes caused by lightning, electrostatic discharge (ESD), inductive loads, and other power transients. This device is made with a glass passivated junction and comes in the standard SOT-523 surface mount package. Its maximum peak pulse power is 1.5KW, and the operating temperature range is from -65°C to +175°C. This device complies with ROHS and is lead-free.