The 1SMA5919BT3G is a discrete semiconductor component manufactured by ON Semiconductor. It is a Zener diode with a voltage range of 3.3V, ideal for voltage regulation and transient voltage suppression applications. This component has a maximum power dissipation of 1.5W and a forward voltage of 1.5V. The 1SMA5919BT3G comes in a SMA package with a forward current of 1A, making it suitable for use in various electronic circuits and systems. Its compact size and high reliability make it a popular choice for protection against voltage spikes and surges in devices such as power supplies, inverters, and automotive applications. The component also features a low reverse leakage current, ensuring efficient and reliable performance in demanding conditions