The 1SMA4753A is a Zener diode with SMA (DO-214AC) RoHS package manufactured by LGE. It is a small signal diode designed to provide a relatively constant voltage drop across a wide range of current. It is suitable for applications where a low voltage, low-leakage, small-signal diode is needed, such as reverse polarity protection, voltage limiting, or temperature compensation. The 1SMA4753A has a maximum power dissipation of 500mW at a maximum junction temperature of +175°C and performs best in environments between -55°C and +125°C. This diode features low reverse current leakage, fast switching speeds, and low forward voltage drop, making it an ideal choice for a variety of applications.