The BZX84C5V1LT1G is a Zener voltage regulator diode in a SOT-23 surface mount package. It has a voltage rating of 5.1V and a power rating of 300mW. This diode is used in a variety of electronic circuits to provide a stable voltage reference or voltage regulation. It has a low forward voltage drop and high reverse breakdown voltage, making it ideal for low power applications. The package is designed for easy soldering onto PCBs and is suitable for high-speed switching applications. The BZX84C5V1LT1G is RoHS compliant and lead-free, making it environmentally friendly. Its compact size and high reliability make it a popular choice for many electronic devices and applications