The MMBZ5243BLT1G is a Zener voltage regulator designed to provide stable voltage regulation in a compact form factor. It features a nominal Zener voltage of 13V at a test current of 9.5 mA and has a maximum Zener impedance of 13 Ohms. This device has a power dissipation rating of 225 mW and exhibits a low reverse leakage current of 0.5 µA at 9.9 V. Housed in the convenient SOT-23 package, it is well-suited for space-constrained applications such as cellular phones, handheld portables, and high-density PC boards.