The BZT52B39 is a single Zener diode with a voltage rating of 39V and a power rating of 500mW. It is designed for use in various electronic applications that require voltage regulation and protection. The diode has a forward voltage of 900mV @ a forward current of 10mA, and a reverse leakage current of 100nA @ a reverse voltage of 27.3V. With a maximum impedance of 130 Ohms, it provides efficient voltage regulation and stability. The BZT52B39 is surface mountable and comes in a SOD-123 package, making it easy to integrate into circuit designs. It operates within a wide temperature range of -65°C to 150°C, ensuring reliable performance in various environments. Manufactured by GOOD-ARK Electronics, this Zener diode is an active product in the market.