MMSZ5242BT1G

The MMSZ5242BT1G is a 12V Zener diode from ON Semiconductor, part of the MMSZ52xxxT1G series. It is designed for voltage regulation applications with a nominal Zener voltage of 12V and a power dissipation of 500mW on standard FR-4 or FR-5 boards. The device offers a maximum Zener impedance of 30Ω and a typical forward voltage of 900mV at 10mA. Reverse leakage current is limited to 1µA at 9.1V. The diode is rated for an operating temperature range of -55°C to 150°C. It features an ESD rating of Class 3 (>16 kV) per Human Body Model and a flammability rating of UL 94 V-0. The junction-to-ambient thermal resistance is 340°C/W, and junction-to-lead is 150°C/W. The device is housed in a surface-mount SOD-123 package, supplied in tape and reel with a standard quantity of 3000 units. The MMSZ5242BT1G is Pb-Free and RoHS compliant. Zener diodes are widely used in voltage regulation, overvoltage protection, and reference voltage circuits. The 12V nominal voltage combined with the 500mW power rating makes this device suitable for low-power voltage regulation in consumer electronics, automotive, and industrial applications. The SOD-123 package allows for high-density board assembly and automated placement.