MMSZ18ET1G

The MMSZ18ET1G is a Zener voltage regulator diode from ON Semiconductor's MMSZxxxET1G series. It provides a nominal Zener voltage of 18V with ±5% tolerance, making it suitable for voltage regulation and clamping applications. The device is rated for a maximum power dissipation of 500mW on FR-4 or FR-5 boards, with a peak power capability of 225W for 8x20 μs pulses. Electrical characteristics include a maximum forward voltage of 900mV at 10mA, a reverse leakage current of 50nA at 12.6V, and a Zener impedance of 45Ω. The diode is ESD rated at Class 3 (>16kV per Human Body Model) and is AEC-Q101 qualified for automotive applications. The MMSZ18ET1G is packaged in a surface-mount SOD-123 case, which is void-free, transfer-molded thermosetting plastic. It is supplied in tape and reel packaging with 3000 units per reel. The device is Pb-free and RoHS compliant (RoHS3), with UL 94 V-0 flammability rating. Operating temperature range is -55°C to 150°C. Thermal resistance junction-to-ambient is 340°C/W and junction-to-lead is 150°C/W.