Co., LtdThe MMSZ5255B with SOD-123 Zener Diodes ROHS is a 5.0 V, 5 W, surface mount Zener diode made by Changjing Electronics Technology Co., Ltd. It is an ultra-low power consumption, RoHS compliant device. It can protect against static electricity, reverse polarity, over-voltage, and over-current events. It features a low thermal resistance of 3.9 K/W, so it can be used in applications where power dissipation must be kept to a minimum. The SOD-123 package is suitable for reflow soldering.