The 1SMB5924BT3G is part of the SMB series of Zener diodes manufactured by ON Semiconductor. It is a 3.9 V prominent Zener diode features low dynamic impedance and power dissipation ratings of 350 mW. It is provided in a miniature surface mount package for optimal performance. The device is designed for use in applications including bias and reference circuits, overvoltage protection circuits, and transient protection.