The SMF28CA with 4.4A 1uA 45.4V 31.1V 28V 34.4V Bi-Directional SOD-123FL TVS ROHS is an electrostatic discharge protection device manufactured by GOODWORK. It is specifically designed for use in the automotive industry, and is capable of providing protection against surges, spikes, and other common electrostatic discharge (ESD) events. The device features low capacitance, a very low clamping voltage, and a wide operating temperature range. In addition, the device has a low leakage current and reverse bias protection. The SOD-123FL package makes it suitable for burning, soldering, and secure mounting in automotive applications.