The RB491D with Schottky Barrier Diodes SOT-23-3 package is a RoHS compliant diode manufactured by Changjiang. It is a three-pin, small surface mount, assembly-level product designed for medium current signal line protection applications. It is a low forward voltage drop diode, with a forward voltage of 0.3V. It has a reverse breakdown voltage of 20V, and its typical peak current is 40mA. Its maximum total power dissipation is 150 mW, and its junction temperature range is -55°C to 150°C. It features a high surge capability, and its maximum surge current is 70A. Its capacitance values are also low, making it highly efficient for power electronics applications. It contains a single SBD SOT-23 (SOT-23-3) package. The package pins are labeled 'C', 'B' and 'E'.