View bat54t1rev4 datasheet:

MOTOROLA Order this document SEMICONDUCTOR TECHNICAL DATA by BAT54T1/D Schottky Barrier Diode BAT54T1 These Schottky barrier diodes are designed for high speed switching applications, Motorola Preferred Device circuit protection, and voltage clamping. Extremely low forward voltage reduces conduction loss. Miniature surface mount package is excellent for hand held and portable applications where space is limited. • Extremely Fast Switching Speed 30 VOLT SCHOTTKY BARRIER • Low Forward Voltage — 0.35 Volts (Typ) @ IF = 10 mAdc DETECTOR AND SWITCHING DIODE 1 2 Cathode Anode 2 1 CASE 425–04, STYLE 1 SOD–123 MAXIMUM RATINGS (TJ = 125°C unless otherwise noted) Rating Symbol Value Unit Reverse Voltage VR 30 Volts Forward Power Dissipation, FR–5 Board(1) PF @ TA = 25°C 40