BUY B0540WS-7 https://www.utsource.net/itm/p/11279890.html
B0540WS-7 SBD Schottky Barrier Diodes 40V 500mA/0.5A 480mV/0.48V SOD-323 marking SF Schottky Rectifiers low forward voltage
Description: The B0540WS-7 is a 400mW surface mount Zener diode in a SOD-323 package. Features: Low profile surface mount package High temperature soldering guaranteed: 260°C/10s ESD protection: Class 3 (>16kV) per Human Body Model Low leakage current High stability Low noise Applications: Voltage regulation Voltage stabilization Voltage clamping ESD protection General purpose switching (For reference only)