BUY SS0540 https://www.utsource.net/itm/p/11279312.html
SS0540 SBD Schottky Barrier Diodes 40v 500mA/0.5A 420mV/0.42V SOD-123/1206 marking B4 fast switch
Description: SS0540 is a surface mount Schottky diode with a SOD-123/1206 package.
Features:
* Low forward voltage drop
* High current capability
* High surge current capability
* High reliability
Applications:
* Switching power supplies
* DC/DC converters
* Battery chargers
* Automotive electronics
* Telecommunications
(For reference only)