BUY BZT52C4V7-13 https://www.utsource.net/itm/p/11274971.html
BZT52C4V7-13 Zener Diodes 4.7V 500mW/0.5W SOD123/1206-4.7V marking K5
Description: The BZT52C4V7-13 is a 4.7V Zener diode from Liteon. Features: * Low leakage current * Low reverse current * Low forward voltage drop * High surge current capability Applications: The BZT52C4V7-13 is suitable for use in voltage regulation, overvoltage protection, and other applications that require a low voltage Zener diode. (For reference only)