BUY BZV49-C43 https://www.utsource.net/itm/p/8981440.html
BZV49-C43 Zener Diodes 43V 1W SOT89-43V marking 43Y
Description: The BZV49-C43 is a 43V Zener diode in a SOT89 package from NXP/Philips. Features: Low forward voltage drop High temperature stability Low leakage current High surge current capability High reliability Applications: Voltage regulation Voltage clamping Voltage stabilization Surge protection (For reference only)