Datasheet by diode

[Filiberto]

Could someone tell me what type of diode I have? I can't find any data.
L X GP128
I appreciate your help.

[TDK · Accepted solution]

"LX" marking = SM6T15CA

600 W TVS diode in SMB package

https://www.st.com/resource/en/datasheet/sm6t39a.pdf

[Filiberto]

It makes a lot of sense, I appreciate your support.