2d 15Marking: 2D-15. Part #: KST92. Package: SOT-23. Datasheet: 46Kb4P. Manufacturer: Fairchild Semiconductor. Description: Hh Voltage Transistor. 131 Results.You can create a 2D water effect by mixing sin waves (shader) with a 2D collider. For those interested, I'll be updating The Unity Shaders