The SM6T15AY (STGF15AY) is a low voltage P-channel Enhancement Mode MOSFET (Field Effect Transistor) manufactured by STMicroelectronics. It is a surface mount transistor with an operating voltage range of -1 to -20 volts and a maximum drain current range of -1.7 to -15A. This MOSFET features fast switching speeds, low on-resistance, high power and current handling, and high reliability. It is widely used in various control and power applications requiring low voltage, high performance, and efficient power management.