Mosfet power transistor, audio mosfet, what does a mosfet do, power mosfet

 BUK9Y19 Series 100 V 19 mOhm SMT N-Channel Logic Level MOSFET - LFPAK-56

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/buk9y19-100e-115-nexperia-8092797