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

 Single N-Channel 20 V 0.5 W 5 nC DMOS Surface Mount Mosfet - 

SOT-23

https://www.futureelectronics.com/p/semiconductors--discretes--transistors--mosfets/nds331n-onsemi-3910270