Nexperia BSS138AK N-Channel Trench MOSFETs are enhancement mode Field-Effect Transistors (FETs) in small surface mount packages. These devices utilize Trench MOSFET technology and are logic-level compatible. The AEC-Q101-qualified BSS138AK MOSFETs are ideal for relay drivers, high-speed line drivers, low-side load switches, and switching circuit applications.