View 2sk3018 datasheet:

Transistor Small switching (30V, 0.1A) 2SK3018 FFeatures FExternal dimensions (Units: mm) 1) Low on-resistance. 2) Fast switching speed. 3) Low voltage drive (2.5V) makes this device ideal for portable equipment. 4) Easily designed drive circuits. 5) Easy to parallel. FApplications Interfacing, switching (30V, 100mA) FStructure Silicon N-channel MOSFET FEquivalent circuit FAbsolute maximum ratings (Ta = 25_C) 170 Transistor 2SK3018 FElectrical characteristics (Ta = 25_C) FPackaging specifications FElectrical characteristic curves Fig.1 Typical output characteristics Fig.2 Typical transfer characteristics Fig.3 Gate threshold voltage vs. channel temperature 171 Transistor 2SK3018 Fig.6 Static drain-source on-state resistance vs. gate-source voltage Fig.7 St