This post explains for the semiconductor K2961.
The Part Number is K2961.
The function of this semiconductor is 2SK2961.
Manufacturers : Toshiba Semiconductor, Package : TO-92MOD Type
Preview images :
2SK2961 TOSHIBA Field Effect Transistor Silicon N Channel MOS Type (L −π−MOSV)
Relay Drive, Motor Drive and DC−DC Converter
? Low drain−source ON resistance : RDS (ON) = 0.2 Ω (typ.)
? High forward transfer admittance : |Yfs| = 2.0 S (typ.)
? Low leakage current : IDSS = 100 μA (VDS = 60 V)
? Enhancement mode : Vth = 0.8~2.0 V (VDS = 10 V, ID = 1 mA) […]