This post explains for the MOSFET.
The Part Number is K2232, 2SK2232.
The function of this semiconductor is 60V, 25A, N-ch, MOSFET.
The package is TO-220 Type
Manufacturer: Toshiba Semiconductor
Preview images :
The K2232 is Silicon N Channel MOS Type Field Effect Transistor.
1. 4-V gate drive
2. Low drain−source ON resistance : RDS (ON) = 36 mΩ (typ.)
3. High forward transfer admittance : |Yfs| = 16 S (typ.)
4. Low leakage current : IDSS = 100 μA (max) (VDS = 60 V)
5. Enhancement mode : Vth = 0.8~2.0 V (VDS = 10 V, ID = 1 mA)
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = 60 V
2. Gate to source voltage: VGSS = ± 20 V
3. Drain current: ID = 25 A
4. Allowable Power Dissipation: Pd = 35 W
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C
1. Chopper Regulator
2. DC−DC Converter and Motor Drive