This post explains for the MOSFET.
The Part Number is K2962, 2SK2962.
The function of this semiconductor is 100V, 1A, N-channel MOSFET.
The package is TO-92 Type
Manufacturer: Toshiba Semiconductor
Preview images :
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Description
This is 100V, 1A, N-channel MOSFET.
Features
1. 4-V gate drive
2. Low drain−source ON resistance : RDS (ON) = 0.5 Ω (typ.)
3. High forward transfer admittance : |Yfs| = 1.2 S (typ.)
4. Low leakage current : IDSS = 100 μA (max) (VDS = 100 V)
5. Enhancement mode : Vth = 0.8~2.0 V (VDS = 10 V, ID = 1 mA) […]
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Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = 100 V
2. Gate to source voltage: VGSS = ± 20 V
3. Drain current: ID = 1 A
4. Drain Power Dissipation: Pd = 0.9 W
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C
Applications:
1. Chopper Regulator, DC−DC Converter and Motor Drive