This post explains for the N-Channel MOSFET.
The Part Number is K13A25D, TK13A25D.
The function of this semiconductor is 250V, 13A, N-Channel MOSFET.
The package is TO-220SIS Type
Manufacturer: Toshiba Semiconductor
Preview images :
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Description
This is Silicon N-Channel MOSFET
Features
(1) Low drain-source on-resistance: RDS(ON) = 0.19 Ω (typ.)
(2) Low leakage current: IDSS = 10 µA (max) (VDS = 250 V)
(3) Enhancement mode: Vth = 1.5 to 3.5 V (VDS = 10 V, ID = 1 mA)
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = 250 V
2. Gate to source voltage: VGSS = ± 20 V
3. Drain current: ID = 13 A
4. Power Dissipation: Pd = 35 W
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C
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Applications:
• Switching Voltage Regulators