This post explains for the MOSFET.
The Full Part Number is 2SK2698, K2698.
The function of this semiconductor is 500V, 15A, N-Channel MOSFET.
The manufacturers of this product is Toshiba Semiconductor.
See the preview image and the PDF file for more information.
Preview images :
This is 500V, 15A, Silicon N Channel MOS Type Field Effect Transistor.
1. Low drain-source ON resistance : RDS (ON) = 0.35 Ω (typ.)
2. High forward transfer admittance : |Yfs| = 11 S (typ.)
3. Low leakage current : IDSS = 100 μA (max) (VDS = 500 V)
4. Enhancement mode : Vth = 2.0~4.0 V (VDS = 10 V, ID = 1 mA)
Absolute Maximum Ratings (Ta = 25°C)
1. Drain-source voltage: VDSS = 500 V
2. Drain-gate voltage (RGS = 20 kΩ): VDGR = 500 V
3. Gate-source voltage: VGSS = ±30 V
4. Drain power dissipation (Tc = 25°C): PD = 150 W
5. Single pulse avalanche energy (Note 2) : EAS = 630 mJ
6. Avalanche current : IAR = 15 A
7. Repetitive avalanche energy (Note 3) : EAR = 15 mJ
8. Channel temperature: Tch = 150 °C
1. DC-DC Converter
2. Relay Drive and Motor Drive