This is one of the types of MOSFETs and is a kind of transistor.
Part Number: K8A50D, K8A500, TA8A500
Function: Silicon N Channel MOS Type Field Effect Transistor
Package: TO-220 Type
Manufacturer: Toshiba
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Description
This is 500V, 8A, N-Channel MOSFET.
Correct Part Number K8A50D, Full Part Number TA8A50D
Features
1. Low drain-source ON-resistance: RDS (ON)= 0.7 Ω(typ.)
2. High forward transfer admittance: |Yfs| = 4.0 S (typ.)
3. Low leakage current: IDSS= 10 μA (max) (VDS= 500 V)
4. Enhancement mode: Vth= 2.0 to 4.0 V (VDS= 10 V, ID= 1 mA)
Pinout
Absolute Maximum Ratings (Ta = 25°C)
1. Drain to source voltage: VDSS = 500 V
2. Gate to source voltage: VGSS = ± 30 V
3. Drain current: ID = 8 A
4. Drain Power Dissipation: Pd = 40 W
5. Channel temperature: Tch = 150 °C
6. Storage temperature: Tstg = -55 to +150 °C
Electrical Characteristics
Applications:
1. Switching Regulator