Part Number : 2SJ28
Function :Sony P Channel VFET for TA-N88 Class D AMP
Manufacturer : SONY SEMICONDUCTOR
Pinout : 
Description
2SJ28 is a very special P Channel Vertical Field Transistor (VFET) used in Sony Class First Class-D Amplifier (Model: TA-N88(B).
Datasheet PDF Download
Other datasheets in the file : 2SJ28