Part Number : 2SJ28
Function : P-Channel VFET for TA-N88 Class D AMP
Manufacturers : SONY SEMICONDUCTOR
Pinouts : 
Description :
2SJ28 is a very special P Channel Vertical Field Transistor (VFET) used in Sony Class First Class-D Amplifier (Model: TA-N88(B).
2SJ28 Datasheet PDF Download
Other data sheets within the file : J28