Part Number : STK4142II
Function : AF Power Amplifier (Split Power Supply) (25W + 25W min, THD = 0.4%)
Manufacturers : SANYO -> Panasonic
Pinouts : 
Description :
* The STK4102II series (STK4142II) and STK4101V series (high-grade type) are pin-compatible in the output range of 6W to 50W and enable easy design.
* Small-sized package whose pin assignment is the same as that of the STK4101II series
* Built-in muting circuit to cut off various kinds of pop noise
* Greatly reduced heat sink due to substrate temperature
125°C guaranteed
* Excellent cost performance
Datasheet PDF Download
Other data sheets within the file : STK4142,STK4142II