Part Number : STK4142II
Function :AF Power Amplifier (Split Power Supply) (25W + 25W min, THD = 0.4%)
Manufacturer : SANYO -> Panasonic
Pinout : 
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 datasheets in the file : STK4142,STK4142II