This part is a kind of semiconductor called KIA6282K.

Function of this product has 4.6W DUAL AUDIO POWER AMPLIFIER.

Manufacturers : KEC

Image and pinout :

Some of the text within the PDF file :

SEMICONDUCTOR TECHNICAL DATA KIA6282K BIPOLAR LINEAR INTEGRATED CIRCUIT 4.6W DUAL AUDIO POWER AMPLIFIER KIA6282K is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON/OFF switch. Because of the parts reduction and SIP (Single Inline Package), space merit is remarkable. Thermal shut down protection circuit is built in. R G H1 H2 A F S Q B L1 L2 FEATURES High Power. POUT=2.5W/CH (Typ.) : (VCC=9V, RL=4 , f=1kHz, THD=10%) POUT=4.6W/CH : (VCC=12V, RL=4 , f=1kHz, THD=10%) Low popping noise at power ON. Small Quiescent Current. : ICCQ=19mA (Typ.) (VCC=9V, VIN=0) Soft Clip. Built-in thermal shut down protection circuit. Best for supply voltage 9V, 12V. Operation supply voltage range : VCC=6~15V. DETAIL "A" P d D1 d D2 DETAIL " [ ... ]

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