This part is a kind of semiconductor called AN7135.

Function of this product has Dual 7.5W Low Frequency Power Amplifier Circuit.

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

ICs for Audio Common Use AN7135 Dual 7.5W Low Frequency Power Amplifier Circuit s Overview The AN7135 is a power amplifier circuit of 7.5W (15.0V, 3Ω) output. It can provide stereo operation since two amplifiers are incorporated in a chip. Static circuit current is very smaller than conventional IC for power amplifier, and various protective circuits are incorporated, thus providing high reliability. For its feature of very small static circuit current, it is best suitable for dry cell operating sets (e.g. radio cassette recorder). It requires smaller number of external components because it has little distortion and low noise and can support the stand-by condition. 5.9±0.25 7.7±0.3 7.8±0.25 ø 3.6 12 Unit : mm 29.96±0.3 28.0±0.3 20.0±0.2 0.6 R1.8 s Features • Small static [ ... ]

AN7135 PDF Datasheet Download