This part is a kind of semiconductor called LA4270.

Function of this product has Monolithic Linear IC.

Manufacturers : Sanyo Semicon Device

Image and pinout :

Some of the text within the PDF file :

Ordering number:ENN1724D Monolithic Linear IC LA4270 6W Dual-Channel AF Power Amplifier Features • High-output dual-channel AF Power IC. (PO=6.0W×2, VCC=25V, RL=8Ω, f=1kHz, THD=1.0%) • Low distortion (THD=0.1%, VCC=25V, RL=8Ω, f=1kHz, PO=2W). • Minimum number of external parts requierd (no boot- strap capacitor requierd). • Low pop noise at the time of power switch ON/OFF. • High ripple rejection (58dB typ). • Wide supply voltage range (10V to 32V). • On-chip protector against abnormality (thermal shutdown, overvoltage). 8.4 7.0 Package Dimensions unit:mm 3024A-SIP10H [LA4270] 27.0 20.0 11.8 R1.7 13.2max 4.0 1.0 min 6.0 1 1.4 10 0.5 2.54 2.07 0.4 2.0 Specifications SANYO : SIP10H Absolute Maximum Ratings at Ta = 25˚C Parameter Symbol Conditions Maximu [ ... ]

LA4270 PDF Datasheet Download