This Part Name is STK4191V.
This is Semiconductor.
This product has AF Power Amplifier (Split Power Supply) (50W + 50W min / THD = 0.08%) functions.
Manufacturers of the product is Sanyo
Image and pinout :
Some of the text files within the PDF file :
Ordering number: EN1651B Thick Film Hybrid IC STK4191V AF Power Ampliﬁer (Split Power Supply) (50W + 50W min, THD = 0.08%) Features • Built-in muting circuit to cut off various kinds of pop noise. • Greatly reduced heat sink due to substrate temperature 125°C guaranteed. • Distortion 0.08% due to current mirror circuit. • Pin-compatible with the STK4101II series. The STK4101V series use the same package and are available for output 6W to 50W. • Excellent cost performance. Package Dimensions unit: mm 4040 [STK4191V] Speciﬁcations Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Thermal resistance Junction temperature Operating substrate temperature Storage temperature Available time for load short-circuit Symbol VCC max θj-c Tjmax Tc Tstg ts VCC = ±35.5V, RL = 8Ω, f = 50Hz, PO = 50W Conditions Ratings ±53 1.8 150 125 −30 to +125 2 Unit V °C/W °C °C °C s Recommended Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Load [ ... ]