This post explains for the amplifier.
The Part Number is STK402-071, STK-402071.
The function of this semiconductor is 2 Channel AF Power Amplifier.
The package is Zip 15 Pin Type
Manufacturer: Sanyo
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Description
STK402-071 is 2 Channel AF Power Amplifier. An AF (audio frequency) power amplifier is an electronic amplifier designed to amplify audio signals in the audible frequency range, typically from 20 Hz to 20,000 Hz. These amplifiers are used to increase the power of audio signals, making them suitable for driving speakers or other audio transducers. AF power amplifiers are a critical component in audio systems, including stereo systems, home theaters, public address systems, musical instrument amplifiers, and more.
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Absolute maximum ratings ( Ta=25°C )
1. Power Supply Voltage with no signal : Vcc = ± 50 V
2. Power Supply Voltage : Vcc max(1) = ± 44 V
3. Junction Temperature: Tj = 150°C
4. Operating Substrate Temperature : Tc = 125°C
5. Storage Temperature: Tsg = -30 ~ +125°C
Block Diagram
Applications:
1. Audio use
2. Home audio systems, professional sound reinforcement systems
3. Musical instrument amplification, car audio systems
Note ]
All tests are measured using a constant-voltage supply unless otherwise specified.
