Application: Primarily used in a variety of audio amplification circuits, enhancing sound quality and volume. Low Distortion Power Amplifier Circuit Diagram TO-220-5 Package TDA2003 10W Audio Amplifier - Alphatronic TDA2003 Audio Amplifier People who viewed this item also viewed 50PCS TDA2003A TDA2003AV TO-220-5 IC good quality $12.88 $8.38 shipping Sponsored Specification: High-grade TDA2003 model, featuring TO-220-5 package type. Amplifiers, Parts & Accessories Chanzon TDA2003 Audio Amplifier Transistors - TO-220-5 Package (10-Piece Pack) More like this Transistor Type: Specialized Audio Power Amplifier Transistor.