TDA2040 amplifier circuit diagram 30W


TDA2040 amplifier circuit diagram 30W. The TDA2040 is a monolithic integrated circuit in Pentawatt  package, intended for use as an audio class AB amplifier. Typically it provides 22W output power (d = 0.5%) at Vs = 32V/4Ω. The TDA2040 provides high output current and has very low harmonic and cross-over distortion. Further the device incorporates a patented short circuit protection system comprising an arrangement for automatically limiting the dissipated power to keep the working point of the output transistors within their safe operating area. A thermal shut-down system is also included.

Tda2040 Pinout Datasheet

RATINGS TDA2040 amplifier circuit diagram 20W:

  • Vs – Supply Voltage: 12 at 32 V
  • Io- Output Peak Current (internally limited) 4 A
  • Ptot – Power Dissipation at Tcase = 75 °C: 25 W
  • Tstg, Tj – Storage and Junction Temp. -40 to 150 °C

Schematic diagram of the audio power amplifier tda2040

Tda2040 Amplifier Circuit Diagram 30W Schematic

Suggestion PCB amplifier circuit diagram tda2040

Tda2040 Amplifier Circuit Diagram 30W Schematic Pcb
Tda2040 Amplifier Circuit Diagram 30W Schematic Pcb Component View
Tda2040 Amplifier Circuit Diagram 30W Schematic Pcb Component Silk

Equivalent use TDA2050, TDA2030, Lm1875, TDa2030A

BOM to assemble the power amplifier

Last Update: 10/08/2021 22:30

Part Valor Descrição Quantidade
C1 2.2µf/63V Polyester capacitor 1
C2, C4 22µF Electrolytic capacitor 2
C3 220µF Electrolytic capacitor 1
C5 100nF Ceramic Capacitor 1
C6 220nF/63V Polyester capacitor 1
C7 2.200µF Electrolytic capacitor 1
IC1 TDA2040 Audio amplifier integrated circuit 1
Resistors 1/4W 5%
R1, R2, R3, R5 22k Red, red, orange, gold 4
R4 680 Ohms Blue, gray, brown, gold 1
R6 4.7 Ohms 2W Yellow, violet, gold, gold 1
CN1 IN (Audio Input) Terminal block 2 pin 5.08 mm 1
CN2 DC (Power Supply) Terminal block 2 pin 5.08 mm 1
CN3 OUT (Audio Output) Terminal block 2 pin 5.08 mm 1
Solder, Wires, PCB, case, power supply, heatsink for the IC, etc.

*For power supplies up to 18V, use electrolytic capacitors with a voltage of 25V, power supply up to 28V, use 35V capacitors, power supply higher than 30V use 50V capacitors.

Download the board in PDF, PNG, POSTSCRIPT and GERBER formats.


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About the author blog author. Electronics technician for the technical school of Brasilia - Brazil. Interested in electronics, circuits and technology in general.

14 thoughts on “TDA2040 amplifier circuit diagram 30W”

  1. some componant in partlist is difer from schematic diagram.[R2 is 20K and C6 is 100nF in schematic diagram, but in the part list R2 is 22K and C6 is 220nF].which is reyal

  2. Does TDA 2040 need a pre amp ,I want to connect to DTH audio output {sattelite reciever }.I have build a circuit ,but there is no sound yet .Do i need 2200 or 220micro F to my speaker ,pls reply


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