Mini Digital Power Amplifiers 3W Dual Track Red PAM8403

(2 customer reviews)

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SKU: 31250
  1. Input Voltage : 2.5-5.5 V(USB power supply).
  2. Output Impedance : 4 ohm.
  3. Efficiency : 90%.
  4. Frequency Response : 150 Hz – 20 KHz.
  5. Input Impedance : 2 Kohm.
  6. Dimensions : 15 x 20 mm.


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Category: Breakout Board

The Mini Digital Power Amplifiers 3W Dual Track Red PAM8403 provides Class AB power amplifier performance with Class D amplifier efficiency. The use of low noise, no filter structure can save the traditional D class amplifier output low pass filter. Requires very few external components, thus saving PCB space and system cost, is ideal for portable applications.

The PAM8403 provides 3W of power at efficiencies greater than 90% with both system shutdown and mute control. Special line architecture enhances anti-noise capability and reduces RF interference.
PAM8403 Features: No filter Class D amplifier, low quiescent current, and low EMI, up to 3W output power at 4 load and 5v power supply conditions. Up to 90 ℅ efficiencies, low THD, low noise, short circuit current protection, thermal protection, very few external components, saving cost and space.

Features :

  1. A d-type amplifier without a filter, low quiescent current, and low EMI.
  2. When connects with a 4-ohm load and 5V power supply, the output power can be up to 3W.
  3. Low THD, low noise.
  4. Short circuit protection; thermal protection.

Package Includes :

1 x Mini Digital PAM8403 Power Amplifiers 3W Dual Track Red.

SKU: 31250 Category:
Operating Voltage (VDC)

2.5 ~ 5.5

Output Power(Watt)


Input Impedance

2 Kohm.

Output Impedance

4 ohm.



No. of Sound Channel


Frequency Response

50 Hz – 20 KHz.

Dimensions (LxWxH) mm

15 x 20 x 4

Weight (g):


Shipping Weight 0.01 kg
Shipping Dimensions 5 × 3 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 2 reviews

4.5 overall

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  1. Partha Sur (verified owner)

    Good amplification. Worth buying.

    Partha Sur

  2. K.deb66 (verified owner)

    Crystal clear Sound. Pam 8403 3+3w small audio board very small size than coin. Sound too good. Received my package very good wrap, I like it.


PAM8403 datasheet

Questions and answers of the customers

    A similar board I purchased online used a 2mm pitc... Read more
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    Q A similar board I purchased online used a 2mm pitch, so it's not breadboard friendly. What pitch ...... Read more
    Asked by Ketan Padegaonkar on November 24, 2020 7:40 am
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Country Of Origin: China