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200+200 Watts Stereo Amplifier IRFP260N Mosfet


2. 2×C5198 Transistor.
3. 2×A1941 Transistor
4. 2×A1837 Transistor.
5. 4×MJE340 Transistor.
6. 4×2N5401 Transistor.
7. 4×100pF (101) capacitor 100V.
8. 4×470pF (471) capacitor 100V.
9. 2×0.1uF (104) capacitor 250V.
10. 4×100uf capacitor 100V.
11. 2×2.2uf capacitor 50V.
12. 4×0.33Ω resistor 5W.
13. 2×10Ω resistor 5W.
14. 2×4.7kΩ resistor 1W.
15. 4×100Ω resistor 1W.
16. 2×10Ω resistor 1W.
17. 4×10Ω resistor 1W.
18. 2×33Ω resistor 1/4W.
19. 6×150Ω resistor 1/4W.
20. 2×1kΩ resistor 1/4W.
21. 2×10kΩ resistor 1/4W.
22. 4×68kΩ resistor 1/4W.
23. 3×33kΩ resistor 1/4W.
24. 4×3.3kΩ resistor 1/4W.
25. 6×1N4007.
26. 2×Zener Diode 24 volt 1w or 1/2w.
27. 1×GJB2510. (25 Amp)
28. 2×10000uf 80V capacitor.
29. 2×5uH coil (1.6mm/ 16 gauge copper wire)
30. 1×3 pin connecter base 2.54 mm.
31. 7×6.3 mm vertical PCB terminal
32. 1×100k Dual gang potentiometer.
License:- ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.


How I make this amplifier

This is a class AB stereo amplifier. Which can deliver up to 200 Watts RMS output at 8Ω ±70V, Test frequency 1khz. And 300 Watts RMS output at 4Ω ±60V, Test frequency 1khz. For this amplifier I used 1 pair of IRFP260N Mosfet per channel but you can also use 2SC2922 Transistor in place of IRFP260N Mosfet. If you want to make this amplifier, you need IRFP260N Mosfets of same batch. And if you don't use same batch of Mosfets then there is a possibility of burn these Mosfets. So my recommendation, If you don't get same batch of Mosfets then you use 2SC2922 transistor.

Manufacturing PCB with PCBWay

For designing my PCB, I used EasyEda online software. Then I export the Gerber file (which you can download). And then I go to for manufacturing my PCB. PCBWay are the largest PCB manufacturer in China. They offer Standard PCB, Advanced PCB, Rigid-Flex PCB, SMD-Stencil and PCB Assembly Service. Here you get, 100x100mm 2 Layer PCB only at $5, And processing time within 24 hour. And they distribute, worldwide. The more you order, the less price you have to pay.

You just need to upload the Gerber File, and select the quantity, color, silkscreen, thickness etc. Then select your country, and shipping method. And then Pay.

After 7 days I have received my PCB. You can see the PCB quality, it's awesome. I have ordered Red color PCB. But you can choose your PCB color. PCBWay provide total 9 color solder mask - Green, Blue, Red, Purple, Black, White, Yellow, Matte Black and Matte Green. On PCBWay you can get 100x100mm 2 Layer PCB only at $5. Maximum size PCB you can get 500x1100mm. And maximum Layer is up to 14 Layers. And If you order PCB first time at PCBWay, then you get a $5 discount coupon. So upload your Gerber today and get best quality PCB.

How to Test this Amplifier

Series light test:- After complete this board don't forget to series light test. When you will on this amplifier via series light, it glow for some time (1 - 2 sec). Then series light will turned off fully. If the series light will fully turned off, then check the voltages.

Check Voltages:- Biasing = 0.5-0.7V (A1837 Collector). Check Speaker Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect preamplifier to input and connect speaker to output.

Power Supply:- For get best performance of this amplifier, you use 45-0-45V to 55-0-55V 6A-8A Transformer.

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  1. I tried it but 100 ohms and 150 ohms on the negative side burns