If you are looking for a high wattage part for an amplifier the 450W IRFPS37N50A is big.
One pair of these in a class AB amplifier should do over 400W.
About $5
One pair of these in a class AB amplifier should do over 400W.
About $5
"then how do think about the irf1404, powerful enough?"
For what? Its a low voltage switch.
If that's what you need then buy one.
If I was building a linear amplifier it would not be on my list as a possible output device.
For what? Its a low voltage switch.
If that's what you need then buy one.
If I was building a linear amplifier it would not be on my list as a possible output device.
What would you like to build?
The IRF1404 would be suitable for the original Zen design from Nelson Pass, but that's about it.
I noticed we use a lot of IRFP360 at work, our cost is only $1.15 each. These are in the larger TO247 package, easier to heatsink than the smaller TO220 package that the IRF1404 is in. A 250W amplifier could be made from a single pair of these. We also use the IFRP250 at $0.77 each, a pair of these could be run at 200W in class AB with a good sized heatsink.
The cost of the chassis, heatsink, and power supply tend to make the cost of the transistors not matter.
The IRF1404 would be suitable for the original Zen design from Nelson Pass, but that's about it.
I noticed we use a lot of IRFP360 at work, our cost is only $1.15 each. These are in the larger TO247 package, easier to heatsink than the smaller TO220 package that the IRF1404 is in. A 250W amplifier could be made from a single pair of these. We also use the IFRP250 at $0.77 each, a pair of these could be run at 200W in class AB with a good sized heatsink.
The cost of the chassis, heatsink, and power supply tend to make the cost of the transistors not matter.
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