IRF540 or IRF3710............................ - diyAudio
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Old 6th November 2009, 09:42 PM   #1
mosfet1 is offline mosfet1  Italy
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Unhappy IRF540 or IRF3710............................

Hello somebody can help me? I've to change some IRF540 , and I've a lot of IRF3710, can I use the last without problems? I don't know if IRF3710 are good for audio power amplifier......
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Old 6th November 2009, 09:50 PM   #2
Zen Mod is offline Zen Mod  Serbia
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it really depends of type of amplifier , but - at quick look on data ( even if I don't have data for 7310 dynamic capacitance ) I can't see why not ...
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Old 6th November 2009, 10:13 PM   #3
mosfet1 is offline mosfet1  Italy
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You mean the imput capacitance? The IRF3710 input capacitance it's bigger than IRF540 (3130 vs. 1700)...
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Old 6th November 2009, 10:16 PM   #4
Zen Mod is offline Zen Mod  Serbia
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if driver stage is capable to drive it .... why not ;

anyway - without schematic of amplifier , nobody can't tell you how big difference will be
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Old 6th November 2009, 10:28 PM   #5
mosfet1 is offline mosfet1  Italy
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The amp it's an arcam alpha 5, on the final stage the mosfets are died and I've to change them all.
Arcam says that "substitutes" are IRF540 or IRF 640, but I have many Irf3710 and to me (if I'm not blind) the irf 3710 looks more similar to first ones than 640 types......
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Old 6th November 2009, 10:39 PM   #6
Zen Mod is offline Zen Mod  Serbia
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in that case - just go for it , and let your ears decide ;

after all - that's not nuclear physics
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Old 6th November 2009, 10:57 PM   #7
mosfet1 is offline mosfet1  Italy
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Quote:
Originally Posted by Zen Mod View Post
in that case - just go for it , and let your ears decide ;

after all - that's not nuclear physics
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