Analog MAT02 and Toshiba 2sk389 compatibility?

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luvdunhill

luvdunhill

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Joined 2006
I've seen a few circuits where the MAT02 was substituted *directly* for the 2sk389, despite the 2sk389 being a dual FET. Is there a generalizable rule that defines when and where this is possible? Only issue I could see is that the MAT02 might have too much gain, but I'm not exactly sure how to compare the two...

Thanks!
 
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