[sdiy] Difference in 2SK30, 30A, 30AY, 30 ATM, etc

[aankrom]

Whelp, I see "ATM" used for TO-92 versions of the 2SK30 as well. 
Hmmm...

On Mon, 19 Sep 2011 08:49:19 -0400, aankrom wrote:
> I think "ATM" just stands for the little package instead of the
> classic TO-92. What you should look for is 'O', 'Y', or 'GR': this is
> the IDSS classification, the amount of current that flows between the
> Drain & the Source when zero voltage is on the Gate. This is
> approximately comparable to hFE in bipolar transistors. I really have
> never known the advantages of having a high or low IDSS in switching
> applications. I think with an amp, a higher IDSS is better for gain. 
> I
> could be wrong. Different manufacturers may use other codes than the
> "color name" codes (that's what _I_ call them...).
>
> Check out this link maybe:
> http://www.diystompboxes.com/smfforum/index.php?topic=85270.0

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