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Date: | Mon, 19 Jan 2015 12:50:47 +0100 |
From: | Gabriel Paubert <paubert AT iram DOT es> |
To: | geda-user AT delorie DOT com |
Subject: | Re: [geda-user] HIDDEN PINS IN A SYMBOL |
Message-ID: | <20150119115047.GA22574@visitor2.iram.es> |
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On Sun, Jan 18, 2015 at 01:58:27PM -0500, DJ Delorie wrote: > > > Slightly not directly related to symbols, but it always sstrikes me as > > odd that some (actually most for that kind of part) manufacturers > > decide to use four pins for the drain, but only one for the source > > terminal. > > I always assumed the drain was on the bottom of the wafer, and that > the extra pins were for heat dissipation... The OnSemi app note > for their ChipFET line say: Correct: http://www.micross.com/pdf/fairchild/mosfet/FDB031N08_MOSFET_DIE.pdf Gabriel
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