How do you like this symbol? ;-)
As for MOSFETs, the arrow represents the substrate-channel diode. It always makes me shake my head when I see those symbols with the parasitic zener explicitly piggybacked, as though it were an entirely seperate element (which is isn't, though schottky-backed MOSFETs and FRED-backed IGBTs exist, but neither is the pure MOSFET we're talking about). It's as if people don't even know the meaning of the symbol they're using.
Tim
And that leaves holes everywhere.
Isn't there a charge for that?
Ed
1.60217733 (49) e-19
...Jim Thompson
Certainly, and it's taxing.
Tim has the best answer. The diode junction represented by the arrow in a MOSFET symbol is reverse biased under normal operating conditions.
Its there to remind you of which way not to connect the device as well as to represent a junction capacitance to the substrate.
Sheesh! 2 of those would be electronically re-volting.
Ed
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