Friday, 18 April 2014

Body diodes in MOSFET symbol


As I understand, all MOSFETs have body diode. But I see some symbols have body diode shown while some not. Is there a difference in such MOSFETs?



Answer



No, there is no difference. There is no "official" MOSFET symbol, just variations on a theme. The diode will always be there regardless.



The symbols with a diode explicitly shown are very useful when the diode itself is an important part of the circuit, to serve as a reminder as to which way the diode is biased.


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