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Comments on Why are there more N type than P type MOSFETs?

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Why are there more N type than P type MOSFETs?

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I was looking at different transistors, especially MOSFETS and I saw that N type MOSFETs seem to be way more popular to be used in circuit design. Is there a reason for that, or am I mistaken?

MOSFET
posted over 2 years ago
2y ago by Mu3‭
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crusadEEr‭
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1 comment thread

I recommend reading this app note (1 comment)
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One reason could be that N type MOSFET can switch loads that are in Drain, meaning that whatever the load voltage, you can turn it on/off directly with any microcontroller, provided that the MOSFET is 5V or 3.3V logic level. You could invert it and do the same with P-Channel, but N-Channel just feels more natural, since it shares common ground. Furthermore, going into design details, N-Channel MOSFETS have faster switching due to higher electron-hole mobility. Due to this, P-Channel MOSFETS have a higher resistance when fully on.

Presumably these characteristics lead to N-Channel being more common.

posted over 2 years ago
2y ago
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Kranulis‭
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4 comment threads

@Olin. After your action, who would want to leave any comment after downvoting? You create a Meta to ... (1 comment)
+1 for the undeserved downvote (13 comments)
I also think this is a bad answer. There are several statements made that are incorrect or misleading... (2 comments)
I downvoted this answer because the first half "One reason" -- "3.3V logic level" is hardly understan... (5 comments)
I also think this is a bad answer. There are several statements made that are incorrect or misleading...
Elliot Alderson‭ wrote over 2 years ago
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I also think this is a bad answer. There are several statements made that are incorrect or misleading, and I don't care that an experienced engineer will know what Kranulis means...I care that an unexperienced reader will be seriously confused. "can switch loads that are in Drain"...PMOS also switch loads connected to their drain. "You could invert it and do the same with P-Channel"...no, not if your "whatever the load voltage" condition still applies. "P-Channel MOSFETS have a higher resistance"...not necessarily, and certainly not when comparing the worst NMOS to the best PMOS. At the very least Kranulis should add "for a given W/L ratio". Finally, "feels more natural" has never been a driver for manufacturing NMOS vs. PMOS.

coquelicot‭ wrote over 2 years ago · edited over 2 years ago
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Hello Elliot. There is an important discussion in Meta about making downvotes public. Since you are here, I'm taking the unusual step of letting you know that. Of course, if you participate to the debate, feel free to downvote my opinion and express a different opinion.