Timeline for Why is the arrow on this MOS transistor IC common?
Current License: CC BY-SA 4.0
7 events
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| Mar 31, 2021 at 19:50 | comment | added | DKNguyen | @ThreePhaseEel Interesting. I did not know that. I always assumed you only saw it on signal transistors because of the more diverse uses. | |
| Mar 31, 2021 at 16:25 | comment | added | supercat | @ThreePhaseEel: I think that even on large-signal transistors one would have a choice of how to make the body connection except that half of the available connection surface area is on the substrate, and so connecting a lead to the substrate and then shorting that to the source avoids the need to use top-side surface area for the source connection. In an IC, one generally wants transistor source connections to be on the same side of the chip as everything else, but in a discrete transistor having it on the opposite side allows better electrical connectivity. | |
| Mar 31, 2021 at 11:45 | comment | added | ThreePhaseEel | Much of the issue with the body connection is that you can only break it out on lateral FET structures, which are only good for small-signal work. The vertical (V, trench) MOSFET structure used almost universally for power-switching FETs doesn't give you much of a choice as to where the body connection gets made... | |
| Mar 30, 2021 at 23:03 | history | edited | DKNguyen | CC BY-SA 4.0 |
added 157 characters in body
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| Mar 30, 2021 at 23:00 | vote | accept | richbai90 | ||
| Mar 30, 2021 at 22:58 | history | edited | DKNguyen | CC BY-SA 4.0 |
added 157 characters in body
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| Mar 30, 2021 at 22:52 | history | answered | DKNguyen | CC BY-SA 4.0 |