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Make P-channel FET description polarity negative

Uli Köhler requested to merge ulikoehler/kicad-symbols:pchannel-polarity into master

For all PFETs I could find where there's not also a NFET in the same package.

Both Id and Vds should be negative for PFETs

Typical enhancement in this pull request:

-    (property "ki_description" "45A Id, 30V Vds, TrenchFET P-Channel Power MOSFET, 8.7mOhm Ron, 90nC Qg, -55 to 150 °C, TO-252-2" (at 0 0 0)
+    (property "ki_description" "-45A Id, -30V Vds, TrenchFET P-Channel Power MOSFET, 8.7mOhm Ron, 90nC Qg, -55 to 150 °C, TO-252-2" (at 0 0 0)

As discussed briefly with @johnbeard on Zulip.

Other fixes:

  • AON6411 (for better searchability): P-Channel MOSFET, -85A Id, -20V Vds, DFN-8 => -85A Id, -20V Vds, P-Channel MOSFET, DFN-8
  • IRF7309IPBF Add "N- and P-Channel" IRF7343PBF Add "N- and P-Channel", fix datasheet link.
  • Center CSD25302Q2 (its nw only "slightly off center")
Edited by Uli Köhler

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