Manager board: pick the USB-C part (GCT USB4105-GF-A)

HANDOVER.md

@@ -199,8 +199,8 @@ Notable route_board facts a future session needs:
    KiCad (table + per-item coords in the resume section), then
    `../common/finish_board.py` (silk + planes + fab) and `run_drc.py`.
 2. **Phase-3 manager board — routed (2026-09-27).** Review before ordering:
-   the J3 breakout is tied to the USB4105 land pattern while the USB-C part
-   is still an open pick; 13 nets cross under the USB pair on B.Cu (fine at
+   J3 is the GCT USB4105-GF-A (C3020560, picked 2026-09-28 to match the
+   routed land; JLCPCB assembly stock, backup -120 C5184243); 13 nets cross under the USB pair on B.Cu (fine at
    full speed); the 0.2 mm drilling gate below still applies.
 3. **Order files** — the MPN/LCSC pass is done for every part SOURCING.md
    verified: `python3 common/bom.py` (from `hardware/`) writes hidden

hardware/SOURCING.md

@@ -72,7 +72,7 @@ Decisions taken this pass (user-approved 2026-07-18):
 | XT60PW-M (Amass) | C98732 | 0.54 | 29k | module power edge + P2 output |
 | XT60PW-F (Amass) | C428722 | 0.56 | 8.4k | backplane, ×8 slots |
 | 2.54 header/socket strips | — | ~0.05 | ≫100k | slot signal rows, UART/SWD |
-| TYPE-C-31-M-12 | C165948 | 0.16 | 336k | manager USB |
+| GCT USB4105-GF-A | C3020560 | 1.30 | 1.1k at JLCPCB | manager USB (J3). 2026-09-28: matches the routed land. LCSC retail shows 0, JLCPCB assembly stock holds it; backup USB4105-GF-A-120 C5184243 (4.7k). The cheaper TYPE-C-31-M-12 C165948 has longer pads and would need the J3 breakout re-routed |
 | EC11E encoder with switch (Alps EC11E18244A5) | C255515 | 2.40 | 766 | 2026-09-27: the old "generic EC11" C2831776 was really a 100 µF/50 V electrolytic; no generic EC11 with switch is listed |
 | YX-SMD8530P SMD buzzer (Yuexin) | C781886 | 0.39 | 368 | 2026-09-27: replaces MLT-8530 C94599, which is rated 2.5–4.5 V but runs from 5V0; same vendor land, pad 1 (+) in the same corner |
 | ATO fuse holder | C3207132 | 0.42 | 997 | module 35 A |

hardware/common/lcsc_parts.py

@@ -99,9 +99,12 @@
     ({P2: ["J1", "J4"]}, "C98732", "XT60PW-M", "Amass", 0.54, ""),
     ({BP: ["J10", "J11", "J12", "J13", "J14", "J15", "J16", "J17"]},
      "C428722", "XT60PW-F", "Amass", 0.56, ""),
-    ({MGR: ["J3"]}, "C165948", "TYPE-C-31-M-12", "Korean Hroparts", 0.16,
-     "CHECK: footprint is GCT USB4105 - swap to the TYPE-C-31-M-12 land "
-     "before ordering, or order a USB4105"),
+    # 2026-09-28: the board is routed to the USB4105 land, so order that part.
+    # LCSC shows 0 stock but JLCPCB assembly holds 1.1k; -120 (C5184243, 4.7k,
+    # longer shell stakes) is the backup. TYPE-C-31-M-12 needs a re-route.
+    ({MGR: ["J3"]}, "C3020560", "USB4105-GF-A", "Global Connector Technology",
+     1.30, "stocked at JLCPCB assembly, not LCSC retail; backup "
+     "USB4105-GF-A-120 C5184243"),
     # C2831776 (the old "generic EC11") is a 100 uF/50 V electrolytic, and
     # the MLT-8530 is rated 2.5-4.5 V but hangs off 5V0 - replaced 2026-09-27.
     ({MGR: ["ENC1"]}, "C255515", "EC11E18244A5", "Alps Alpine", 2.40,

hardware/phase3-manager/bom/phase3-manager-bom.csv

@@ -14,7 +14,7 @@ Item,Qty,References,Value,Footprint,LCSC,MPN,Manufacturer,Unit USD,Ext USD,Note
 13,1,ENC1,EC11,Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm,C255515,EC11E18244A5,Alps Alpine,2.4,2.4,EC11E with push switch; EasyEDA land A/B/C + D/E switch + 2 lugs matches the EC11E-Switch footprint
 14,1,F1,2A mini blade,Fuse:Fuse_Blade_Mini_directSolder,C151091,0297002.WXNV,Littelfuse,0.11,0.11,"2 A MINI blade fuse, soldered directly into the land (no holder)"
 15,1,J1,BACKPLANE,Connector_PinHeader_2.54mm:PinHeader_1x20_P2.54mm_Vertical,,,,,,
-16,1,J3,USB-C,Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal,C165948,TYPE-C-31-M-12,Korean Hroparts,0.16,0.16,"CHECK: footprint is GCT USB4105 - swap to the TYPE-C-31-M-12 land before ordering, or order a USB4105"
+16,1,J3,USB-C,Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal,C3020560,USB4105-GF-A,Global Connector Technology,1.3,1.3,"stocked at JLCPCB assembly, not LCSC retail; backup USB4105-GF-A-120 C5184243"
 17,1,J4,UART,Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical,,,,,,
 18,1,J5,PANEL KEYS,Connector_PinHeader_2.54mm:PinHeader_1x09_P2.54mm_Vertical,,,,,,
 19,1,J6,ILI9341 LCD MODULE,Connector_PinHeader_2.54mm:PinHeader_1x14_P2.54mm_Vertical,,,,,,"ILI9341+XPT2046 2.8in module plugs here - AliExpress, confirm 3V3-VCC jumper"
@@ -36,4 +36,4 @@ Item,Qty,References,Value,Footprint,LCSC,MPN,Manufacturer,Unit USD,Ext USD,Note
 35,1,U11,TCAN1042HGV,Package_SO:SOIC-8_3.9x4.9mm_P1.27mm,C485806,TCAN1042VDRQ1,TI,0.57,0.57,"symbol value says TCAN1042HGV; SOURCING picked the V (VIO) variant, same SOIC-8 pinout"
 36,1,U12,TPD2E001,Package_TO_SOT_SMD:Texas_R-PDSO-N5_DRL-5,C150526,TPD2E001DRLR,TI,0.16,0.16,
 37,1,U13,TCA9535PWR,Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm,C130204,TCA9535PWR,TI,0.44,0.44,UMW clone acceptable here
-,80,,,,,,,,11.36,"10/80 placements have an LCSC number; total covers those only (qty-1, SOURCING.md 2026-07-18)"
+,80,,,,,,,,12.5,"10/80 placements have an LCSC number; total covers those only (qty-1, SOURCING.md 2026-07-18)"

hardware/phase3-manager/bom/phase3-manager-jlcpcb.csv

@@ -14,7 +14,7 @@ LED_CAN,D8,LED_0603_1608Metric,
 EC11,ENC1,RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm,C255515
 2A mini blade,F1,Fuse_Blade_Mini_directSolder,C151091
 BACKPLANE,J1,PinHeader_1x20_P2.54mm_Vertical,
-USB-C,J3,USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal,C165948
+USB-C,J3,USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal,C3020560
 UART,J4,PinHeader_1x03_P2.54mm_Vertical,
 PANEL KEYS,J5,PinHeader_1x09_P2.54mm_Vertical,
 ILI9341 LCD MODULE,J6,PinHeader_1x14_P2.54mm_Vertical,

hardware/phase3-manager/mcu.kicad_sch

@@ -1085,9 +1085,9 @@
     (property "Value" "USB-C" (at 208.28 72.39 0) (effects (font (size 1.27 1.27)) (justify left)))
     (property "Footprint" "Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
     (property "Datasheet" "~" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
-    (property "LCSC" "C165948" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
-    (property "MPN" "TYPE-C-31-M-12" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
-    (property "Manufacturer" "Korean Hroparts" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
+    (property "LCSC" "C3020560" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
+    (property "MPN" "USB4105-GF-A" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
+    (property "Manufacturer" "Global Connector Technology" (at 190.5 96.52 0) (effects (font (size 1.27 1.27)) hide))
     (pin "A1" (uuid 5fb886f1-5761-4f68-82e0-671fc5b94702))
     (pin "A10" (uuid 2b3af121-85a3-4371-8bc4-7c8ef593d5d2))
     (pin "A11" (uuid 6e3846f4-dbcc-4f7c-8ec9-c829c2cd5cf6))

hardware/phase3-manager/tools/route_critical.py

@@ -22,8 +22,8 @@
   B7-A7 with a U under it. 0.25 mm / 0.2 mm gap. Controlled 90-ohm
   impedance is not achievable on 1.6 mm two-layer stock and is not needed
   at full speed; the pair is kept coupled and matched instead. The J3 end
-  is tied to the USB4105 land pattern, and the USB-C part is still an open
-  choice: redraw it if the footprint changes.
+  is tied to the USB4105 land pattern (J3 = GCT USB4105-GF-A): redraw it
+  if the footprint changes.
 
   CAN (500 kbit/s): J1 pins 7/8 -> U11 pins 7/6, up the clear x~9 channel.
   U11 is turned 180 in gen_board.py so its bus pins face J1. The two nets