PCB Design Requirements
Thought for 2 mins 18 sec
I inspected the live DRC airwire report and mapped the flagged IDs back to the layout components.
Airwire findings
Table
- The airwire checker reported pads tied to IDs
39ce6c47and21b6c03f. - In the PCB layout, those IDs map to:
- The schematic confirms the only pads on those components are:
Flux’s DRC output is exposing the flagged pad/component IDs, but not the full airwire pair geometry in the review text itself. So I can identify the three unresolved pads confidently, but the review output does not explicitly name the opposite endpoint of each unrouted connection.
So the practical read is:
List all airwires
Show first airwire
Check missing footprints
Thought
nets {
net GND = GND:GND, J4:1, J1:1, J3:1, D1:A, C1:2, C2:P2;
net VIN = C2:P1, J2:1, C1:1, D1:K;
}
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Design Notes
Inline Power Protection PCB
Diagram
Fixed requirements
- Board size: 48 mm x 20 mm
- Corner radius: 3 mm
- Layers: 2
- Bottom layer: continuous GND plane
- Top layer: straight 2.5 mm VIN trunk, no neck-downs
- Components allowed electrically: TVS diode, 0.1 uF ceramic capacitor, 470 uF 35 V radial electrolytic capacitor
- Left-to-right order: INPUT -> TVS -> CERAMIC -> ELECTROLYTIC -> OUTPUT
- Mounting holes: 4 x 3.0 mm NPTH, one per corner, offset 3 mm from edges
- Wire interface: direct-solder through-hole pads sized for 16 AWG equivalent direct wire attachment
- GND via targets: TVS x2, ceramic x1, electrolytic x1 to x2
Implemented updates
- Removed extra legacy electrical content so the schematic now contains exactly the required TVS diode, 0.1 uF ceramic capacitor, and 470 uF electrolytic capacitor plus four direct-solder wire pads and four mounting holes.
- Added four 3.0 mm NPTH corner mounting holes and renamed them MH1 through MH4.
- Normalized the schematic to exactly two nets: VIN and GND.
- Added the fourth turret terminal so the board now has four direct-solder wire pads: J1 input VIN+, J3 input GND, J2 output VOUT+, J4 output GND.
- Locked layout size to 48 mm x 20 mm with 3 mm corner radius and Standard 2 Layer stackup.
- Auto-placement produced a compact inline arrangement with J1 and J3 on the left edge, J2 and J4 on the right edge, D1 then C2 then C1 across the board.
Remaining manual / tool-limited items
- Net-targeted PCB layout rules for VIN and GND could not be directly applied because net selector matching for the layout rule tool was ambiguous in this project state.
- PCB routing remains incomplete: airwires are still present, so the straight 2.5 mm VIN trunk and final GND plane stitching are not yet fully realized.
- Gerber export should wait until routing is complete and the airwires are cleared.
Inline Power Protection PCB
Fixed requirements
Implemented updates
Remaining manual / tool-limited items
