# Placement rules (derived)

| type | constraint | weight | why |
|---|---|---|---|
| fixed | J2 |  | connector (mechanical interface) |
| fixed | J1 |  | connector (mechanical interface) |
| near | C3.1 ≤ 2.5 mm from U2.5 | 12.0 | U2 output cap 10uF at VOUT (regulator stability) |
| near | C6.1 ≤ 1.5 mm from U1.4 | 10.0 | decoupling U1 V3 (+3V3), 100nF |
| near | C5.1 ≤ 1.5 mm from U1.16 | 10.0 | decoupling U1 VCC (+3V3), 100nF |
| near | C2.1 ≤ 2.5 mm from U2.1 | 10.0 | decoupling U2 VIN (+5V), 1uF |
| near | C1.1 ≤ 3.0 mm from F1.2 | 4.0 | F1 filter bulk cap 10uF at the bead output |
| near | F1.2 ≤ 3.0 mm from C2.1 | 2.0 | filter F1 feeds its cap C2 |