Repeating this for a list of changes before routing.
- 7002 size change is a good update, especially not that there are more than 1 per PCB.
- I don’t see anywhere the 2.2uF would be critical, these should go to 4.7uF (changed, but not pushed)
- The DACs specifically spec a 10uF 0805 cap, we could replace the 0402 10uF in the charge pump with one of those and reduce the BOM?
New parts to source:
| Quantity | Part | package | Manuf. |
|---|---|---|---|
| 1 | 74LVC2G14 | SOT-363 | WuXi I-Core ~0.5kuai |
| 1 | LM393BIDSGR | WSON8 2x2mm | TI ~0.6kuai |
| 1 | SMF5.0A | SOD-123F | Little Fuse ~0.5kuai* |
| 2 | PMXB56ENZ | DFN1010 | Nexperia ~0.84kuai |
| 1 | SMF24CA | SOD-123F | Little Fuse ~1.2kuai* |
| 3 | SP3002-04JTG | SOT-363 | Little Fuse ~1.1kuai** |
| 1 | PMEG2020EJ | SOD-323F | Nexperia,115 ~0.6kuai Nexperia ~0.78kuai |
| 1 | PESD12VV1BL | SOD-882D | Nexperia,315 ~0.2kuai |
* There are off brand parts for these TVS diodes, but I believe you’ve tested them and found them unusable.
* * There are off brand parts for this USB TVS, but I know for a fact you tested the alternatives and found them lacking.
CBI 2N7002KT SOT-523-3 has equal or better specs that the CBI MMBT7002K SOT-23 that we currently use.