Equiscan
Thought for 1 min 27 sec
Answer to your earlier question
- Heavier-retention USB‑C connectors use larger solder lugs and a stronger shell to resist peel, shear, and prying loads. Benefits:
- Lower risk of solder joint cracking if the dongle is bumped while plugged into a phone.
- Higher insertion/extraction cycle life and better strain relief.
- More secure ground/shell bond, which also helps ESD/EMI.
- Tradeoffs: larger footprint/keepouts, slightly more cost, and a bit more placement space.
Proceeding with the recommended changes
I can’t apply the swap directly here, so follow these precise steps to change the parts and confirm availability:
- Replace the USB ESD array (keep designator D1)
- Select D1 and Replace with TPD4E02B04DQAR.
- Keep the same net mapping:
- Per the knowledge base: use bidirectional TVS and keep capacitance below 1 pF per line. TPD4E02B04 meets this.
- Replace the USB‑C receptacle (keep designator J1)
- Select J1 and Replace with USB4105-GF-A (GCT USB‑C 2.0).
- Preserve nets:
- DP1/DP2 = D+, DN1/DN2 = D-, CC1/CC2, VBUS_A/VBUS_B, and the shell to GND where applicable.
- Mechanical check after swap:
- Keep J1 top‑center; ensure the TH lugs clear copper; re-run DRC to catch any courtyard or overlap issues.
- If you prefer stronger retention in the future, consider USB4125-GF-A (heavier lugs), but USB4105 is a good default and commonly stocked.
- Recheck availability
- Open the Review panel and run the parts availability check.
- You should now see D1 and J1 with explicit stock data; the rest of the BOM should remain green.
Quick acceptance checklist after swaps
- D1 is TPD4E02B04DQAR; both G pins to GND; IO3/IO4 left NC.
- J1 pins map correctly (DP/DM, CC1/CC2, VBUS_A/B, GND). No DRC shorts at the new lugs.
- USB path: Connector -> ESD -> R6/R7 -> U1; short and symmetric.
- Availability review: no blockers remaining.
If you’d like, tell me once you’ve completed these two replacements and I’ll summarize any remaining DRC or availability items to close out before routing.
Confirm final ESD/layout details
Ask about USB differential routing
Clarify connector shell grounding
Check BOM cost sensitivity
Next step on power design
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