Smart Relay Design Requirements


Assuming you mean LCSC: No, not all components are currently available/assigned from LCSC.
LCSC-available in current BOM
  • KF128-5.08-2P-AA terminals — LCSC stock shown
  • LMR16030SDDAR buck regulator — LCSC stock shown
  • ESP32-S3-WROOM-1U-N16R8 — LCSC stock shown
  • AP2112K-3.3TRG1 — LCSC stock shown
  • TPS2051CDBVR — LCSC stock shown, but wrong for requirement because it is 0.5 A class and USB host target is 1 A
  • STTH212S diode — LCSC stock shown
  • SMBJ30CA TVS — LCSC part metadata present
Not confirmed / not LCSC-ready
  • ISO6741 digital isolator — no LCSC SKU/stock shown
  • ISO1212 isolated DI receivers — no LCSC SKU/stock shown
  • ISOW1044 isolated CAN transceiver — no LCSC SKU/stock shown
  • AD7329 ADC — no LCSC SKU/stock shown
  • JQC-3F-1C-24VDC relay — no LCSC SKU/stock shown
  • USB4105-GF-A USB-C connector — LCSC stock shown as 0
  • ULN2003A — LCSC stock shown as 0 for current selected part
  • Generic resistors/capacitors/inductor — not assigned to specific LCSC MPNs yet
  • Solenoid FET Driver 3.3V blocks — not production BOM-ready as discrete LCSC parts
So the design is not yet LCSC/JLCPCB procurement-ready. Next step should be a sourcing pass to replace/assign LCSC-stocked MPNs for the unavailable ICs, relay, USB connector, passives, inductor, and 1 A USB power switch.
Run sourcing pass
Fix USB switch
Assign passives
Resolve production risks
Check relay options

U28
U1
J1
U3
U27
U29
DRV1
U1 IO9 - U31 2B
U1 IO11 - U31 4B
U1 IO10 - U31 3B
U31 COMPO - K1 ~
U9 ~ - U31 2C
U10 ~ - U31 3C
U1 IO8 - U31 1B
K1 ~ - U31 1C
U11 ~ - U31 4C
GND
U31

smart relay

smart relay thumbnail