PCB Assembly Challenges

flux

Completed the full no-consign JLCPCB audit. Every BOM component now has an LCSC part number, and unavailable/uncertain passive parts were changed to stocked, same-package, equal-or-better electrical alternatives; no footprint or routing changes were required.
Key confirmed stock included:
  • ESP32 module C701346: ~2,358
  • DRV8873-Q1 C2150479: ~2,381
  • LM5146-Q1 C1850329: ~2,300
  • L2 C2047831: ~446
  • Q1/Q2 C396083: ~1,990
  • F1 C135417: ~825
Checks show no current sourcing/manufacturing or DRC errors. Stock can change before checkout, so JLCPCB’s live BOM matching page remains the final authority.
Updated files:
  • Gerbers ZIP

  • JLCPCB BOM

    CommentDesignatorFootprintJLCPCB Part #LCSC Part #
    35YXF2200MFFC16X31.5C1C88844
    C3225X7R1H106KT000EC2C432929
    CC0603KRX7R7BB224C3C106249
    CL21A226MPQNNNEC10, C6, C7, C8, C9C29277
    TCC0603X5R105M500CTC11, C13, C15, C5C20539427
    CL10B104KB8NNNCC12, C16, C28, C4C1591
    CL10B473KO8NNNCC14, C29C2762284
    GRM31CR72A225KA73LC17, C18, C19, C20, C21C913599
    CC1210MKX7R9BB226C22, C23, C24, C25, C26C914881
    CL10A225KL8NNNCC27C307463
    CL10B472JB8NNNCC30C159797
    TCC0603COG101J500CTC31C344186
    SS510D1, D2, D3, D4SMC_L6.9-W5.9-LS7.9-R-RDC717458
    SMBJ26A-TRD5SMB_L4.6-W3.6-LS5.3-RDC133666
    A30-600F1FUSE-TH_L19.1-W3.0-P10.20-D1.2-S2.0C135417
    B2P-VH(LF)(SN)J1, J2CONN-TH_B2P-VH-LF-SNC160315
    VLS6045EX-6R8ML1C415364
    SPM10065VT-6R8M-DL2IND-SMD_L10.5-W10.0C2047831
    P0603P1N46G12LED1C5123548
    KT-0603RLED2C2286
    SED10070GGQ1, Q2DFN-8_L5.1-W5.7-P1.27-LS6.1-BLC396083
    RC0603FR-07100KLR1, R8C14675
    AC0603FR-0743K2LR2C227902
    RC0603FR-07820RLR5C114638
    SCR0603F68KR7C3016380
    RC0603FR-07215KLR9C22954
    RC0603FR-0710KLR10, R13, R3, R4, R6C98220
    RC0603FR-0724K9LR11C137761
    CRCW0603174KFKEAR12C2076698
    CR0603FA6190GR14C101134
    RC0603FR-078K06LR15C131052
    RC0603FR-071KLR16, R17C21190
    DRV8873HPWPRQ1U1HTSSOP-24_L7.8-W4.4-P0.65-LS6.4-BL-EP5.2C2150479
    74LVC1G04SE-7U2SOT-353_L2.2-W1.4-P0.65-LS2.4-BRC264081
    LMR33630BDDARU3SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-EP2.8-1C544370
    ESP32-WROOM-32UE-N16U4C701346
    LM5146QRGYRQ1U5VQFN-20_L4.5-W3.5-P0.50-BL-EP-1C1850329

  • JLCPCB Pick-and-place

    DesignatorLayerRotationMid XMid Y
    C1Top90-5mm-27.25mm
    C2Bottom0-4mm34mm
    C3Bottom0-12.5mm8mm
    C4Bottom903.5mm34mm
    C5Bottom2700mm34mm
    C6Bottom180-12mm25mm
    C7Bottom180-8mm25mm
    C8Bottom180-4mm25mm
    C9Bottom1800mm25mm
    C10Bottom180-12mm30mm
    C11Bottom270-8mm30mm
    C12Bottom0-4mm30mm
    C13Bottom2705mm8mm
    C14Bottom08mm8mm
    C15Bottom18010.8mm8mm
    C16Bottom9012mm5.5mm
    C17Bottom0-11.4mm-9mm
    C18Bottom0-6.8mm-9mm
    C19Bottom0-2.2mm-9mm
    C20Bottom02.4mm-9mm
    C21Bottom07mm-9mm
    C22Bottom011.2mm-9mm
    C23Bottom0-10.8mm-13mm
    C24Bottom270-7mm-13mm
    C25Bottom90-2mm-13mm
    C26Bottom03mm-13mm
    C27Bottom180-12mm1mm
    C28Bottom0-9mm1mm
    C29Bottom270-5.5mm1mm
    C30Bottom90-2mm1mm
    C31Bottom01.5mm1mm
    D1Top180-9.2mm-14mm
    D2Top180-9.2mm-7mm
    D3Top1802mm-14mm
    D4Top1802mm-7mm
    D5Top909.5mm-26mm
    F1Top1800mm-20mm
    J1Top1809mm-37mm
    J2Top010.07mm36mm
    L1Bottom0-2.2mm15mm
    L2Top0-7mm4mm
    LED1Top0-12.2mm32.2mm
    LED2Top0-5mm32.2mm
    Q1Top09.63mm-0.8mm
    Q2Top010.83mm-8.6mm
    R1Bottom180-11mm6mm
    R2Bottom90-8mm6mm
    R3Bottom900mm30mm
    R4Bottom04mm30mm
    R5Bottom05mm12mm
    R6Bottom1808mm12mm
    R7Bottom011mm12mm
    R8Bottom012mm14mm
    R9Bottom05mm-1mm
    R10Bottom2708mm-1mm
    R11Bottom27011mm-1mm
    R12Bottom0-12.5mm-5mm
    R13Bottom180-9mm-5mm
    R14Bottom0-5.5mm-5mm
    R15Bottom0-2mm-5mm
    R16Top0-8.8mm32.2mm
    R17Top0-1.6mm32.2mm
    U1Top1809.5mm7.5mm
    U2Bottom27011.5mm18mm
    U3Bottom270-10.3mm14.995mm
    U4Top0-3.4mm21.03mm
    U5Top1803mm1.5mm
Validate and prepare order
Run final DRC
Review 5 A copper
Verify JLCPCB files
Explain BOM matching
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    16.4k
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
    1.1M
  • 1070TR
    1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
    jharwinbarrozo
    700.5k

TMCC WiFi DCC 5A Module

TMCC WiFi DCC 5A Module thumbnail
Per-locomotive 18 VAC input module that regenerates a 5 A bipolar DCC output using an ESP32 WiFi module and DRV8873 H-bridge, targeting standard PCB assembly.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$7.88–$9.21

Digi-Key

$0.02

HQonline

$5.12–$5.46

LCSC

$14.35–$14.77

Mouser

$20.51–$22.80

TME

$10.04

Verical

$0.39–$212.32

Controls