Network cabinet fan controller

{
  "design": "fan-controller",
  "revision": "B-MTA156-development",
  "components": [
    {
      "ref": "J1",
      "sym": "fan_controller:Part_TE_640445_2",
      "value": "12V IN",
      "fp": "fan_controller:TE_MTA156_640445-2_1x02_P3.9624_Vertical",
      "block": "input",
      "mpn": "640445-2",
      "mfr": "TE Connectivity",
      "src": "LCSC C86497",
      "lcsc": "C86497",
      "note": "User requested two-pin MTA-156 power input. Header only; matching wire plug and mated cable fit must be selected."
    },
    {
      "ref": "F1",
      "sym": "fan_controller:Part_0466004_NRHF",
      "value": "4A fast",
      "fp": "fan_controller:Fuse_1206_3216Metric",
      "block": "input",
      "mpn": "0466004.NRHF",
      "mfr": "Littelfuse",
      "src": "LCSC C187596",
      "lcsc": "C187596",
      "note": "Secondary protection; 2 A combined continuous design target; qualify start-up I\u00b2t and source fault current."
    },
    {
      "ref": "Q1",
      "sym": "fan_controller:Part_AO4407A",
      "value": "AO4407A",
      "fp": "fan_controller:SOIC-8_3.9x4.9mm_P1.27mm",
      "block": "input",
      "mpn": "AO4407A",
      "mfr": "Alpha & Omega Semiconductor",
      "src": "LCSC C16072",
      "lcsc": "C16072",
      "note": "Drain toward source connector; body diode starts protected rail; source on protected side."
    },
    {
      "ref": "R1",
      "sym": "fan_controller:Part_0603WAF1003T5E",
      "value": "100k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "input",
      "mpn": "0603WAF1003T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25803",
      "lcsc": "C25803",
      "note": ""
    },
    {
      "ref": "D1",
      "sym": "fan_controller:Part_SMAJ15A_TR13",
      "value": "SMAJ15A",
      "fp": "fan_controller:D_SMA",
      "block": "input",
      "mpn": "SMAJ15A/TR13",
      "mfr": "Brightking",
      "src": "LCSC C86819",
      "lcsc": "C86819",
      "note": "15 V standoff; surge clamp is not fan overvoltage protection."
    },
    {
      "ref": "C1",
      "sym": "fan_controller:Part_EEEFT1E101AP",
      "value": "100u 25V",
      "fp": "fan_controller:CP_Elec_6.3x5.8",
      "block": "input",
      "mpn": "EEEFT1E101AP",
      "mfr": "Panasonic",
      "src": "LCSC C178590",
      "lcsc": "C178590",
      "note": "Bulk input; 6.3 mm diameter, 5.8 mm high, rated 300 mA ripple."
    },
    {
      "ref": "C2",
      "sym": "fan_controller:Part_CL21A106KAYNNNE",
      "value": "10u 25V",
      "fp": "fan_controller:C_0805_2012Metric",
      "block": "power",
      "mpn": "CL21A106KAYNNNE",
      "mfr": "",
      "src": "LCSC C15850",
      "lcsc": "C15850",
      "note": ""
    },
    {
      "ref": "C3",
      "sym": "fan_controller:Part_CC0603KRX7R9BB104",
      "value": "100n",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "power",
      "mpn": "CC0603KRX7R9BB104",
      "mfr": "",
      "src": "LCSC C14663",
      "lcsc": "C14663",
      "note": ""
    },
    {
      "ref": "U1",
      "sym": "fan_controller:Part_AP63203WU_7",
      "value": "AP63203WU-7",
      "fp": "fan_controller:TSOT-23-6",
      "block": "power",
      "mpn": "AP63203WU-7",
      "mfr": "Diodes Incorporated",
      "src": "LCSC C780769",
      "lcsc": "C780769",
      "note": ""
    },
    {
      "ref": "C4",
      "sym": "fan_controller:Part_CC0603KRX7R9BB104",
      "value": "100n",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "power",
      "mpn": "CC0603KRX7R9BB104",
      "mfr": "",
      "src": "LCSC C14663",
      "lcsc": "C14663",
      "note": ""
    },
    {
      "ref": "L1",
      "sym": "fan_controller:Part_CDRH6D38T125NP_3R9NC",
      "value": "3.9uH",
      "fp": "fan_controller:CDRH6D38T125",
      "block": "power",
      "mpn": "CDRH6D38T125NP-3R9NC",
      "mfr": "Sumida",
      "src": "LCSC C2890514",
      "lcsc": "C2890514",
      "note": ""
    },
    {
      "ref": "C5",
      "sym": "fan_controller:Part_CL31A226KOHNNNE",
      "value": "22u 16V",
      "fp": "fan_controller:C_1206_3216Metric",
      "block": "power",
      "mpn": "CL31A226KOHNNNE",
      "mfr": "",
      "src": "LCSC C90146",
      "lcsc": "C90146",
      "note": ""
    },
    {
      "ref": "C6",
      "sym": "fan_controller:Part_CL31A226KOHNNNE",
      "value": "22u 16V",
      "fp": "fan_controller:C_1206_3216Metric",
      "block": "power",
      "mpn": "CL31A226KOHNNNE",
      "mfr": "",
      "src": "LCSC C90146",
      "lcsc": "C90146",
      "note": ""
    },
    {
      "ref": "U2",
      "sym": "fan_controller:Part_ESP32_C3_MINI_1U_N4",
      "value": "ESP32-C3-MINI-1U-N4",
      "fp": "fan_controller:ESP32-C3-MINI-1U",
      "block": "mcu",
      "mpn": "ESP32-C3-MINI-1U-N4",
      "mfr": "Espressif",
      "src": "LCSC C2911374",
      "lcsc": "C2911374",
      "note": "N4 is NRND; N4X not in current stocked search. External antenna required; existing silicon supported for this prototype."
    },
    {
      "ref": "C7",
      "sym": "fan_controller:Part_CL21A106KAYNNNE",
      "value": "10u 25V",
      "fp": "fan_controller:C_0805_2012Metric",
      "block": "mcu",
      "mpn": "CL21A106KAYNNNE",
      "mfr": "",
      "src": "LCSC C15850",
      "lcsc": "C15850",
      "note": ""
    },
    {
      "ref": "C8",
      "sym": "fan_controller:Part_CC0603KRX7R9BB104",
      "value": "100n",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "mcu",
      "mpn": "CC0603KRX7R9BB104",
      "mfr": "",
      "src": "LCSC C14663",
      "lcsc": "C14663",
      "note": ""
    },
    {
      "ref": "R2",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "mcu",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "C9",
      "sym": "fan_controller:Part_CL10A105KB8NNNC",
      "value": "1u",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "mcu",
      "mpn": "CL10A105KB8NNNC",
      "mfr": "Samsung",
      "src": "LCSC C15849",
      "lcsc": "C15849",
      "note": ""
    },
    {
      "ref": "R3",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "mcu",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "R4",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "mcu",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "R5",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "mcu",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "U3",
      "sym": "fan_controller:Part_SN74LVC2G125DCTR",
      "value": "SN74LVC2G125DCTR",
      "fp": "fan_controller:TI_DCT0008A",
      "block": "fans",
      "mpn": "SN74LVC2G125DCTR",
      "mfr": "Texas Instruments",
      "src": "LCSC C206035",
      "lcsc": "C206035",
      "note": "DCT8 uses TI SM8; matched to SSOP-8 2.95x2.8 mm, 0.65 mm pitch."
    },
    {
      "ref": "C10",
      "sym": "fan_controller:Part_CC0603KRX7R9BB104",
      "value": "100n",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "fans",
      "mpn": "CC0603KRX7R9BB104",
      "mfr": "",
      "src": "LCSC C14663",
      "lcsc": "C14663",
      "note": ""
    },
    {
      "ref": "R6",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "R7",
      "sym": "fan_controller:Part_0603WAF4702T5E",
      "value": "47k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF4702T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25819",
      "lcsc": "C25819",
      "note": ""
    },
    {
      "ref": "R8",
      "sym": "fan_controller:Part_0603WAF4702T5E",
      "value": "47k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF4702T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25819",
      "lcsc": "C25819",
      "note": ""
    },
    {
      "ref": "R9",
      "sym": "fan_controller:Part_0603WAF330JT5E",
      "value": "33",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF330JT5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C23140",
      "lcsc": "C23140",
      "note": ""
    },
    {
      "ref": "R10",
      "sym": "fan_controller:Part_0603WAF330JT5E",
      "value": "33",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF330JT5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C23140",
      "lcsc": "C23140",
      "note": ""
    },
    {
      "ref": "J2",
      "sym": "fan_controller:Part_47053_1000",
      "value": "FAN1",
      "fp": "fan_controller:FanPinHeader_1x04_P2.54mm_Vertical",
      "block": "fans",
      "mpn": "47053-1000",
      "mfr": "Molex",
      "src": "LCSC C240840",
      "lcsc": "C240840",
      "note": "Vertical mated height and cable bend require fit review."
    },
    {
      "ref": "R11",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "R12",
      "sym": "fan_controller:Part_0603WAF1001T5E",
      "value": "1k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF1001T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C21190",
      "lcsc": "C21190",
      "note": ""
    },
    {
      "ref": "C11",
      "sym": "fan_controller:Part_CL10B102KB8NNNC",
      "value": "1n",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "fans",
      "mpn": "CL10B102KB8NNNC",
      "mfr": "Samsung",
      "src": "LCSC C1588",
      "lcsc": "C1588",
      "note": ""
    },
    {
      "ref": "J3",
      "sym": "fan_controller:Part_47053_1000",
      "value": "FAN2",
      "fp": "fan_controller:FanPinHeader_1x04_P2.54mm_Vertical",
      "block": "fans",
      "mpn": "47053-1000",
      "mfr": "Molex",
      "src": "LCSC C240840",
      "lcsc": "C240840",
      "note": "Vertical mated height and cable bend require fit review."
    },
    {
      "ref": "R13",
      "sym": "fan_controller:Part_0603WAF1002T5E",
      "value": "10k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF1002T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C25804",
      "lcsc": "C25804",
      "note": ""
    },
    {
      "ref": "R14",
      "sym": "fan_controller:Part_0603WAF1001T5E",
      "value": "1k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "fans",
      "mpn": "0603WAF1001T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C21190",
      "lcsc": "C21190",
      "note": ""
    },
    {
      "ref": "C12",
      "sym": "fan_controller:Part_CL10B102KB8NNNC",
      "value": "1n",
      "fp": "fan_controller:C_0603_1608Metric",
      "block": "fans",
      "mpn": "CL10B102KB8NNNC",
      "mfr": "Samsung",
      "src": "LCSC C1588",
      "lcsc": "C1588",
      "note": ""
    },
    {
      "ref": "J4",
      "sym": "fan_controller:Part_B3B_XH_A_LF__SN_",
      "value": "DS18B20 SENSOR",
      "fp": "fan_controller:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical",
      "block": "sensor",
      "mpn": "B3B-XH-A(LF)(SN)",
      "mfr": "JST",
      "src": "LCSC C144394",
      "lcsc": "C144394",
      "note": "Powered 3-wire DS18B20; cable shield if needed to GND at board only; remote 100 nF at sensor."
    },
    {
      "ref": "R15",
      "sym": "fan_controller:Part_0603WAF4701T5E",
      "value": "4.7k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "sensor",
      "mpn": "0603WAF4701T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C23162",
      "lcsc": "C23162",
      "note": ""
    },
    {
      "ref": "J5",
      "sym": "Connector_Generic:Conn_02x03_Odd_Even",
      "value": "3V3 UART PROGRAM",
      "fp": "fan_controller:PinHeader_2x03_P2.54mm_Vertical",
      "block": "program",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Unpopulated service holes: use 3.3 V UART. Pin 2 is voltage sense only while 12 V is connected. Pull BOOT low then pulse EN low for download."
    },
    {
      "ref": "R16",
      "sym": "fan_controller:Part_0603WAF2201T5E",
      "value": "2.2k",
      "fp": "fan_controller:R_0603_1608Metric",
      "block": "indicator",
      "mpn": "0603WAF2201T5E",
      "mfr": "UNI-ROYAL",
      "src": "LCSC C4190",
      "lcsc": "C4190",
      "note": ""
    },
    {
      "ref": "D2",
      "sym": "fan_controller:Part_KT_0603R",
      "value": "STATUS red",
      "fp": "fan_controller:LED_0603_1608Metric",
      "block": "indicator",
      "mpn": "KT-0603R",
      "mfr": "Hubei KENTO",
      "src": "LCSC C2286",
      "lcsc": "C2286",
      "note": "Red LED; operating current about 0.6 mA."
    },
    {
      "ref": "TP1",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "VIN_RAW",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP2",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "VIN12",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP3",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "V3V3",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP4",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "SW",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP5",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "PWM1",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP6",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "PWM2",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP7",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "TACH1",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP8",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "TACH2",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP9",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "ONEWIRE",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP10",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "EN",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP11",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "PWM_DISABLE",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "TP12",
      "sym": "Connector_Generic:Conn_01x01",
      "value": "GND",
      "fp": "fan_controller:TestPoint_Pad_D1.0mm",
      "block": "probe",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Exposed copper only, no purchased component."
    },
    {
      "ref": "#FLG001",
      "sym": "power:PWR_FLAG",
      "value": "PWR_FLAG",
      "fp": "",
      "block": "flags",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": ""
    },
    {
      "ref": "#FLG002",
      "sym": "power:PWR_FLAG",
      "value": "PWR_FLAG",
      "fp": "",
      "block": "flags",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": ""
    },
    {
      "ref": "#FLG003",
      "sym": "power:PWR_FLAG",
      "value": "PWR_FLAG",
      "fp": "",
      "block": "flags",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": ""
    },
    {
      "ref": "#FLG004",
      "sym": "power:PWR_FLAG",
      "value": "PWR_FLAG",
      "fp": "",
      "block": "flags",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": ""
    },
    {
      "ref": "H1",
      "sym": "fan_controller:MountingHole",
      "value": "M2 / 2.2mm NPTH",
      "fp": "MountingHole_2.2mm_M2",
      "block": "mechanical",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Mechanical NPTH; no electrical pins or purchased BOM item."
    },
    {
      "ref": "H2",
      "sym": "fan_controller:MountingHole",
      "value": "M2 / 2.2mm NPTH",
      "fp": "MountingHole_2.2mm_M2",
      "block": "mechanical",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Mechanical NPTH; no electrical pins or purchased BOM item."
    },
    {
      "ref": "H3",
      "sym": "fan_controller:MountingHole",
      "value": "M2 / 2.2mm NPTH",
      "fp": "MountingHole_2.2mm_M2",
      "block": "mechanical",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Mechanical NPTH; no electrical pins or purchased BOM item."
    },
    {
      "ref": "H4",
      "sym": "fan_controller:MountingHole",
      "value": "M2 / 2.2mm NPTH",
      "fp": "MountingHole_2.2mm_M2",
      "block": "mechanical",
      "mpn": "",
      "mfr": "",
      "src": "",
      "lcsc": "",
      "note": "Mechanical NPTH; no electrical pins or purchased BOM item."
    }
  ],
  "nets": {
    "VIN_RAW": [
      "J1.1",
      "F1.1",
      "TP1.1",
      "#FLG001.1"
    ],
    "GND": [
      "J1.2",
      "R1.2",
      "D1.2",
      "C1.2",
      "C2.2",
      "C3.2",
      "U1.4",
      "C5.2",
      "C6.2",
      "U2.1",
      "U2.2",
      "U2.11",
      "U2.14",
      "U2.36",
      "U2.37",
      "U2.38",
      "U2.39",
      "U2.40",
      "U2.41",
      "U2.42",
      "U2.43",
      "U2.44",
      "U2.45",
      "U2.46",
      "U2.47",
      "U2.48",
      "U2.49",
      "U2.50",
      "U2.51",
      "U2.52",
      "U2.53",
      "C7.2",
      "C8.2",
      "C9.2",
      "U3.4",
      "C10.2",
      "J2.1",
      "C11.2",
      "J3.1",
      "C12.2",
      "J4.1",
      "J5.1",
      "D2.1",
      "TP12.1",
      "#FLG004.1"
    ],
    "VIN_FUSED": [
      "F1.2",
      "Q1.5",
      "Q1.6",
      "Q1.7",
      "Q1.8"
    ],
    "VIN12": [
      "Q1.1",
      "Q1.2",
      "Q1.3",
      "D1.1",
      "C1.1",
      "C2.1",
      "C3.1",
      "U1.2",
      "U1.3",
      "J2.2",
      "J3.2",
      "TP2.1",
      "#FLG002.1"
    ],
    "RP_GATE": [
      "Q1.4",
      "R1.1"
    ],
    "V3V3": [
      "U1.1",
      "L1.2",
      "C5.1",
      "C6.1",
      "U2.3",
      "C7.1",
      "C8.1",
      "R2.1",
      "R3.1",
      "R4.1",
      "R5.1",
      "U3.8",
      "C10.1",
      "R6.1",
      "R7.1",
      "R8.1",
      "R11.1",
      "R13.1",
      "J4.3",
      "R15.1",
      "J5.2",
      "TP3.1",
      "#FLG003.1"
    ],
    "SW": [
      "U1.5",
      "C4.2",
      "L1.1",
      "TP4.1"
    ],
    "BST": [
      "U1.6",
      "C4.1"
    ],
    "STRAP2": [
      "U2.5",
      "R3.2"
    ],
    "EN": [
      "U2.8",
      "R2.2",
      "C9.1",
      "J5.5",
      "TP10.1"
    ],
    "PWM1_MCU": [
      "U2.12",
      "U3.2",
      "R7.2"
    ],
    "PWM2_MCU": [
      "U2.13",
      "U3.5",
      "R8.2"
    ],
    "STATUS": [
      "U2.16",
      "R16.1"
    ],
    "TACH1_MCU": [
      "U2.18",
      "R12.2",
      "C11.1"
    ],
    "TACH2_MCU": [
      "U2.19",
      "R14.2",
      "C12.1"
    ],
    "ONEWIRE": [
      "U2.20",
      "J4.2",
      "R15.2",
      "TP9.1"
    ],
    "PWM_DISABLE": [
      "U2.21",
      "U3.1",
      "U3.7",
      "R6.2",
      "TP11.1"
    ],
    "STRAP8": [
      "U2.22",
      "R4.2"
    ],
    "BOOT": [
      "U2.23",
      "R5.2",
      "J5.6"
    ],
    "UART_RX": [
      "U2.30",
      "J5.4"
    ],
    "UART_TX": [
      "U2.31",
      "J5.3"
    ],
    "PWM2_DRV": [
      "U3.3",
      "R10.1"
    ],
    "PWM1_DRV": [
      "U3.6",
      "R9.1"
    ],
    "PWM1": [
      "R9.2",
      "J2.4",
      "TP5.1"
    ],
    "PWM2": [
      "R10.2",
      "J3.4",
      "TP6.1"
    ],
    "TACH1": [
      "J2.3",
      "R11.2",
      "R12.1",
      "TP7.1"
    ],
    "TACH2": [
      "J3.3",
      "R13.2",
      "R14.1",
      "TP8.1"
    ],
    "LED_A": [
      "R16.2",
      "D2.2"
    ]
  },
  "noConnect": {
    "U2": [
      "4",
      "6",
      "7",
      "9",
      "10",
      "15",
      "17",
      "24",
      "25",
      "26",
      "27",
      "28",
      "29",
      "32",
      "33",
      "34",
      "35"
    ]
  },
  "board": {
    "width_mm": 44.5,
    "height_mm": 44.5,
    "corner_radius_mm": 6.5,
    "thickness_mm": 1.6,
    "layers": 2
  },
  "loadAssumptions": {
    "VIN12_V": [
      11.4,
      12.6
    ],
    "combined_continuous_fan_A": 2.0,
    "each_fan_continuous_A": 1.0,
    "regulator_output_A": 0.6,
    "ambient_C": 40,
    "qualification": "Self-set prototype envelope; actual fans, supply tolerance and start current still require confirmation."
  }
}