CJ432 ±1%

{
  "schema_version": 1,
  "type": "component",
  "slug": "cj432-1",
  "title": "CJ432 ±1%",
  "brief": "Jiangsu Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cj432 ±1%"
  ],
  "component": {
    "mpn": "CJ432 ±1%",
    "manufacturer": "Jiangsu",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4baf9193a4074d38b4c039d5773109a2.pdf",
    "parts": {
      "symbol": "cj432-1.kicad_sym",
      "footprint": "cj432-1.kicad_mod",
      "model_3d": "cj432-1-etched.glb",
      "model_3d_plain": "cj432-1.glb",
      "model_3d_step": "cj432-1-etched.step",
      "model_3d_step_plain": "cj432-1.step",
      "lbr": "cj432-1.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "REF",
        "type": "input",
        "description": "Reference input. Compared internally to the 1.24V bandgap reference; when REF rises above Vref (~1.2400V, min 1.2214V / max 1.2586V at Ta=25°C) the device sinks current from cathode to anode. Reference input current is typically <1µA."
      },
      {
        "number": "2",
        "name": "CATHODE",
        "type": "passive",
        "description": "Cathode (K). Shunt regulator output; sinks 0.1mA to 100mA in the on state. Maximum cathode voltage 18V; off-state leakage ~0.5µA at VKA=15V, VREF=0. Dynamic impedance ~0.5Ω at f≤1kHz."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "passive",
        "description": "Anode (A). Return terminal for the shunt current path; typically tied to circuit ground (or to the low side of the feedback divider in an adjustable-regulator configuration)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/4baf9193a4074d38b4c039d5773109a2.pdf",
        "pages": 4,
        "sha256": "4298a1522dab0f25",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -0.9375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "cj432-1.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cj432-1-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9b7a841202b801c2d71bbb6fab99f77c704382cea81380895272de9aa5aa60bd",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Jiangsu",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4298a1522dab0f25",
      "rows": [
        {
          "name": "Reference input voltage, 1% rank (classification range)",
          "symbol": "Vref",
          "kind": "tolerance",
          "unit": "V",
          "min": 1.2276,
          "typ": null,
          "max": 1.2524,
          "conditions": "VKA=VREF, IKA=10mA",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Deviation of reference voltage over full temperature range",
          "symbol": "△Vref(DEV)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 16,
          "conditions": "VKA =VREF, IKA =10mA, 0℃≤Ta≤70℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Ratio of change in reference input voltage to change in cathode voltage",
          "symbol": "△Vref / V △ KA",
          "kind": "electrical",
          "unit": "mV/V",
          "min": null,
          "typ": null,
          "max": 2.4,
          "conditions": "IKA=10mA, V△KA=1.25V~15V",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Deviation of reference input current over full temperature range",
          "symbol": "△lref / T △",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "lKA=10mA, R1=10kΩ, R2=∞, 0℃≤Ta≤70℃",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Minimum cathode current for regulation",
          "symbol": "IKA(min)",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "VKA=VREF",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Off-state cathode current",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VKA=15V,VREF=0",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "ZKA",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": null,
          "max": 0.5,
          "conditions": "VKA=VREF, lKA=0.1 ~20mA, f≤1.0kHz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage",
          "symbol": "VKA",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Cathode current range (continuous)",
          "symbol": "IKA",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "continuous",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Reference input current range",
          "symbol": "Iref",
          "kind": "absolute_maximum",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
          "min": null,
          "typ": null,
          "max": 350,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance from junction to ambient",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": null,
          "max": 357,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "Topr",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": 0,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cj432 ±1%"
  ],
  "discovery_pitch": "CJ432 ±1% (Jiangsu) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cj432-1.kicad_sym",
    "cj432-1.kicad_mod",
    "cj432-1.glb",
    "cj432-1.step",
    "cj432-1-etched.step",
    "cj432-1.lbr",
    "docs/hero.png",
    "docs/cj432-1-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T19:06:09.997Z"
}