AMS1117A-3.3V

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  "type": "component",
  "slug": "ams1117a-3-3v",
  "title": "AMS1117A-3.3V",
  "brief": "HX hengjiaxing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "mpn": "AMS1117A-3.3V",
    "manufacturer": "HX hengjiaxing",
    "package": "SOT-223-3",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2204081230_HX-hengjiaxing-AMS1117A-3-3V_C2984862.pdf",
    "parts": {
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      "model_3d_step_plain": "ams1117a-3-3v.step",
      "lbr": "ams1117a-3-3v.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground / common return for the regulator. On the fixed-output AMS1117A-3.3V this pin is the device ground reference (labeled 'Vss/ADJ' on the package; the ADJ function applies only to the -ADJ variant)."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 3.3V output (3.234-3.366V, ±2%) capable of sourcing up to 1A continuous (1.4A max). Requires a 10µF output capacitor for stability."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Unregulated input supply. Recommended operating input up to 15V (absolute max 18V); requires ≥4.8V to maintain 3.3V regulation at load (dropout 1.3V typ at 1A). Bypass with a 10µF tantalum capacitor to GND."
      }
    ],
    "provenance": {
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        "pages": 9,
        "sha256": "cd3d5a1ea037be22",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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      "footprint": "viewers/footprint.html"
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          7.0,
          6.5,
          1.7
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-07",
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        "role": "eda",
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "465e151e5d41e8fa42096003abf2ffb474123336fe34f9b2f2dd4999262025c8",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HX hengjiaxing",
      "Package": "SOT-223-3",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "variants": [
    {
      "mpn": "AMS1117A-3.3VL",
      "kind": "packaging"
    },
    {
      "mpn": "AMS1117A-3.3V33L",
      "kind": "packaging"
    },
    {
      "mpn": "AMS1117A-3.3VO",
      "kind": "packaging"
    },
    {
      "mpn": "AMS1117A-3.3V33O",
      "kind": "packaging"
    }
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  "sections": [
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  "discovery_pitch": "AMS1117A-3.3V (HX hengjiaxing) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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  "visibility": {
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  "updated_at": "2026-09-24T16:23:06.957Z"
}