{
  "id": "aht21",
  "name": "AHT21 Humidity and Temperature Sensor",
  "category": "sensor",
  "family": "AHT2x",
  "manufacturer": "Aosong (ASAIR)",
  "mpn_pattern": "AHT21",
  "description": "ASAIR AHT21 calibrated digital humidity and temperature sensor, I2C (address 0x38), SMD LGA-6 package 3x3x0.8mm. Land pattern per manufacturer datasheet (identical to AHT20; 0.2mm lower body).",
  "parameters": {
    "contacts": 6,
    "mounting": "SMD",
    "interface": "I2C",
    "i2c_address": "0x38",
    "supply_voltage": "2.2-5.5V",
    "body_mm": "3.0x3.0x0.8"
  },
  "formats": [
    "kicad_mod",
    "kicad_sym",
    "step",
    "glb"
  ],
  "files": {
    "footprint": "https://partreel.com/library/sensor/asair/aht21/aht21/aht21.kicad_mod",
    "symbol": "https://partreel.com/library/sensor/asair/aht21/aht21/aht21.kicad_sym",
    "model_3d": "https://assets.partreel.com/library/sensor/asair/aht21/aht21/aht21.step",
    "preview": "https://assets.partreel.com/library/sensor/asair/aht21/aht21/aht21.glb",
    "footprint_svg": "https://partreel.com/library/sensor/asair/aht21/aht21/aht21.footprint.svg",
    "symbol_svg": "https://partreel.com/library/sensor/asair/aht21/aht21/aht21.symbol.svg"
  },
  "datasheet": "https://asairsensors.com/wp-content/uploads/2021/09/Data-Sheet-AHT21-Humidity-and-Temperature-Sensor-ASAIR-V1.0.03.pdf",
  "license": "CC-BY-4.0",
  "verified": true,
  "tier": null,
  "dimensions_source": "ASAIR AHT21 datasheet V1.0 (May 2021): Fig.1 package 3x3x0.8mm with 1.0mm square sensor window, Fig.8 recommended land pattern (6 pads 0.8x0.5, col spacing 2.0, row pitch 1.0), Table 5 pinout.",
  "keywords": [
    "aht21",
    "asair",
    "aosong",
    "humidity",
    "temperature",
    "sensor",
    "i2c",
    "lga",
    "3x3mm"
  ],
  "field_reports": {
    "worked": 0,
    "problem": 0
  },
  "provenance": {
    "dimensions_source": "ASAIR AHT21 datasheet V1.0 (May 2021): Fig.1 package 3x3x0.8mm with 1.0mm square sensor window, Fig.8 recommended land pattern (6 pads 0.8x0.5, col spacing 2.0, row pitch 1.0), Table 5 pinout.",
    "datasheet": "https://asairsensors.com/wp-content/uploads/2021/09/Data-Sheet-AHT21-Humidity-and-Temperature-Sensor-ASAIR-V1.0.03.pdf",
    "generator_source": "https://github.com/mingyo186/partreel/blob/main/generators/gen_parts.py",
    "quality_gates": {
      "gates": [
        "validate_kicad (structure/pads/layers)",
        "KLC drawing rules (silk/fab/courtyard/pin1)",
        "check_overlap (text collisions)",
        "check_render (files/SVG-vs-source/meta completeness)",
        "check_zfight (3D coplanar faces, merged pins)",
        "validate_step (FreeCAD kernel isValid)"
      ],
      "enforcement": "CI runs all gates on every push and blocks deployment on any failure",
      "ci_config": "https://github.com/mingyo186/partreel/blob/main/.github/workflows/deploy.yml"
    },
    "field_reports": {
      "worked": 0,
      "problem": 0
    }
  },
  "page": "https://partreel.com/p/aht21/",
  "api": "https://partreel.com/api/v1/parts/aht21.json"
}