UA7805

{
  "schema_version": 1,
  "type": "component",
  "slug": "ua7805",
  "title": "UA7805",
  "brief": "TI fixed 5 V, 1.5 A positive linear regulator, TO-220. Internal thermal + short-circuit protection. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "voltage-regulator",
    "linear-regulator",
    "7805",
    "5v",
    "to-220",
    "texas-instruments"
  ],
  "component": {
    "mpn": "UA7805",
    "manufacturer": "Texas Instruments",
    "package": "TO-220",
    "pin_count": 3,
    "category": "Power Management",
    "subcategory": "Fixed 5 V linear regulator (78xx)",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm340.pdf",
    "parts": {
      "symbol": "ua7805.kicad_sym",
      "footprint": "ua7805.kicad_mod",
      "model_3d": "ua7805-etched.glb",
      "model_3d_plain": "ua7805.glb",
      "lbr": "ua7805.lbr",
      "model_3d_step": "ua7805-etched.step",
      "model_3d_step_plain": "ua7805.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "INPUT",
        "type": "power_in",
        "description": "Unregulated positive input voltage. Recommended 7.5 V to 20 V (35 V absolute max) for a 5-V output; requires ≥7.5 V to maintain line regulation. A 0.22-µF (or larger) ceramic bypass capacitor to GND is required when the regulator is far from the supply filter."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for both input and output. Also serves as the thermal reference; on TO-220/TO-263/SOT-223 the exposed tab/pad is electrically connected to this pin and should be tied to the ground plane for heat sinking."
      },
      {
        "number": "3",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "Regulated +5-V output (4.8 V to 5.2 V typical over line/load; 4.75 V to 5.25 V worst case). Delivers up to 1.5 A with adequate heat sinking; internally current-limited to ~2.1 A short-circuit. A 0.1-µF ceramic output capacitor to GND improves transient response but is not required for stability."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm340.pdf",
        "pages": 37,
        "sha256": "ce0caf2298560e42",
        "source_tier": "mfr"
      },
      "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"
    },
    "models_3d": [
      {
        "file": "ua7805.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "7cb065d935df5771f0ba6e48ddd180863a121af76483dad7f18e667a7b68204a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ua7805-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          10.25,
          4.455,
          28.525
        ],
        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
        "sha256": "8d08cf474779bd20abb299a6b342c1ec8b192d9a0084f3c1a9dbea8c85b8615a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Fixed positive linear regulator",
      "Output voltage": "5 V fixed",
      "Output current": "up to 1.5 A",
      "Input voltage": "7-35 V",
      "Dropout": "~2 V (not LDO)",
      "Protection": "Current limit + SOA + thermal shutdown",
      "Line regulation": "typ. 4 mV",
      "Package": "TO-220 (3-lead)"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ua7805",
    "7805",
    "lm7805",
    "5v regulator",
    "fixed linear regulator"
  ],
  "discovery_pitch": "UA7805 fixed 5 V 1.5 A positive linear regulator (TO-220) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ua7805.kicad_sym",
    "ua7805.kicad_mod",
    "ua7805.glb",
    "ua7805.lbr",
    "docs/hero.png",
    "docs/ua7805-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ua7805-etched.step"
  ],
  "variants": [
    {
      "mpn": "UA7805CKC (TO-220)",
      "kind": "packaging"
    },
    {
      "mpn": "UA7805CKCS (TO-220, short shipping)",
      "kind": "packaging"
    }
  ]
}