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Ray page.json: fold the "TAB" entry into pin 2. On TO-252-2 the tab is not a separate pad - it is that lead - so nothing wa… dfc0101
{
 "schema": "adom.pads/1",
 "slug": "lm78m12cdt",
 "footprint": "TO-252-2",
 "generated_from": {
  "footprint": "TO-252-2@sha256:18c28e5e147d5e9b",
  "pins": "page.json:component.pins",
  "overrides": null
 },
 "pin1": {
  "pad": "1",
  "at": [
   -5.04,
   -2.28
  ],
  "corner": "top-left",
  "source": "silk-marker",
  "derived_from": "TO-252-2@sha256:18c28e5e147d5e9b"
 },
 "pad_count": 3,
 "symbol_pins": [
  "1",
  "2",
  "3"
 ],
 "paste_apertures": 4,
 "issues": [],
 "pads": [
  {
   "pad": "1",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    -2.28
   ],
   "rot": 0.0,
   "size": [
    2.2,
    1.2
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "1",
   "name": "VIN",
   "type": "power_in",
   "description": "Unregulated DC input voltage. For the 12V variant, VI up to 35V absolute max; recommended operating range ~14.5V to 30V. Bypass to GND with 0.33µF ceramic close to the pin.",
   "is_pin1": true,
   "source": {
    "geometry": "TO-252-2.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "2",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    1.26,
    0.0
   ],
   "rot": 0.0,
   "size": [
    6.4,
    5.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask"
   ],
   "thermal": false,
   "pin": "2",
   "name": "GND",
   "type": "power_in",
   "description": "Common ground reference. Electrically connected to the exposed TAB of the TO-252-2 package; solder the TAB to a copper pour for both grounding and heatsinking. Also the package tab: exposed thermal/electrical tab, internally tied to GND (pin 2). Solder to a ground copper pour to conduct heat away from the die.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-2.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "3",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    2.28
   ],
   "rot": 0.0,
   "size": [
    2.2,
    1.2
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "3",
   "name": "VOUT",
   "type": "power_out",
   "description": "Regulated +12V output (11.75V-12.25V typical at TJ=25°C), up to 0.5A with adequate heatsinking. Bypass to GND with a 0.1µF ceramic close to the pin for stability.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-2.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  }
 ]
}