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Ray add symbol pin "6" for the exposed thermal pad: the footprint carries the pad and the symbol had none, so it reached no net (vendor string 'TO-252-5' states 5 pins and the footprint has exactly one more pad, so it is the tab) a21e55c 1mo ago
{
 "schema": "adom.pads/1",
 "slug": "xl7015e1",
 "footprint": "TO-252-5_TabPin6",
 "generated_from": {
  "footprint": "TO-252-5_TabPin6@sha256:b88245799fb0ada0",
  "pins": "page.json:component.pins",
  "overrides": null
 },
 "pin1": {
  "pad": "1",
  "at": [
   -5.04,
   -2.28
  ],
  "corner": "top-left",
  "source": "silk-marker",
  "derived_from": "TO-252-5_TabPin6@sha256:b88245799fb0ada0"
 },
 "pad_count": 6,
 "symbol_pins": [
  "1",
  "2",
  "3",
  "4",
  "5",
  "6"
 ],
 "paste_apertures": 4,
 "issues": [],
 "pads": [
  {
   "pad": "1",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    -2.28
   ],
   "rot": 0.0,
   "size": [
    2.2,
    0.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "1",
   "name": "VIN",
   "type": "power_in",
   "description": "Power supply input pin, 5V to 80V operating range (100V absolute max). Requires an electrolytic bypass capacitor (e.g. 33uF/100V) between VIN and GND to suppress noise.",
   "is_pin1": true,
   "source": {
    "geometry": "TO-252-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "2",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    -1.14
   ],
   "rot": 0.0,
   "size": [
    2.2,
    0.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "2",
   "name": "SW",
   "type": "output",
   "description": "Power switch output pin; switching node connected to the internal high-voltage NPN power transistor. Connects to the external inductor and freewheeling diode of the buck converter.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "3",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    0.0
   ],
   "rot": 0.0,
   "size": [
    2.2,
    0.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "3",
   "name": "GND",
   "type": "power_in",
   "description": "Ground pin. The exposed metal tab of the TO252-5L package is also GND and should be tied to the ground plane for thermal dissipation.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "4",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    1.14
   ],
   "rot": 0.0,
   "size": [
    2.2,
    0.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "4",
   "name": "FB",
   "type": "input",
   "description": "Feedback input pin. Senses the output voltage via an external resistor divider; internal reference is 1.25V. VOUT = 1.25 * (1 + R2/R1). Absolute max voltage -0.3V to 7V.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "5",
   "kind": "smd",
   "shape": "roundrect",
   "at": [
    -5.04,
    2.28
   ],
   "rot": 0.0,
   "size": [
    2.2,
    0.8
   ],
   "layers": [
    "F.Cu",
    "F.Mask",
    "F.Paste"
   ],
   "thermal": false,
   "pin": "5",
   "name": "EN",
   "type": "input",
   "description": "Enable pin, active-low logic: LOW (<0.8V) enables the converter, HIGH (>1.6V) shuts it down. Floating is treated as low (enabled). Absolute max voltage -0.3V to 7V.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  },
  {
   "pad": "6",
   "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": "6",
   "name": "GND",
   "type": "power_in",
   "description": "Exposed metal tab on the back of the TO252-5L package, electrically connected to GND. Used for thermal dissipation; solder to the PCB ground plane.",
   "is_pin1": false,
   "source": {
    "geometry": "TO-252-5_TabPin6.kicad_mod",
    "meaning": "page.json:component.pins",
    "correspondence": "kicad: symbol pin number == pad name"
   }
  }
 ]
}