component
LM431ACM3
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.mdadded+39@@ -0,0 +1,39 @@+# LM431ACM3++**Texas Instruments** · Voltage Reference · SOT-23-3++LM431ACM3 from Texas Instruments, in a SOT-23-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | Cathode | bidirectional | Shunt regulator output voltage and current terminal; accepts voltage from 2.5 V to 37 V maximum with continuous current range -10 mA to 150 mA. |+| 2 | Reference | input | Reference voltage input pin for adjustable output voltage divider network; typical reference level 2.5 V with maximum input current 10 mA. |+| 3 | Anode | power_in | Ground return terminal normally connected to ground; provides shunt current sink path with continuous current capability -10 mA to 150 mA. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-3 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `LM431ACM3`+- Footprint: `Package_TO_SOT_SMD:SOT-23-3`+- 3D model: SOT-23-3 (KiCad packages3D, STEP)+- 3D model files: `lm431acm3-etched.step` / `lm431acm3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm431acm3.step` / `lm431acm3.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm431) (37 pp, sha256 `9c0bcff4967eaad2`, retrieved 2026-10-07, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm431acm3-datasheet.pdf)
page.jsonadded+169@@ -0,0 +1,169 @@+{+ "slug": "lm431acm3",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm431acm3",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm431acm3.kicad_sym",+ "lm431acm3.kicad_mod",+ "lm431acm3.glb",+ "lm431acm3.step",+ "lm431acm3.lbr",+ "docs/hero.png",+ "docs/lm431acm3-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "lm431acm3-hero.glb",+ "lm431acm3-hero.overlay.json"+ ],+ "component": {+ "mpn": "LM431ACM3",+ "manufacturer": "Texas Instruments",+ "package": "SOT-23-3",+ "pin_count": 3,+ "category": "Power Management (PMIC)",+ "subcategory": "Voltage Reference",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm431",+ "parts": {+ "symbol": "lm431acm3.kicad_sym",+ "footprint": "lm431acm3.kicad_mod",+ "model_3d": "lm431acm3-hero.glb",+ "model_3d_plain": "lm431acm3.glb",+ "model_3d_step": "lm431acm3-etched.step",+ "model_3d_step_plain": "lm431acm3.step",+ "lbr": "lm431acm3.lbr"+ },+ "distributor_links": {+ "lcsc": "C2870613",+ "digikey": "LM431ACM3TR-ND",+ "mouser": "926-LM431ACM3"+ },+ "distributor_check": {+ "checked_at": "2026-10-07T02:38:16Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "LM431ACM3TR-ND",+ "status": "found",+ "lifecycle": "Obsolete"+ },+ "mouser": {+ "pn": "926-LM431ACM3",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "Cathode",+ "type": "bidirectional",+ "description": "Shunt regulator output voltage and current terminal; accepts voltage from 2.5 V to 37 V maximum with continuous current range -10 mA to 150 mA."+ },+ {+ "number": "2",+ "name": "Reference",+ "type": "input",+ "description": "Reference voltage input pin for adjustable output voltage divider network; typical reference level 2.5 V with maximum input current 10 mA."+ },+ {+ "number": "3",+ "name": "Anode",+ "type": "power_in",+ "description": "Ground return terminal normally connected to ground; provides shunt current sink path with continuous current capability -10 mA to 150 mA."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 10,+ "cost_usd": 0.1068,+ "at": "2026-10-07T02:37:55"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm431",+ "pages": 37,+ "sha256": "9c0bcff4967eaad2",+ "source_tier": "lcsc"+ },+ "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": "lm431acm3.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 2.5,+ 3,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "lm431acm3-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 2.5,+ 3,+ 1.2+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "5b69e596bb2474a53de6366afcd49248dae5e234aab6d541b6e65c2af2fefa39",+ "checked": "2026-10-07",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}