component
TL431CDR
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# TL431CDR++**Texas Instruments** · Voltage Reference · SOIC-8++TL431CDR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | CATHODE | output | Output terminal supporting 1 to 100 mA continuous shunt current sink with programmable voltage from Vref (approximately 2.5V) to 36V and 0.2Ω typical output impedance. |+| 2 | ANODE | power_in | Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution. |+| 3 | ANODE | power_in | Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution. |+| 4 | NC | unconnected | No internal connection; leave unconnected per datasheet specifications. |+| 5 | NC | unconnected | No internal connection; leave unconnected per datasheet specifications. |+| 6 | ANODE | power_in | Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution. |+| 7 | ANODE | power_in | Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution. |+| 8 | REF | input | Reference input pin with nominal threshold of 2.495V requiring 2 to 4 µA input current for linear operation as feedback node to set regulator output voltage. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## CAD (KiCad official)++- Symbol: `TL431CDR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)+- 3D model files: `tl431cdr-etched.step` / `tl431cdr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tl431cdr.step` / `tl431cdr.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/lit/ds/symlink/tl431c.pdf) (85 pp, sha256 `ed2e90697de4e2c5`, retrieved 2026-09-22, tier: manufacturer)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/tl431cdr-datasheet.pdf)
page.jsonadded+143@@ -0,0 +1,143 @@+{+ "slug": "tl431cdr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Voltage Reference, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "tl431cdr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "tl431cdr.kicad_sym",+ "tl431cdr.kicad_mod",+ "tl431cdr.glb",+ "tl431cdr.step",+ "tl431cdr.lbr",+ "docs/hero.png",+ "docs/tl431cdr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "TL431CDR",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-8",+ "pin_count": 8,+ "category": "Power Management (PMIC)",+ "subcategory": "Voltage Reference",+ "datasheet": "https://www.ti.com/lit/ds/symlink/tl431c.pdf",+ "parts": {+ "symbol": "tl431cdr.kicad_sym",+ "footprint": "tl431cdr.kicad_mod",+ "model_3d": "tl431cdr-etched.glb",+ "model_3d_plain": "tl431cdr.glb",+ "model_3d_step": "tl431cdr-etched.step",+ "model_3d_step_plain": "tl431cdr.step",+ "lbr": "tl431cdr.lbr"+ },+ "distributor_links": {+ "lcsc": "C6972"+ },+ "pins": [+ {+ "number": "1",+ "name": "CATHODE",+ "type": "output",+ "description": "Output terminal supporting 1 to 100 mA continuous shunt current sink with programmable voltage from Vref (approximately 2.5V) to 36V and 0.2Ω typical output impedance."+ },+ {+ "number": "2",+ "name": "ANODE",+ "type": "power_in",+ "description": "Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution."+ },+ {+ "number": "3",+ "name": "ANODE",+ "type": "power_in",+ "description": "Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution."+ },+ {+ "number": "4",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection; leave unconnected per datasheet specifications."+ },+ {+ "number": "5",+ "name": "NC",+ "type": "unconnected",+ "description": "No internal connection; leave unconnected per datasheet specifications."+ },+ {+ "number": "6",+ "name": "ANODE",+ "type": "power_in",+ "description": "Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution."+ },+ {+ "number": "7",+ "name": "ANODE",+ "type": "power_in",+ "description": "Common ground return pin for regulator; must be connected to system ground with all other ANODE pins for proper current distribution."+ },+ {+ "number": "8",+ "name": "REF",+ "type": "input",+ "description": "Reference input pin with nominal threshold of 2.495V requiring 2 to 4 µA input current for linear operation as feedback node to set regulator output voltage."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Multiple ANODE pins (2, 3, 6, 7) require connection to common ground point; improper grounding can a; Absolute maximum cathode voltage is 37V per Page 5; nominal operating voltage range is Vref (2.5V) t"+ ],+ "pages_sent": 85,+ "cost_usd": 0.8733,+ "at": "2026-09-22T22:16:09"+ },+ "datasheet": {+ "url": "https://www.ti.com/lit/ds/symlink/tl431c.pdf",+ "pages": 85,+ "sha256": "ed2e90697de4e2c5",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 8,+ "described": 8,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}