component

LM431AIZ

Public Made by Adom

by adom

Texas Instruments Voltage Reference, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 7h ago
viewers lm431aiz: viewers · Ray 7h ago
lm431aiz-etched.glb lm431aiz: factory component page (tier=lcsc) · Ray 7h ago
lm431aiz-etched.step lm431aiz: factory component page (tier=lcsc) · Ray 7h ago
lm431aiz-hero.glb lm431aiz: hero GLB from the etched model (keeps the MPN mark) · Ray 7h ago
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lm431aiz.step Publish 0.1.0 · Ray 7h ago
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README.md Initial commit: component/lm431aiz · Ray 7h ago

LM431AIZ

Texas Instruments · Voltage Reference · TO-92-3

LM431AIZ from Texas Instruments, in a TO-92-3. 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 current/output voltage pin; the datasheet limits cathode voltage to 37 V and continuous cathode current to -10 to 150 mA absolute maximum, with 1 to 100 mA recommended.
2 Reference input Reference pin for setting the adjustable output voltage (VREF is 2.5 V typical per the device description), with reference input current limited to 10 mA absolute maximum.
3 Anode power_in Anode pin, normally grounded; the datasheet lists it as an output (O) type, but it is classed here as power_in because it is the normally grounded common terminal.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TO-92-3
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LM431AIZ
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92-3 (KiCad packages3D, STEP)
  • 3D model files: lm431aiz-etched.step / lm431aiz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm431aiz.step / lm431aiz.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 9c0bcff4967eaad2, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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