component

LR431ALT1G

Public Made by Adom

by adom

LRC Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lr431alt1gfactory-2.0.0extractor-text
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LR431ALT1G

LRC · Voltage Reference · SOT-23

LR431ALT1G from LRC, in a SOT-23. 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 Ref input Reference input that sets the programmable output voltage through two external resistors, with the output adjustable from Vref up to the rated maximum.
2 Cathode passive Cathode is the regulated output terminal; its voltage and continuous current are limited by the absolute maximum ratings table.
3 Anode passive Anode is the return terminal for cathode current, and the minimum cathode current needed for regulation is given in the electrical characteristics.

Key specifications

Parameter Value
Manufacturer LRC
Package SOT-23
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: LR431ALT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lr431alt1g-etched.step / lr431alt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lr431alt1g.step / lr431alt1g.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (5 pp, sha256 59b33cfd29a39e5f, retrieved 2026-10-09, 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