component

TL431BFDT

Public Made by Adom

by adom

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

componentpower management (pmic)tl431bfdtfactory-2.0.0extractor-text
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Generated by kicad-footprint-generator · KiCad file format 20260206
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TL431BFDT

Nexperia · Voltage Reference · SOT-23

TL431BFDT from Nexperia, 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 K passive Cathode of the shunt regulator; recommended operating cathode current IK is 1 mA to 100 mA with cathode-anode voltage VKA up to Vref to 36 V.
2 REF input Reference input, Vref typically 2.495 V (2.440 V to 2.550 V for the 2.0 % grade; 2.483 V to 2.507 V for the B-grade), with reference current Iref limited to -0.05 mA to 10 mA.
3 A passive Anode of the shunt regulator, forming the other terminal of the cathode-anode path; cathode-anode voltage VKA is rated up to 36 V in recommended operation (37 V absolute maximum).

Key specifications

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

CAD (KiCad official)

  • Symbol: TL431BFDT
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: tl431bfdt-etched.step / tl431bfdt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431bfdt.step / tl431bfdt.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (19 pp, sha256 4418d6a27f332797, 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