component

TLV431AFTA

Public Made by Adom

by adom

Diodes Incorporated Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs tlv431afta: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json tlv431afta: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 13h ago
README.md tlv431afta: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 16d ago
tlv431afta-etched.fit.json tlv431afta: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
tlv431afta-etched.glb tlv431afta: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
tlv431afta-etched.step tlv431afta: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 5d ago
tlv431afta.glb Publish 0.1.0 · Ray 1mo ago
tlv431afta.kicad_mod Publish 0.1.0 · Ray 1mo ago
tlv431afta.kicad_sym Publish 0.1.0 · Ray 1mo ago
tlv431afta.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 3 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
tlv431afta.step Publish 0.1.0 · Ray 1mo ago

TLV431AFTA

Diodes Incorporated · Voltage Reference · SOT-23

TLV431AFTA from Diodes Incorporated, in a SOT-23. 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 REF input Reference / feedback input. Compared internally to the 1.24 V bandgap reference; drives the internal error amplifier that regulates cathode current so that V(REF) equals VREF. Typical input current 0.15 uA (0.5 uA max); absolute maximum input current range -0.05 to +3 mA.
2 CATHODE power_in Cathode (K). Regulated shunt terminal; sinks current from the load/bias resistor to maintain V(REF) = 1.24 V. Recommended operating cathode voltage VREF to 18 V; cathode current 0.1 mA to 15 mA (absolute max +/-20 mA, VKA max 20 V). Minimum cathode current for regulation IKMIN ~ 55 uA typ.
3 ANODE power_in Anode (A). Common return terminal; all datasheet voltages are referenced to ANODE. Normally tied to the low-voltage rail (GND) of the regulated network.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • TLV431AFTA
  • TLV431AFTAE5
  • TLV431AFTAH6

CAD (KiCad official)

  • Symbol: TLV431AFTA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: tlv431afta-etched.step / tlv431afta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlv431afta.step / tlv431afta.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
tlv431afta.step 59 KB You want the bare part, or you mark your own boards.
tlv431afta-etched.step 1.2 MB You want the part with TLV431AFTA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 319 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (17 pp, sha256 bfc6983112ce20da, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF