component

TL1431IYDT

Public Made by Adom

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STMicroelectronics Voltage Reference, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)tl1431iydtfactory-2.0.0extractor-text

Verified TL1431IYDT

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: TL1431IYDT · SO-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 27-page datasheet
  • ✓distributor: lcsc C2156704, digikey 497-10233-2-ND, mouser 511-TL1431IYDT
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-1vdz8g73/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tl1431iydt.kicad_sym✓ tl1431iydt.kicad_mod✓ tl1431iydt.step
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Ray Publish 0.1.0 351bf24 1d ago

TL1431IYDT

STMicroelectronics · Voltage Reference · SO-8

TL1431IYDT from STMicroelectronics, in a SO-8. 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 passive Cathode of the shunt regulator, which sinks 1 to 100 mA with VKA from Vref up to 36 V (absolute maximum 37 V).
2 Anode power_in Anode of the shunt regulator, used as the ground/return terminal and connected internally to the other anode pins.
3 Anode power_in Unlabeled in Figure 2 but drawn with a junction dot to the internal anode line, so it is treated as an anode connection.
4 NC unconnected No internal connection.
5 NC unconnected No internal connection.
6 Anode power_in Unlabeled in Figure 2 but drawn with a junction dot to the internal anode line, so it is treated as an anode connection.
7 Anode power_in Anode of the shunt regulator, used as the ground/return terminal and connected internally to the other anode pins.
8 Ref input Reference input that sets the output voltage via an external R1/R2 divider (VKA = Vref(1+R1/R2)+Iref*R1), with Vref typically 2.5 V and Iref absolute maximum range -0.05 to +10 mA.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SO-8
Category Power Management (PMIC)
Pins 8

CAD (KiCad official)

  • Symbol: TL1431IYDT
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: tl1431iydt-etched.step / tl1431iydt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl1431iydt.step / tl1431iydt.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (27 pp, sha256 b6e98452fdf42eee, retrieved 2026-11-05, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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