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TL1431ACDT

Public Made by Adom

by adom

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

componentpower management (pmic)tl1431acdtfactory-2.0.0extractor-text
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docs Publish 0.1.0 · Ray 19h ago
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package.json tl1431acdt: LCSC part number C283415 (was published as the bare integer) · Ray 9m ago
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README.md Initial commit: component/tl1431acdt · Ray 19h ago
tl1431acdt-etched.glb tl1431acdt: factory component page (tier=lcsc) · Ray 19h ago
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TL1431ACDT

STMicroelectronics · Voltage Reference · SO-8

TL1431ACDT 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; cathode-to-anode voltage VKA ranges from Vref to 36 V (37 V absolute max) with cathode current of 1 to 100 mA.
2 Anode passive Anode of the shunt regulator, the lowest-potential (ground) terminal; shorted internally to pins 3, 6 and 7 in the pin diagram.
3 Anode (unlabeled) passive Unlabeled in Figure 2 but drawn with a dot tying it to the internal anode net.
4 NC unconnected No connection.
5 NC unconnected No connection.
6 Anode (unlabeled) passive Unlabeled in Figure 2 but drawn with a dot tying it to the internal anode net.
7 Anode passive Anode of the shunt regulator, the lowest-potential (ground) terminal.
8 Ref input Reference input that sets the output voltage via an external divider; Vref is 2.500 V typical (2.493 to 2.507 V for the TL1431AC) and the input current range is -0.05 to +10 mA.

Key specifications

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

CAD (KiCad official)

  • Symbol: TL1431ACDT
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: tl1431acdt-etched.step / tl1431acdt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl1431acdt.step / tl1431acdt.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 2026-10-05, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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