component

ATL431AIDBZR

Public Unreviewed

by Ray

Texas Instruments Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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ATL431AIDBZR

Texas Instruments · Voltage Reference · SOT-23

ATL431AIDBZR from Texas Instruments, 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 CATHODE passive Shunt current/voltage input (K). Sinks the shunt current when Vref threshold is exceeded; withstands up to 40 V max and 150 mA continuous (recommended 0.035 mA to 100 mA). Typically pulled up through a series resistor from the supply being regulated.
2 REF input Reference input; threshold relative to the common ANODE. Internal bandgap forces the shunt to conduct when V(REF-ANODE) exceeds Vref (typ. 2.500 V). Iref typ. 150 nA, allowed range −0.05 to 10 mA.
3 ANODE passive Common pin (A), normally connected to ground. All voltages are referenced to ANODE.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23
Category PMIC
Pins 3

Ordering variants

  • ATL431AIDBZR
  • ATL431AIDBZRIDBZT
  • ATL431AIDBZRBIDBZR
  • ATL431AIDBZRAQDBZR
  • ATL431AIDBZRBQDBZR

CAD (KiCad official)

  • Symbol: ATL431AIDBZR
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
atl431aidbzr.step 59 KB You want the bare part, or you mark your own boards.
atl431aidbzr-etched.step 1.6 MB You want the part with ATL431AIDBZR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 433 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: Texas Instruments datasheet (31 pp, sha256 ef107d8a8d5c2bab, retrieved 2026-08-17, tier: manufacturer)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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