component

TL431LIBQDBZRQ1

Public Made by Adom

by adom

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

componentpower management (pmic)tl431libqdbzrq1factory-2.0.0extractor-text
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package.json tl431libqdbzrq1: LCSC part number C1852131 (was published as the bare integer) · Ray 4h ago
page.json tl431libqdbzrq1: LCSC part number C1852131 (was published as the bare integer) · Ray 4h ago
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TL431LIBQDBZRQ1

Texas Instruments · Voltage Reference · SOT-23-3

TL431LIBQDBZRQ1 from Texas Instruments, in a SOT-23-3. 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 bidirectional Shunt current/voltage output pin; sinks up to 15mA maximum continuous current; operates from Vref (2.495V) to 36V with cathode current range of 0.6mA to 15mA.
2 REF input Threshold voltage reference input; compare voltage against internal 2.495V reference; requires minimum reference input current IREF ≥ 0.4μA.
3 ANODE power_in Common pin, normally connected to ground; serves as reference point for all voltage measurements.

Key specifications

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

CAD (KiCad official)

  • Symbol: TL431LIBQDBZRQ1
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: tl431libqdbzrq1-etched.step / tl431libqdbzrq1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431libqdbzrq1.step / tl431libqdbzrq1.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (35 pp, sha256 38f20793e4941c3c, retrieved 2026-10-05, tier: lcsc)
  • 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: 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