component

TL431ASF

Public Made by Adom

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HTC Korea TAEJIN Tech Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)tl431asffactory-2.0.0extractor-text
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Symbol & Footprint

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Datasheet

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Contents

README

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TL431ASF

HTC Korea TAEJIN Tech · Voltage Reference · SOT-23

TL431ASF from HTC Korea TAEJIN Tech, 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 voltage input; sets the regulated output voltage via external resistor divider; reference input current IREF typ. 1.8 µA, max 4.0 µA (IK = 10 mA, R1 = 10 kΩ, R2 = ∞).
2 A power_in Anode terminal; connected to circuit ground; cathode current range (continuous) −100 mA to 150 mA flows from cathode to anode.
3 K passive Cathode terminal (input supply voltage); regulated cathode-to-anode voltage VKA from VREF (≈ 2.495 V) to 40 V; minimum cathode current for regulation IK(MIN) = 0.5 mA; dynamic impedance ZKA typ. 0.27 Ω (IK = 1 mA-100 mA, f ≤ 1 kHz).

Key specifications

Parameter Value
Manufacturer HTC Korea TAEJIN Tech
Package SOT-23
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: TL431ASF
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: tl431asf-etched.step / tl431asf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431asf.step / tl431asf.glb are the bare package body.

Provenance

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

  • Datasheet: HTC Korea TAEJIN Tech datasheet (12 pp, sha256 66b4ce853f1e463b, retrieved 2026-09-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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