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TLV431BFTA

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by Ray

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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TLV431BFTA

Diodes Incorporated · Voltage Reference · SOT-23

TLV431BFTA from Diodes Incorporated, 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 (feedback) input. High-impedance sense pin of the internal error amplifier; compared against the internal 1.24V bandgap VREF. The external R1/R2 divider from CATHODE to ANODE ties into this pin to program VKA = VREF x (1 + R1/R2). Typical input bias current 0.15 uA (0.5 uA max).
2 ANODE power_in Anode (return / ground) terminal. Common negative rail of the internal shunt element; all internal voltages are referenced to this pin. In a standard shunt-regulator topology this connects to system GND.
3 CATHODE power_out Cathode (regulated) terminal. Drain of the internal shunt output transistor; sinks current from VIN through the external series resistor R3 to maintain VKA at the programmed setpoint. Absolute max VKA = 20V, continuous IKA = -20 to +20 mA, minimum cathode current for regulation approximately 55 uA typ (80 uA max).

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • TLV431BFTAAFTA
  • TLV431BFTA
  • TLV431BFTATFTA
  • TLV431BFTAAE5TA
  • TLV431BFTABE5TA
  • TLV431BFTAAH6TA
  • TLV431BFTABH6TA

CAD (KiCad official)

  • Symbol: TLV431BFTA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (17 pp, sha256 bfc6983112ce20da, retrieved 2026-08-17, tier: manufacturer)
  • 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