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TL431K-T92-B

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UTC Unisonic Tech Voltage Reference, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)tl431k-t92-bfactory-2.0.0extractor-text
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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TL431K-T92-B

UTC Unisonic Tech · Voltage Reference · TO-92

TL431K-T92-B from UTC Unisonic Tech, in a TO-92. 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 R input Reference input (VREF approximately 2.5V) that sets the cathode voltage through an external R1/R2 divider; reference input current range is -0.05 to +10 mA.
2 A power_in Anode, the ground/return terminal of the shunt regulator.
3 K passive Cathode, regulated output from VREF to 36V recommended (37V absolute maximum) with 1 to 100 mA recommended cathode current.

Key specifications

Parameter Value
Manufacturer UTC Unisonic Tech
Package TO-92
Category Power Management (PMIC)
Pins 3

CAD (KiCad official)

  • Symbol: TL431K-T92-B
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: tl431k-t92-b-etched.step / tl431k-t92-b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl431k-t92-b.step / tl431k-t92-b.glb are the bare package body.

Provenance

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

  • Datasheet: UTC Unisonic Tech datasheet (6 pp, sha256 cbc7e42ea3607271, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (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