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TL431K-T92-B
Public Made by Adomby adom
UTC Unisonic Tech Voltage Reference, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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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README
markdownTL431K-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431k-t92-b.step/tl431k-t92-b.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).