component
TL431ACZ
Public Made by Adomby adom
STMicroelectronics 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
markdownTL431ACZ
STMicroelectronics · Voltage Reference · TO-92
TL431ACZ from STMicroelectronics, in a TO-92. 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 | Anode | power_in | Cathode return terminal; cathode-to-anode voltage VKA must be maintained between Vref and 36 V (absolute maximum 37 V). |
| 2 | Cathode | output | Current sink output terminal; operates with continuous cathode current 1 to 100 mA (absolute maximum -100 to +150 mA). |
| 3 | Ref | input | Reference voltage input terminal for external resistor divider network; accepts reference current -0.05 to +10 mA to set output voltage 2.5 to 36 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-92 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
TL431ACZ - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
tl431acz-etched.step/tl431acz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431acz.step/tl431acz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (22 pp, sha256
d174b1869a9d426d, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).