component
TL431ILP
Public Made by Adomby adom
Texas Instruments Voltage Reference, TO-92-3. 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
markdownTL431ILP
Texas Instruments · Voltage Reference · TO-92-3
TL431ILP from Texas Instruments, in a TO-92-3. 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 | CATHODE | passive | Shunt-regulator cathode terminal; when biased with a cathode current Imin≥1mA (recommended range 1mA to 100mA, absolute max −100mA to 150mA) it regulates the cathode-to-anode voltage VKA from Vref (~2.5V) up to 36V (absolute max 37V). |
| 2 | ANODE | passive | Common pin of the device (typically connected to ground/circuit common), serving as the return path for cathode current. |
| 3 | REF | input | High-impedance reference/feedback input that sets the internal 2.495V threshold relative to ANODE; requires an input current (Iref) typically 2µA to 4µA (must be ≥ the minimum needed to bias the internal transistor, absolute maximum input current range −0.05mA to 10mA). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TO-92-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
TL431ILP - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
tl431ilp-etched.step/tl431ilp-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431ilp.step/tl431ilp.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (86 pp, sha256
313277b9351e61ed, retrieved 2026-09-23, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).