component
TL431IL5T
Public Made by Adomby adom
STMicroelectronics Voltage Reference, SOT-23-5L. 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
markdownTL431IL5T
STMicroelectronics · Voltage Reference · SOT-23-5L
TL431IL5T from STMicroelectronics, in a SOT-23-5L. 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 | passive | Anode terminal of the TL431 shunt regulator; the cathode-to-anode operating voltage range is Vref to 36 V and the absolute maximum continuous cathode current range is -100 to +150 mA. |
| 2 | NC | unconnected | No internal connection. |
| 3 | NC | unconnected | No internal connection. |
| 4 | Ref | input | Reference input pin connected to the external resistor divider that sets the output voltage between 2.5 V and 36 V; reference input current range is -0.05 to +10 mA with a nominal Vref of 2.495 V. |
| 5 | Cathode | passive | Cathode terminal that operates over a cathode current range of 1 to 100 mA (absolute maximum -100 to +150 mA) with a typical dynamic impedance of 0.22 Ω. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-5L |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
TL431IL5T - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files:
tl431il5t-etched.step/tl431il5t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431il5t.step/tl431il5t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (22 pp, sha256
6ce15e45f57a7d85, 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).