component
LM431AIM3X-TP
Public Unreviewedby Ray
TECH PUBLIC Voltage Reference, SOT-23. Datasheet-verified pinout, 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
markdownLM431AIM3X-TP
TECH PUBLIC · Voltage Reference · SOT-23
LM431AIM3X-TP from TECH PUBLIC, in a SOT-23. 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 | Cathode (K) terminal. Sink pin of the shunt regulator; connect through a series resistor RB to the supply. VKA absolute max 36 V, continuous cathode current range 1-100 mA (abs max -100 to +150 mA). Dynamic impedance 0.15 Ω typ. |
| 2 | ANODE | passive | Anode (A) terminal. Ground/return of the shunt regulator; all voltages are referenced to the anode. |
| 3 | REF | input | Reference input (R). Feedback input driven by the R1/R2 divider from the cathode. Internally compared against the 2.495 V bandgap; reference input current 0.7 µA typ, abs max reference input current 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
LM431AIM3X-TP
CAD (KiCad official)
- Symbol:
LM431AIM3X-TP - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (5 pp, sha256
76ba4800be83acb6, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).