# TP432C249T3

**TECH PUBLIC** · Voltage Reference · SOT-89-3

TP432C249T3 from TECH PUBLIC, in a SOT-89-3. 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 | CATHODE | passive | Cathode of the adjustable shunt regulator, rated to 36 V maximum cathode voltage with 1.0 to 100 mA continuous cathode current. |
| 2 | ANODE | passive | Anode of the shunt regulator, the reference for all voltage ratings, normally connected to ground. |
| 3 | REF | input | Reference input that sets the output voltage via an external divider, with a typical reference voltage of 2.495 V and a maximum reference input current of 10 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `TP432C249T3`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `tp432c249t3-etched.step` / `tp432c249t3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tp432c249t3.step` / `tp432c249t3.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [TECH PUBLIC datasheet](docs/tp432c249t3-datasheet.pdf) (5 pp, sha256 `d0f4454506ca563d`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (vision), consensus `claude-opus-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).

[Datasheet PDF](docs/tp432c249t3-datasheet.pdf)