# TPSP0502BAHTG

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-23

TPSP0502BAHTG from TECH PUBLIC, in a SOT-23. 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 | I/O1 | passive | Protected line 1 (TVS diode anode side per schematic); working voltage 5V, VRWM max 5.5V, with 30pF typ capacitance to pin 2 and 60pF typ to pin 3. |
| 2 | I/O2 | passive | Protected line 2 (TVS diode anode side per schematic); working voltage 5V, VRWM max 5.5V, with 30pF typ capacitance to pin 1 and 60pF typ to pin 3. |
| 3 | GND | power_in | Common connection of both TVS diodes (ground/reference) shared by pins 1 and 2; the datasheet schematic shows it only as pin 3. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `TPSP0502BAHTG`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `tpsp0502bahtg-etched.step` / `tpsp0502bahtg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpsp0502bahtg.step` / `tpsp0502bahtg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590184546869415936) (4 pp, sha256 `f3a4c83fb40e11c9`, retrieved 2026-10-17, 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/tpsp0502bahtg-datasheet.pdf)