# TPST236A054U

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-23-6

TPST236A054U from TECH PUBLIC, in a SOT-23-6. 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 | ESD-protected data line pin, rated for 5V reverse working voltage to ground and 0.3pF typical I/O-to-I/O capacitance. |
| 2 | GND | power_in | Ground reference of the TVS array, connected to the anode of the internal Zener; I/O pins are specified relative to it. |
| 3 | I/O2 | passive | ESD-protected data line pin, rated for 5V reverse working voltage to ground and 0.3pF typical I/O-to-I/O capacitance. |
| 4 | I/O3 | passive | ESD-protected data line pin, rated for 5V reverse working voltage to ground and 0.3pF typical I/O-to-I/O capacitance. |
| 5 | VCC | power_in | Power line protection pin connected to the internal Zener cathode (shown at the top rail); the datasheet specifies 18V max clamping at IPP=17A for VCC to ground. |
| 6 | I/O4 | passive | ESD-protected data line pin, rated for 5V reverse working voltage to ground and 0.3pF typical I/O-to-I/O capacitance. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-6 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TPST236A054U`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `tpst236a054u-etched.step` / `tpst236a054u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpst236a054u.step` / `tpst236a054u.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/8590215484038942720) (4 pp, sha256 `f10f76887f58b668`, retrieved 2026-10-09, 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/tpst236a054u-datasheet.pdf)