# TPESDR0502BT1G

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-523

TPESDR0502BT1G from TECH PUBLIC, in a SOT-523. 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 | IO1 | passive | TVS diode array I/O line 1 protected channel, 5V max reverse working voltage, 0.5pF typ (0.6pF max) capacitance to GND. |
| 2 | IO2 | passive | TVS diode array I/O line 2 protected channel, 5V max reverse working voltage, 0.5pF typ (0.6pF max) capacitance to GND. |
| 3 | GND | power_in | Common ground connection of the TVS diode array, shared by both I/O protection diodes. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-523 |
| Category | Circuit Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `TPESDR0502BT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tpesdr0502bt1g-etched.step` / `tpesdr0502bt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpesdr0502bt1g.step` / `tpesdr0502bt1g.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/8588905701406490624) (4 pp, sha256 `4d2aa18174b3ff16`, 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/tpesdr0502bt1g-datasheet.pdf)