TPESD0502BA

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

TPESD0502BA 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	I/O1	passive	Protected line 1 (TVS diode cathode); 5V max reverse working voltage, 0.6pF max to ground, 0.35pF max between I/O pins.
2	I/O2	passive	Protected line 2 (TVS diode cathode); 5V max reverse working voltage, 0.6pF max to ground, 0.35pF max between I/O pins.
3	GND	power_in	Common anode of both TVS diodes, ground reference; ESD rated ±20kV air and ±15kV contact per IEC 61000-4-2.

Key specifications

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

CAD (KiCad official)

Symbol: TPESD0502BA
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: tpesd0502ba-etched.step / tpesd0502ba-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpesd0502ba.step / tpesd0502ba.glb are the bare package body.

Provenance

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

Datasheet: TECH PUBLIC datasheet (4 pp, sha256 86e4dca86d344f04, 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

# TPESD0502BA

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

TPESD0502BA 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 | I/O1 | passive | Protected line 1 (TVS diode cathode); 5V max reverse working voltage, 0.6pF max to ground, 0.35pF max between I/O pins. |
| 2 | I/O2 | passive | Protected line 2 (TVS diode cathode); 5V max reverse working voltage, 0.6pF max to ground, 0.35pF max between I/O pins. |
| 3 | GND | power_in | Common anode of both TVS diodes, ground reference; ESD rated ±20kV air and ±15kV contact per IEC 61000-4-2. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TPESD0502BA`
- 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: `tpesd0502ba-etched.step` / `tpesd0502ba-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpesd0502ba.step` / `tpesd0502ba.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/8589836352654245888) (4 pp, sha256 `86e4dca86d344f04`, 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/tpesd0502ba-datasheet.pdf)