# TPD4E02B04QDQARQ1

**Texas Instruments** · ESD And Surge Protection (TVS/ESD) · USON-10(1x2.5)

TPD4E02B04QDQARQ1 from Texas Instruments, in a USON-10(1x2.5). 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 | bidirectional | ESD protected I/O channel; 0.25 pF typical capacitance, supports data rates up to 10 Gbps |
| 2 | IO2 | bidirectional | ESD protected I/O channel; 0.25 pF typical capacitance, supports data rates up to 10 Gbps |
| 3 | GND | power_in | Ground; ESD current return path |
| 4 | IO3 | bidirectional | ESD protected I/O channel; 0.25 pF typical capacitance, supports data rates up to 10 Gbps |
| 5 | IO4 | bidirectional | ESD protected I/O channel; 0.25 pF typical capacitance, supports data rates up to 10 Gbps |
| 6 | NC | unconnected | Not connected; reserved for optional straight-through routing, can be left floating or grounded |
| 7 | NC | unconnected | Not connected; reserved for optional straight-through routing, can be left floating or grounded |
| 8 | GND | power_in | Ground; ESD current return path |
| 9 | NC | unconnected | Not connected; reserved for optional straight-through routing, can be left floating or grounded |
| 10 | NC | unconnected | Not connected; reserved for optional straight-through routing, can be left floating or grounded |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | USON-10(1x2.5) |
| Category | Circuit Protection |
| Pins | 10 |

## CAD (KiCad official)

- Symbol: `TPD4E02B04QDQARQ1`
- Footprint: `Package_SON:USON-10_2.5x1.0mm_P0.5mm`
- 3D model: USON-10(1x2.5) (KiCad packages3D, STEP)
- 3D model files: `tpd4e02b04qdqarq1-etched.step` / `tpd4e02b04qdqarq1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpd4e02b04qdqarq1.step` / `tpd4e02b04qdqarq1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tpd4e02b04-q1) (26 pp, sha256 `8532caeeb2809611`, retrieved 2026-10-03, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/tpd4e02b04qdqarq1-datasheet.pdf)