# BST236A055R

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

BST236A055R from BORN, 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 | Protected data I/O line steered by diodes to VCC and GND, with 0.25 pF typ (0.35 pF max) IO-to-IO capacitance. |
| 2 | GND | power_in | Ground reference for the TVS and steering diodes, with IO-to-GND capacitance of 0.35 pF typ (0.5 pF max). |
| 3 | I/O2 | passive | Protected data I/O line with ±15 kV IEC 61000-4-2 contact and air ESD protection. |
| 4 | I/O3 | passive | Protected data I/O line with ±15 kV IEC 61000-4-2 contact and air ESD protection. |
| 5 | VCC | power_in | Positive rail connection of the steering diodes, with a reverse stand-off voltage of 5.0 V max. |
| 6 | I/O4 | passive | Protected data I/O line with 4.0 A (8/20 µs) peak pulse current rating. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `BST236A055R`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `bst236a055r-etched.step` / `bst236a055r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bst236a055r.step` / `bst236a055r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BORN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756859578271043584) (4 pp, sha256 `4bd3f72be44a3b56`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/bst236a055r-datasheet.pdf)