# BST236A054U

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

BST236A054U 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 | ESD-protected data/power line input, steered by the diode array to Vcc and GND, with 0.2 pF typ. I/O-to-I/O capacitance. |
| 2 | GND | power_in | Ground reference for the diode array; I/O-to-GND capacitance is 0.36 pF typ. and 0.5 pF max at VR = 0 V, 1 MHz. |
| 3 | I/O3 | passive | ESD-protected data/power line input, protected to IEC 61000-4-2 ±12 kV contact and ±15 kV air. |
| 4 | I/O4 | passive | ESD-protected data/power line input, rated for 3.5 A peak pulse current (8/20 µs) with clamping voltage of 13 V max. |
| 5 | Vcc | power_in | Positive rail of the diode array, connected to the internal avalanche diode with reverse stand-off voltage of 5.0 V and breakdown voltage of 6.8 V typ. at 1 mA. |
| 6 | I/O6 | passive | ESD-protected data/power line input, with reverse leakage of 500 nA max at VRWM = 5 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `BST236A054U`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `bst236a054u-etched.step` / `bst236a054u-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bst236a054u.step` / `bst236a054u.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/8588884613108273152) (4 pp, sha256 `553e5645548405fb`, 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/bst236a054u-datasheet.pdf)