# PESD3V3L2BT-FS

**FUXINSEMI** · ESD Protection Devices · SOT-23

PESD3V3L2BT-FS from FUXINSEMI, in a SOT-23. 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 I/O line 1 (bidirectional TVS to pin 3), breakdown 4.0 V to 6.0 V at IT=1mA, clamping max 7 V at IPP=1A and 12 V at IPP=38A (8/20µs). |
| 2 | I/O2 | passive | Protected I/O line 2 (bidirectional TVS to pin 3), breakdown 4.0 V to 6.0 V at IT=1mA, clamping max 7 V at IPP=1A and 12 V at IPP=38A (8/20µs). |
| 3 | COMMON | passive | Common pin of the diode array, reference for Pin1/Pin2 to Pin3 protection; the datasheet does not label it as GND, and pin 1 to pin 2 breakdown is 8.0 V to 12 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SOT-23 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `PESD3V3L2BT-FS`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `pesd3v3l2bt-fs-etched.step` / `pesd3v3l2bt-fs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd3v3l2bt-fs.step` / `pesd3v3l2bt-fs.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUXINSEMI datasheet](docs/pesd3v3l2bt-fs-datasheet.pdf) (4 pp, sha256 `1bb2fa1a18263eb4`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/pesd3v3l2bt-fs-datasheet.pdf)