# SMAJ3.3A

**BORN** · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

SMAJ3.3A from BORN, in a SMA(DO-214AC). 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 | K | passive | Cathode of the unidirectional SMAJ3.3A, marked by the band on the package, connected to the positive side with a 3.3V reverse stand-off voltage and 4.20V to 6.55V breakdown at 1.0mA. |
| 2 | A | passive | Anode of the unidirectional SMAJ3.3A, the unbanded end, which is the return side and conducts forward with VF of 5.0V max at 25A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BORN |
| Package | SMA(DO-214AC) |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SMAJ3.3A`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `smaj3-3a-etched.step` / `smaj3-3a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj3-3a.step` / `smaj3-3a.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/8590908863719948288) (6 pp, sha256 `2a5e9935fc3673ed`, retrieved 2026-10-12, 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/smaj3-3a-datasheet.pdf)