# SMAJ28CA-E3

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

SMAJ28CA-E3 from Vishay Intertech, 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 | A1 | passive | Bi-directional (CA suffix) terminal with no polarity marking, electrical characteristics apply in both directions, interchangeable with the other terminal; VWM 28 V for SMAJ28CA. |
| 2 | A2 | passive | Bi-directional (CA suffix) terminal with no polarity marking, electrical characteristics apply in both directions, interchangeable with the other terminal; VWM 28 V for SMAJ28CA. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SMAJ28CA-E3`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `smaj28ca-e3-etched.step` / `smaj28ca-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj28ca-e3.step` / `smaj28ca-e3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8576005060440219648) (5 pp, sha256 `6a47e343783a0c89`, retrieved 2026-10-13, 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/smaj28ca-e3-datasheet.pdf)