# SMAJ70A-E3

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

SMAJ70A-E3 from Vishay Intertech, in a DO-214AC(SMA). 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 | Cathode | passive | Cathode terminal at the cathode-band end of the unidirectional SMAJ70A, which has a 70 V stand-off voltage (VWM) and 77.8 V to 86.0 V breakdown voltage (VBR) at 1.0 mA. |
| 2 | Anode | passive | Anode terminal at the end opposite the cathode band, with a 400 W peak pulse power rating (10/1000 μs) and a maximum clamping voltage of 113 V at 3.5 A. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SMAJ70A-E3`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `smaj70a-e3-etched.step` / `smaj70a-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj70a-e3.step` / `smaj70a-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/8590893349048442880) (6 pp, sha256 `912f49c028b0d77e`, 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/smaj70a-e3-datasheet.pdf)