# SMAJ30CA YK

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

SMAJ30CA YK from TDSEMIC, 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 terminal 1 of the SMAJ30CA (CA suffix); electrical characteristics apply in both directions, with stand-off voltage 30 V and breakdown voltage 33.3 V to 36.8 V at 1.0 mA. |
| 2 | A2 | passive | Bi-directional terminal 2 of the SMAJ30CA; no polarity marking or cathode band on bi-directional types, so the two terminals are interchangeable. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `SMAJ30CA YK`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `smaj30ca-yk-etched.step` / `smaj30ca-yk-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj30ca-yk.step` / `smaj30ca-yk.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TDSEMIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8618862949025411072) (5 pp, sha256 `199d2d9252d5e3d3`, retrieved 2026-10-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/smaj30ca-yk-datasheet.pdf)