# SMAJ30CAQ

**Yangzhou Yangjie Elec Tech** · ESD And Surge Protection (TVS/ESD) · DO-214AC(SMA)

SMAJ30CAQ from Yangzhou Yangjie Elec Tech, 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 | A1 | passive | Bi-directional TVS terminal with no polarity marking, interchangeable with the other terminal; SMAJ30CAQ has VRWM 30.0 V, VBR 33.3-36.8 V at 1 mA and maximum clamping voltage 48.4 V at 8.3 A IPP. |
| 2 | A2 | passive | Bi-directional TVS terminal with no polarity marking, interchangeable with the other terminal; 400 W peak pulse power with a 10/1000 µs waveform and maximum reverse leakage 1 µA at VRWM. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | DO-214AC(SMA) |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak power dissipation | PPPM |  |  | 400 | W | 10/1000us waveform | 1 |
| Power dissipation | PD |  |  | 1.25 | W | Ta=25℃ | 1 |
| Operating junction temperature range | TJ | -55 |  | 175 | ℃ |  | 1 |
| Storage temperature range | TSTG | -55 |  | 175 | ℃ |  | 1 |
| Breakdown voltage | VBR | 33.3 |  |  | V | @ IT = 1 mA (test current column IT 1 mA) | 2 |
| Breakdown voltage | VBR |  |  | 36.8 | V | @ IT = 1 mA (test current column IT 1 mA) | 2 |
| Maximum reverse leakage current | IR |  |  | 1 | μA | @ VRWM = 30.0 V | 2 |
| Working peak reverse voltage | VRWM |  |  | 30 | V |  | 2 |
| Maximum reverse surge current | IPP |  |  | 8.3 | A |  | 2 |
| Maximum clamping voltage | VC |  |  | 48.4 | V | @ IPP | 2 |
| Thermal resistance, junction to lead | RθJL |  | 30 |  | ℃/W | junction to lead | 3 |
| Thermal resistance, junction to ambient | RθJA |  | 120 |  | ℃/W | junction to ambient | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing |  | black | 4. Body color: Black | 3 |
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `SMAJ30CAQ`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `smaj30caq-etched.step` / `smaj30caq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj30caq.step` / `smaj30caq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603110891265413120) (6 pp, sha256 `74da59e2014c8eb0`, retrieved 2026-10-21, 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/smaj30caq-datasheet.pdf)