# SMA6J20AQ

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

SMA6J20AQ 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (min) | VBR | 22.2 |  |  | V | IT = 1 mA (pulse test tp≤50ms, note 3); SMA6J20AQ unidirectional | 2 |
| Breakdown voltage (max) | VBR |  |  | 24.5 | V | IT = 1 mA (pulse test tp≤50ms, note 3); SMA6J20AQ unidirectional | 2 |
| Maximum reverse leakage | IR |  |  | 1 | μA | @ VRWM = 20 V | 2 |
| Maximum reverse surge current | IPP |  |  | 18.5 | A | Surge current waveform per Fig.3 and derated per Fig.2 (note 4) | 2 |
| Maximum clamping voltage | Vc |  |  | 32.4 | V | @ IPP | 2 |
| Maximum instantaneous forward voltage | VF |  |  | 3.5 | V | at 25A for unidirectional only | 1 |
| Peak power dissipation | PPPM |  |  | 600 | W | 10/1000us waveform (notes 1)(2), Fig.1 | 1 |
| Power dissipation | PD |  |  | 3 | W | on infinite heat sink at TL=85℃ | 1 |
| Peak forward surge current | IFSM |  |  | 60 | A | 8.3 ms single half sine-wave, unidirectional only (note 2) | 1 |
| Operating junction temperature | TJ | -55 |  | 175 | ℃ |  | 1 |
| Storage temperature range | TSTG | -55 |  | 175 | ℃ |  | 1 |
| Thermal resistance, junction to lead (typical) | RθJL |  | 30 |  | ℃/W | junction to lead | 2 |
| Thermal resistance, junction to ambient (typical) | RθJA |  | 120 |  | ℃/W | junction to ambient | 2 |

## CAD (KiCad official)

- Symbol: `SMA6J20AQ`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `sma6j20aq-etched.step` / `sma6j20aq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sma6j20aq.step` / `sma6j20aq.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/8603169818963165184) (5 pp, sha256 `abaac1e16595e043`, retrieved 2026-10-15, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/sma6j20aq-datasheet.pdf)