# SMAJ6V8A

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

SMAJ6V8A from YFW, 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 (pin 1) of the unipolar SMAJ6V8A; the datasheet gives device limits of 400 W peak pulse power and -55 to +150 °C junction and storage temperature, with no pin-specific limit. |
| 2 | Anode | passive | Anode terminal (pin 2) of the unipolar SMAJ6V8A; the datasheet gives no pin-specific limit beyond the device ratings. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| 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 (UNI, SMAJ6V8A) | VBR | 6.45 |  | 7.14 | V | at IT = 10 mA | 2 |
| Max. clamp voltage (UNI, SMAJ6V8A) | VC |  |  | 10.5 | V | at IPP = 39 A | 2 |
| Reverse leakage current (UNI, SMAJ6V8A) | IR |  |  | 1000 | μA | at VRWM = 5.8 V | 2 |
| Peak pulse power dissipation | PPPM |  |  | 400 | W | TA=25°C, 10/1000 µs waveform (Note 1,2,5, Fig 1) | 1 |
| Peak forward surge current (UNI) | IFSM |  |  | 60 | A | 8.3 ms single half sine-wave, JEDEC method (Note 3,4) | 1 |
| ESD voltage per IEC61000-4-2, contact | VESD1 | -30 |  | 30 | kV | Contact discharge, per IEC61000-4-2 | 1 |
| ESD voltage per IEC61000-4-2, air | VESD2 | -30 |  | 30 | kV | Air discharge, per IEC61000-4-2 | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | °C |  | 1 |
| Reverse stand-off voltage (UNI, SMAJ6V8A) | VRWM |  | 5.8 |  | V | Printed as a single value in the stand-off voltage column | 2 |
| Typical junction capacitance | Cj |  | 390 |  | pF | at VR = 4 V, f = 1 MHz | 1 |
| Typical thermal resistance, junction to ambient | RθJA |  | 120 |  | °C/W | Mounted on 5 mm² copper pads to each terminal (Note 2) | 1 |

## CAD (KiCad official)

- Symbol: `SMAJ6V8A`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `smaj6v8a-etched.step` / `smaj6v8a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj6v8a.step` / `smaj6v8a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YFW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944579588460544) (3 pp, sha256 `d6b1dbdf3c3fb425`, retrieved 2026-10-14, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/smaj6v8a-datasheet.pdf)