# SMAJ170A

**RUILON(Shenzhen Ruilongyuan Elec)** · TVS · DO-214AC(SMA)

SMAJ170A from RUILON(Shenzhen Ruilongyuan Elec), 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 | RUILON(Shenzhen Ruilongyuan Elec) |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse Stand-Off Voltage (UNI) | VRWM |  | 170 |  | V |  | 3 |
| Breakdown Voltage (UNI), min | VBR | 189 |  |  | V | IT = 1 mA | 3 |
| Breakdown Voltage (UNI), max | VBR |  |  | 209 | V | IT = 1 mA | 3 |
| Max. Clamping Voltage (10/1000µs) | VC |  |  | 275 | V | @IPP = 1.5 A, 10/1000µs | 3 |
| Max. Peak Pulse Current (10/1000µs) | IPP |  |  | 1.5 | A | 10/1000µs | 3 |
| Reverse Leakage Current | IR |  |  | 1 | µA | @VRWM | 3 |
| Peak Pulse Power Dissipation | PPP |  |  | 400 | W | TA=25°C, 10/1000µs waveform (Fig.2), non-repetitive, derated above TA=25°C per Fig.3 | 1 |
| Power Dissipation on Infinite Heat Sink | PD |  |  | 3 | W | TL=75°C (Fig.6) | 1 |
| Peak Forward Surge Current | IFSM |  |  | 60 | A | 8.3ms single half sine wave, unidirectional device only | 1 |
| Operating Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |

## 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 |
|---|---|---|---|---|
| contacts |  | tin |  Matte tin lead-free Plated  Halogen free and RoHS compliant | 1 |

## CAD (KiCad official)

- Symbol: `SMAJ170A`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: DO-214AC(SMA) (KiCad packages3D, STEP)
- 3D model files: `smaj170a-etched.step` / `smaj170a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj170a.step` / `smaj170a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RUILON(Shenzhen Ruilongyuan Elec) datasheet](docs/smaj170a-datasheet.pdf) (7 pp, sha256 `a4cc8e3ec410edc2`, retrieved 2026-10-21, 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/smaj170a-datasheet.pdf)