# SMCJ15AX

**Shenzhen JingYang** · ESD And Surge Protection (TVS/ESD) · SMC

SMCJ15AX from Shenzhen JingYang, in a SMC. 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 terminal, marked by the cathode band on the unidirectional SMCJ15A (VRWM 15V, VBR 16.7-19.2V at 1.0mA, VC 24.4V at 61.5A IPP). |
| 2 | A | passive | Anode terminal at the end opposite the cathode band of the unidirectional SMCJ15A (1500W peak pulse power, 10/1000us). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JingYang |
| Package | SMC |
| 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 | VRWM |  | 15 |  | V | SMCJ15A | 2 |
| Breakdown Voltage | VBR | 16.7 |  | 19.2 | V | @ IT = 1.0 mA | 2 |
| Test Current | IT |  | 1 |  | mA |  | 2 |
| Maximum Clamping Voltage | VC |  |  | 24.4 | V | @ IPP = 61.5 A | 2 |
| Peak Pulse Current | IPP |  |  | 61.5 | A | 10/1000 us waveform | 2 |
| Reverse Leakage | IR |  |  | 5 | uA | @ VRWM | 2 |
| Peak Pulse Power Dissipation | PPPM | 1500 |  |  | W | 10/1000 us waveform, TA=25°C | 1 |
| Peak Forward Surge Current | IFSM |  |  | 200 | A | 8.3ms single half sine-wave, JEDEC method | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| Peak Reflow Temperature | TP |  |  | 260 | °C | Lead-free reflow, do not exceed 260°C | 7 |

## 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 | Copper |  | (0.03mm thick) Copper Pads to each terminal. | 1 |

## CAD (KiCad official)

- Symbol: `SMCJ15AX`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `smcj15ax-etched.step` / `smcj15ax-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smcj15ax.step` / `smcj15ax.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JingYang datasheet](docs/smcj15ax-datasheet.pdf) (7 pp, sha256 `5c66c31e0538ab00`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/smcj15ax-datasheet.pdf)