# SMB15J13CAX

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

SMB15J13CAX from Shenzhen JingYang, in a SMB. 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 | Shenzhen JingYang |
| Package | SMB |
| 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 | VBR | 14.4 |  | 15.9 | V | IT = 1 mA test current | 2 |
| Max clamping voltage | VC |  |  | 21.5 | V | @ IPP = 69.8 A | 2 |
| Max peak pulse current | IPP |  |  | 69.8 | A | 10/1000 us waveform | 2 |
| Max reverse leakage current | IR |  |  | 1 | uA | @ VRWM | 2 |
| Peak pulse power dissipation | PPP |  |  | 1500 | W | 10/1000 us waveform (1) | 1 |
| Power dissipation on infinite heatsink | PD |  |  | 5 | W | TL = 75 C, infinite heatsink | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Reverse stand-off voltage | VRWM |  | 13 |  | V |  | 2 |

## CAD (KiCad official)

- Symbol: `SMB15J13CAX`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `smb15j13cax-etched.step` / `smb15j13cax-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smb15j13cax.step` / `smb15j13cax.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JingYang datasheet](docs/smb15j13cax-datasheet.pdf) (3 pp, sha256 `1be7580cabb4aa00`, 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/smb15j13cax-datasheet.pdf)