# SMAJ24CAX

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

SMAJ24CAX from Shenzhen JingYang, in a 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 | Shenzhen JingYang |
| Package | 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 (bidirectional, SMAJ24CA) | VBR | 26.7 |  | 29.5 | V | @ IT 1 mA | 3 |
| Maximum reverse voltage at IRSM (clamping voltage) | VRSM |  |  | 38.9 | V | at IRSM | 3 |
| Maximum reverse surge current | IRSM |  |  | 10.3 | A |  | 3 |
| Maximum leakage current | IR |  |  | 0.5 | uA |  | 3 |
| Peak power dissipation | PPK |  |  | 400 | W | TA = 25 C, TP = 1 ms (Note 1) | 1 |
| Peak forward surge current | IFSM |  |  | 40 | A | 8.3 ms single half sine-wave @ TJ = 25 C (Note 2) | 1 |
| Steady state power dissipation | PM(AV) |  |  | 1 | W | at TL = 120 C | 1 |
| Maximum instantaneous forward voltage | VF |  |  | 3 | V | at 16 A (Note 2, 3) | 1 |
| Operating temperature range | TJ | -55 |  | 175 | C |  | 1 |
| Storage temperature range | TSTG | -55 |  | 175 | C |  | 1 |
| Working peak reverse voltage (unidirectional/bidirectional table value) | VRWM |  | 24 |  | V |  | 3 |

## CAD (KiCad official)

- Symbol: `SMAJ24CAX`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `smaj24cax-etched.step` / `smaj24cax-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj24cax.step` / `smaj24cax.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JingYang datasheet](docs/smaj24cax-datasheet.pdf) (4 pp, sha256 `0ece3d1617f2fa43`, retrieved 2026-10-22, 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/smaj24cax-datasheet.pdf)