# SMAJ54CA

**Shandong Jingdao Microelectronics** · Diodes - Fast Recovery Rectifiers · SMA

SMAJ54CA from Shandong Jingdao Microelectronics, 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 | Cathode | passive | Pin 1 is labelled Cathode in the datasheet PINNING table, which is given for the unipolar symbol; the datasheet states no voltage or current limits for this pin individually, only the device ratings of 400 W peak pulse power and -65 to +150 °C operating junction and storage temperature. |
| 2 | Anode | passive | Pin 2 is labelled Anode in the datasheet PINNING table, which is given for the unipolar symbol; the datasheet states no voltage or current limits for this pin individually, only the device ratings of 400 W peak pulse power and -65 to +150 °C operating junction and storage temperature. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SMA |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation | PPPM |  |  | 400 | W | TA=25°C, 10/1000 µs waveform (Note 1,2,4) | 1 |
| Peak Forward Surge Current | IFSM |  |  | 60 | A | 8.3 ms single half sine-wave superimposed on rated load (JEDEC method) (Note 3) | 1 |
| ESD Voltage per IEC6100-4-2, Contact | VESD1 |  |  | 30 | kV | Contact discharge | 1 |
| ESD Voltage per IEC6100-4-2, Air | VESD2 |  |  | 30 | kV | Air discharge | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA |  | 30 |  | °C/W | Mounted on 5mm copper pads to each terminal (Note 2) | 1 |
| Operating Junction and Storage Temperature Range | Tj, Tstg | -65 |  | 150 | °C |  | 1 |
| Reverse Stand-off Voltage | VRRM |  | 54 |  | V |  | 2 |
| Breakdown Voltage | VBR | 60 |  |  | V | Test current IT = 1 mA | 2 |
| Reverse Leakage Current | IR |  |  | 1 | μA | @ VRRM | 2 |
| Max. Clamp Voltage | VC |  |  | 87.1 | V | @ IPP = 4.6 A | 2 |
| Peak Pulse Current | IPP |  |  | 4.6 | A |  | 2 |

## 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 |  | 2. Mounted on 5mm copper pads to each terminal. | 1 |

## CAD (KiCad official)

- Symbol: `SMAJ54CA`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `smaj54ca-etched.step` / `smaj54ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj54ca.step` / `smaj54ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/smaj54ca-datasheet.pdf) (4 pp, sha256 `8f775ce72285b788`, retrieved 2026-10-21, 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/smaj54ca-datasheet.pdf)