# SMDJ9.0CA

**Shandong Jingdao Microelectronics** · TVS · SMC

SMDJ9.0CA from Shandong Jingdao Microelectronics, 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 | Cathode | passive | Cathode terminal per the PINNING table; the datasheet gives this pin for the Unipolar symbol and rates SMDJ9.0CA at a reverse stand-off voltage VRWM of 9.0 V. |
| 2 | Anode | passive | Anode terminal per the PINNING table; for SMDJ9.0CA the datasheet lists a minimum breakdown of 10 V and a maximum of 11.1 V at a test current of 1 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage (bidirectional) | VBR | 10 |  | 11.1 | V | @ IT = 1 mA | 2 |
| Max. Clamping Voltage | VC |  |  | 15.4 | V | @ IPP = 194.8 A | 2 |
| Max. Peak Pulse Current | IPP |  |  | 194.8 | A | 10/1000us waveform | 2 |
| Max. Reverse Leakage Current | IR |  |  | 10 | uA | @ VR = VRWM = 9.0 V | 2 |
| Peak Pulse Power Dissipation | PPPM |  |  | 3000 | W | TA=25°C, 10x1000us waveform (Fig.1) | 1 |
| Power Dissipation on infinite heat sink | PM(AV) |  |  | 6.5 | W | TA=50°C | 1 |
| Operating Junction and Storage Temperature Range | Tj, TSTG | -65 |  | 150 | °C |  | 1 |
| Reverse Stand-off Voltage | VRWM |  | 9 |  | V | Single stand-off value printed in table; no min/max given | 2 |
| Typical Thermal Resistance Junction to Lead | RθJL |  | 15 |  | ℃/W | Typical | 1 |
| Typical Thermal Resistance Junction to Ambient | RθJA |  | 75 |  | ℃/W | Typical; mounted on copper pad 0.31x0.31" (8.0x8.0mm) per Note 2 | 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 Maximum Ratings and Thermal Characteristics (TA=25℃ unless otherwise noted) | 1 |

## CAD (KiCad official)

- Symbol: `SMDJ9.0CA`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `smdj9-0ca-etched.step` / `smdj9-0ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smdj9-0ca.step` / `smdj9-0ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/smdj9-0ca-datasheet.pdf) (4 pp, sha256 `a89aa326add6c47a`, retrieved 2026-10-22, 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/smdj9-0ca-datasheet.pdf)