# SJD12A33L01

**Brightking** · ESD And Surge Protection (TVS/ESD) · SOD-123

SJD12A33L01 from Brightking, in a SOD-123. 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 (marked-band end) of the unidirectional TVS diode, connected to the protected I/O line, with VRWM 33.0V, VBR 36.70-40.60V at 1mA, and VC 53.3V at 3.8A IPP. |
| 2 | A | passive | Anode of the unidirectional TVS diode, normally tied to ground, with the device rated for ±8kV contact and ±15kV air ESD per IEC61000-4-2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| Package | SOD-123 |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak pulse power (tp=8/20μs waveform) | PPP |  |  | 1000 | W | tp=8/20μs waveform | 1 |
| Peak pulse power (tp=10/1000μs waveform) | PPP |  |  | 200 | W | tp=10/1000μs waveform | 1 |
| ESD voltage (Contact discharge) | VESD | -8 |  | 8 | kV | Contact discharge | 1 |
| ESD voltage (Air discharge) | VESD | -15 |  | 15 | kV | Air discharge | 1 |
| Storage & operating temperature range | TSTG, TJ | -55 |  | 150 | ℃ |  | 1 |
| Breakdown voltage (min) | VBR | 36.7 |  | 40.6 | V | TJ=25℃; @IT test current 1 mA | 2 |
| Maximum clamping voltage | VC |  |  | 53.3 | V | TJ=25℃; @IPP 3.8 A | 2 |
| Reverse leakage current | IR |  |  | 1 | μA | TJ=25℃; @VRWM | 2 |
| Reverse stand-off voltage | VRWM |  | 33 |  | V |  | 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 |  | tin | ● Lead Free/RoHS compliant ● Solder reflow temperature: Pure Tin-Sn, 260~270℃ | 1 |

## CAD (KiCad official)

- Symbol: `SJD12A33L01`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `sjd12a33l01-etched.step` / `sjd12a33l01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sjd12a33l01.step` / `sjd12a33l01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Brightking datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911119834890240) (6 pp, sha256 `056fa05fb4417906`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/sjd12a33l01-datasheet.pdf)