# SJD12C90L01

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

SJD12C90L01 from Liown, 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 | A1 | passive | Bidirectional TVS terminal with 90V reverse stand-off, 100V to 111V breakdown at 1mA and 146V maximum clamping at 1.4A peak pulse current; interchangeable with the other terminal. |
| 2 | A2 | passive | Bidirectional TVS terminal with 90V reverse stand-off, 100V to 111V breakdown at 1mA and 146V maximum clamping at 1.4A peak pulse current; interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Liown |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (min) | VB | 100 |  |  | V | @IT test current 1 mA (bidirectional C variant) | 3 |
| Breakdown voltage (max) | VB |  |  | 111 | V | @IT test current 1 mA (bidirectional C variant) | 3 |
| Maximum clamping voltage | VC |  |  | 146 | V | @IPP peak pulse current 1.4 A | 3 |
| Peak pulse power dissipation at 8/20μs waveform | PPPM |  |  | 1000 | W | tp=8/20μs waveform | 1 |
| Peak pulse power dissipation at 10/1000μs waveform | PPPM |  |  | 200 | W | 10/1000μs waveform (Note 1, Note 2, Fig.1) | 1 |
| Steady state power dissipation | PM(AV) |  |  | 1 | W | at TL=75℃ (Fig.5) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Typical thermal resistance junction to lead | RθJL |  | 100 |  | ℃/W |  | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 220 |  | ℃/W |  | 1 |
| Reverse stand-off voltage | VR |  | 90 |  | V |  | 3 |
| Reverse leakage current | IR |  | 1 |  | μA | @VR reverse stand-off voltage (90 V) | 3 |

## 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. Each terminal is surface Mounted on the 5.0mm×5.0mm (0.03mm thick) copper pads. | 1 |

## CAD (KiCad official)

- Symbol: `SJD12C90L01`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `sjd12c90l01-etched.step` / `sjd12c90l01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sjd12c90l01.step` / `sjd12c90l01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Liown datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590283536453300224) (7 pp, sha256 `2af73f617a9b968b`, retrieved 2026-10-17, 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/sjd12c90l01-datasheet.pdf)