# SMCJ190CA

**Liown** · ESD And Surge Protection (TVS/ESD) · SMC(DO-214AB)

SMCJ190CA from Liown, in a SMC(DO-214AB). 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 | Terminal 1 | passive | Bidirectional (CA) TVS terminal with no polarity; the datasheet's bi-directional symbol shows two unlabeled, interchangeable terminals, with 190V reverse stand-off and 308V max clamping at 4.8A IPP. |
| 2 | Terminal 2 | passive | Bidirectional (CA) TVS terminal with no polarity; the datasheet's bi-directional symbol shows two unlabeled, interchangeable terminals, with 190V reverse stand-off and 308V max clamping at 4.8A IPP. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Liown |
| Package | SMC(DO-214AB) |
| 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 dissipation | PPPM |  |  | 1500 | W | 10/1000μs waveform (Note1, Note2, Fig.1) | 1 |
| Steady state power dissipation | PM(AV) |  |  | 6.5 | W | TA=50℃ (Fig.5) | 1 |
| Peak forward surge current | IFSM |  |  | 200 | A | 8.3ms single half sine-wave superimposed on rated load, (JEDEC Method) (Note3, Fig.6) | 1 |
| Operating junction and storage temperature range | TJ、TSTG | -55 |  | 150 | ℃ |  | 1 |
| Typical thermal resistance junction to lead | RθJL |  | 15 |  | ℃/W | Typical | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 75 |  | ℃/W | Typical | 1 |
| Reverse stand-off voltage (bidirectional CA) | VR |  |  | 190 | V | SMCJ190CA row of Electrical Characteristics table | 3 |
| Breakdown voltage (bidirectional CA) | VB | 211 |  | 233 | V | @IT 1 mA | 3 |
| Maximum clamping voltage (bidirectional CA) | VC |  |  | 308 | V | @IPP 4.8 A | 3 |
| Reverse leakage current (bidirectional CA) | IR |  |  | 1 | μA | @VR | 3 |

## CAD (KiCad official)

- Symbol: `SMCJ190CA`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files: `smcj190ca-etched.step` / `smcj190ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smcj190ca.step` / `smcj190ca.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/8590929133982085120) (6 pp, sha256 `5aab551fa23e27ab`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/smcj190ca-datasheet.pdf)