# CI20S120C3

**Tokmas** · SiC Diodes · TO-220-2

CI20S120C3 from Tokmas, in a TO-220-2. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A | passive | Anode of the SiC Schottky barrier diode. Forward current up to 54.5A continuous at TC=25°C, VF typ. 1.5V at IF=20A, TJ=25°C. |
| 2 | K | passive | Cathode of the SiC Schottky barrier diode. Repetitive peak reverse voltage VRRM = 1200V; electrically common with the TO-220 metal tab/case. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Tokmas |
| Package | TO-220-2 |
| Category | Silicon Carbide (SiC) Devices |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `CI20S120C3`
- Footprint: `Package_TO_SOT_THT:TO-220-2_Vertical`
- 3D model: TO-220-2 (KiCad packages3D, STEP)
- 3D model files: `ci20s120c3-etched.step` / `ci20s120c3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ci20s120c3.step` / `ci20s120c3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Tokmas datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590207941543424000) (None pp, sha256 `56228300234994e4`, retrieved 2026-08-17, 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/ci20s120c3-datasheet.pdf)