CI05S120E3

@@ -0,0 +1,45 @@+# CI05S120E3++**Tokmas** · SiC Diodes · TO-252++CI05S120E3 from Tokmas, in a TO-252. 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 | NC | unconnected | No connection. Pin 1 of the TO-252 package is not internally bonded and should be left floating or tied to the cathode plane for mechanical support only. |+| 2 | K | passive | Cathode. Internally connected to the tab (pin 4). Reverse blocking up to VRRM = 1200 V; forward current up to IF = 5 A at TC = 161 °C. |+| 3 | A | passive | Anode. Forward voltage VF ≈ 1.4 V typ at IF = 5 A, TJ = 25 °C. Majority-carrier SiC Schottky junction, so no reverse recovery charge. |+| 4 | K | passive | Cathode / thermal tab. Electrically identical to pin 2; provides the primary heat-dissipation path to the PCB (RθJC = 1.5 °C/W). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Tokmas |+| Package | TO-252 |+| Category | Silicon Carbide (SiC) Devices |+| Pins | 4 |++## Ordering variants++Same part, different packaging or reel option.++- `CI05S120E3`++## CAD (KiCad official)++- Symbol: `CI05S120E3`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Tokmas datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590168719415672832) (5 pp, sha256 `7cf586a44ce51303`, 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/ci05s120e3-datasheet.pdf)

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