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Contents

README

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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)
  • 3D model files: ci05s120e3-etched.step / ci05s120e3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ci05s120e3.step / ci05s120e3.glb are the bare package body.

Provenance

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

  • Datasheet: Tokmas datasheet (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