# CI25S170D3L2

**Tokmas** · SiC Diodes · TO-247-2

CI25S170D3L2 from Tokmas, in a TO-247-2. 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 | PIN 1 | passive | Terminal labelled PIN 1 on the TO-247-2 package; the datasheet does not state whether it is the anode or cathode, nor any electrical limit specific to this pin. |
| 2 | PIN 2 | passive | Terminal labelled PIN 2 on the TO-247-2 package; the datasheet does not state whether it is the anode or cathode, nor any electrical limit specific to this pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Tokmas |
| Package | TO-247-2 |
| Category | Silicon Carbide (SiC) Devices |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward Voltage | VF |  | 1.5 | 2.5 | V | IF = 25 A TJ=25°C | 2 |
| Forward Voltage | VF |  | 1.8 | 3 | V | IF = 25 A TJ=175°C | 2 |
| Reverse Current | IR |  | 20 | 120 | μA | VR = 1700 V TJ=25°C | 2 |
| Reverse Current | IR |  | 200 | 300 | μA | VR = 1700 V TJ=175°C | 2 |
| Repetitive Peak Reverse Voltage | VRRM |  |  | 2000 | V |  | 1 |
| DC Peak Reverse Voltage | VR |  |  | 1700 | V |  | 1 |
| Continuous Forward Current | IF |  |  | 70 | A | TC=25˚C | 1 |
| Continuous Forward Current | IF |  |  | 33.6 | A | TC=135˚C | 1 |
| Continuous Forward Current | IF |  |  | 25.6 | A | TC=150˚C | 1 |
| Repetitive Peak Forward Surge Current | IFRM |  |  | 99 | A | TC=25˚C, tP=10 ms, Half Sine Pulse | 1 |
| Repetitive Peak Forward Surge Current | IFRM |  |  | 57 | A | TC=110˚C, tP=10 ms, Half Sine Pulse | 1 |
| Non-Repetitive Forward Surge Current | IFSM |  |  | 117 | A | TC=25˚C, tP=10 ms, Half Sine Pulse | 1 |
| Non-Repetitive Forward Surge Current | IFSM |  |  | 88 | A | TC=110˚C, tP=10 ms, Half Sine Pulse | 1 |
| Power Dissipation | Ptot |  |  | 384 | W | TC=25˚C | 1 |
| Power Dissipation | Ptot |  |  | 167 | W | TC=110˚C | 1 |
| Operating Junction and Storage Temperature | TJ, Tstg | -55 |  | 175 | ˚C |  | 1 |
| TO-247 Mounting Torque |  |  |  | 8.8 | Nm | M3 Screw | 1 |
| Thermal Resistance from Junction to Case | RθJC |  | 0.39 |  | °C/W | Fig. 8 | 2 |

## CAD (KiCad official)

- Symbol: `CI25S170D3L2`
- Footprint: `Package_TO_SOT_THT:TO-247-2_Vertical`
- 3D model: TO-247-2 (KiCad packages3D, STEP)
- 3D model files: `ci25s170d3l2-etched.step` / `ci25s170d3l2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ci25s170d3l2.step` / `ci25s170d3l2.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/8590229835512373248) (5 pp, sha256 `58ea189f555389e5`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/ci25s170d3l2-datasheet.pdf)