# GC4D20120H

**SUPSiC** · SiC Diodes · TO-247-2

GC4D20120H from SUPSiC, 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 labeled PIN 1 on the TO-247-2 package; the datasheet does not state whether it is the anode or the cathode, and gives no electrical limit for this terminal alone. |
| 2 | PIN 2 | passive | Terminal labeled PIN 2 on the TO-247-2 package; the datasheet does not state whether it is the anode or the cathode, and gives no electrical limit for this terminal alone. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SUPSiC |
| 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 (TJ=25°C) | VF |  | 1.5 | 2.2 | V | IF = 20 A, TJ = 25°C | 2 |
| Forward Voltage (TJ=175°C) | VF |  | 1.8 | 3 | V | IF = 20 A, TJ = 175°C | 2 |
| Reverse Current (TJ=25°C) | IR |  | 35 | 65 | μA | VR = 1200 V, TJ = 25°C | 2 |
| Reverse Current (TJ=175°C) | IR |  | 200 | 400 | μA | VR = 1200 V, TJ = 175°C | 2 |
| Repetitive Peak Reverse Voltage | VRRM |  |  | 1200 | V |  | 1 |
| Surge Peak Reverse Voltage | VRSM |  |  | 1300 | V |  | 1 |
| DC Peak Reverse Voltage | VR |  |  | 1200 | V |  | 1 |
| Continuous Forward Current | IF |  |  | 54 | A | TC=25°C | 1 |
| Continuous Forward Current | IF |  |  | 26 | A | TC=135°C | 1 |
| Continuous Forward Current | IF |  |  | 20 | A | TC=156°C | 1 |
| Repetitive Peak Forward Surge Current | IFRM |  |  | 86 | A | TC=25°C, tP=10 ms, Half Sine Pulse | 1 |
| Repetitive Peak Forward Surge Current | IFRM |  |  | 56 | A | TC=110°C, tP=10 ms, Half Sine Pulse | 1 |
| Non-Repetitive Forward Surge Current | IFSM |  |  | 130 | A | TC=25°C, tP=10 ms, Half Sine Pulse | 1 |
| Non-Repetitive Forward Surge Current | IFSM |  |  | 104 | A | TC=110°C, tP=10 ms, Half Sine Pulse | 1 |
| Non-Repetitive Peak Forward Current | IF,Max |  |  | 1150 | A | TC=25°C, tP=10 ms, Pulse | 1 |
| Non-Repetitive Peak Forward Current | IF,Max |  |  | 950 | A | TC=110°C, tP=10 ms, Pulse | 1 |
| Power Dissipation | Ptot |  |  | 246 | W | TC=25°C | 1 |
| Power Dissipation | Ptot |  |  | 106.5 | W | TC=110°C | 1 |
| Diode dV/dt ruggedness | dV/dt |  |  | 200 | V/ns | VR=0-960V | 1 |
| i2t value | ∫i2dt |  |  | 84.5 | A2s | TC=25°C, tP=10 ms | 1 |
| i2t value | ∫i2dt |  |  | 54 | A2s | TC=110°C, tP=10 ms | 1 |
| Operating Junction and Storage Temperature | TJ, Tstg | -55 |  | 175 | °C |  | 1 |
| TO-247 Mounting Torque |  |  |  | 1 | Nm | M3 Screw | 1 |
| TO-247 Mounting Torque |  |  |  | 8.8 | lbf-in | 6-32 Screw | 1 |
| Thermal Resistance, Junction to Case | RθJC |  | 0.61 |  | °C/W | Fig. 9 | 2 |

## CAD (KiCad official)

- Symbol: `GC4D20120H`
- Footprint: `Package_TO_SOT_THT:TO-247-2_Vertical`
- 3D model: TO-247-2 (KiCad packages3D, STEP)
- 3D model files: `gc4d20120h-etched.step` / `gc4d20120h-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gc4d20120h.step` / `gc4d20120h.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SUPSiC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756399670220603392) (6 pp, sha256 `a69603cec69350ec`, retrieved 2026-10-15, 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/gc4d20120h-datasheet.pdf)