# CURB204-G

**Comchip** · Diodes - Fast Recovery Rectifiers · DO-214AA(SMB)

CURB204-G from Comchip, in a DO-214AA(SMB). 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 | K | passive | Cathode, the end marked with the color band; CURB204-G blocks 400 V DC reverse voltage (VRRM 400 V) with 2.0 A average forward current. |
| 2 | A | passive | Anode terminal; CURB204-G has maximum forward voltage of 1.7 V at 2.0 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Comchip |
| Package | DO-214AA(SMB) |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Max. Repetitive peak reverse voltage | VRRM |  |  | 400 | V | TA=25°C | 1 |
| Max. DC blocking voltage | VDC |  |  | 400 | V | TA=25°C | 1 |
| Max. RMS voltage | VRMS |  |  | 280 | V | TA=25°C | 1 |
| Max. Average forward current | IO |  |  | 2 | A | TA=25°C | 1 |
| Max. Instantaneous forward voltage | VF |  |  | 1 | V | at 2.0A, TA=25°C | 1 |
| Reverse recovery time | Trr |  |  | 50 | nS | IF=0.5A, IR=1.0A, IRR=0.25A (RG1 circuit) | 1 |
| Max. DC reverse current | IR |  |  | 5 | μA | TA=25°C | 1 |
| Operating temperature range | TJ | -55 |  | 150 | °C |  | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `CURB204-G`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
- 3D model files: `curb204-g-etched.step` / `curb204-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `curb204-g.step` / `curb204-g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Comchip datasheet](docs/curb204-g-datasheet.pdf) (4 pp, sha256 `fb628b4d5f3e69fe`, retrieved 2026-10-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/curb204-g-datasheet.pdf)