# CDBM240L-HF

**Comchip** · Schottky Diodes · SOD-123

CDBM240L-HF from Comchip, in a SOD-123. 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 by the color band; the device is rated for VRRM of 40 V and IO of 2.0 A. |
| 2 | A | passive | Anode, the end opposite the color band; maximum forward voltage is 0.38 V at IF=2.0 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Comchip |
| Package | SOD-123 |
| 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 |
|---|---|---|---|---|---|---|---|
| Repetitive peak reverse voltage | VRRM |  |  | 40 | V |  | 1 |
| Continuous reverse voltage | VR |  |  | 40 | V |  | 1 |
| Max. RMS voltage | VRMS |  |  | 28 | V |  | 1 |
| Peak surge forward current | IFSM |  |  | 50 | A | 8.3ms single half sine-wave superimposed on rate load (JEDEC method) | 1 |
| Forward rectified current | IO |  |  | 2 | A |  | 1 |
| Max. thermal resistance, junction to ambient | RθJA |  |  | 70 | °C/W |  | 1 |
| Diode junction capacitance | CJ |  |  | 160 | pF |  | 1 |
| Storage temperature | TSTG | -65 |  | 175 | °C |  | 1 |
| Operating temperature | TJ | -55 |  | 125 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `CDBM240L-HF`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `cdbm240l-hf-etched.step` / `cdbm240l-hf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdbm240l-hf.step` / `cdbm240l-hf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Comchip datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603395622137847808) (4 pp, sha256 `af7ea0edf0199ff6`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cdbm240l-hf-datasheet.pdf)