# CMD240A

**Cmos(广东场效应半导体)** · IC · TO-252

CMD240A from Cmos(广东场效应半导体), in a TO-252. 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 | G | input | Gate; drive with VGS limited to ±20 V, threshold 1 V to 3 V at ID=250uA, with RDS(ON) specified at VGS=10 V and 4.5 V. |
| 2 | D | passive | Drain (also the mounting tab); rated for VDS of 40 V and continuous current of 80 A at TC=25℃. |
| 3 | S | passive | Source; carries up to 80 A continuous and is the body-diode anode side of the N-channel MOSFET. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Cmos(广东场效应半导体) |
| Package | TO-252 |
| Category |  |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-Source Breakdown Voltage | BVDSS | 40 |  |  | V | VGS=0V, ID=250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 3.3 | 4 | mΩ | VGS=10V, ID=30A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 4.5 | 5.5 | mΩ | VGS=4.5V, ID=20A | 2 |
| Gate Threshold Voltage | VGS(th) | 1 |  | 3 | V | VGS=VDS, ID=250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 1 | uA | VDS=30V, VGS=0V, TJ=25℃ | 2 |
| Gate-Source Leakage Current | IGSS |  |  | 100 | nA | VGS 20V, VDS=0V | 2 |
| Continuous Source Current | IS |  |  | 80 | A |  | 2 |
| Pulsed Source Current | ISM |  |  | 320 | A | VG=VD=0V, Force Current | 2 |
| Diode Forward Voltage | VSD |  | 0.84 | 1.3 | V | VGS=0V, IS=28 A, TJ=25℃ | 2 |
| Drain-Source Voltage | VDS |  |  | 40 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID@TC=25℃ |  |  | 80 | A | TC=25℃ | 1 |
| Continuous Drain Current | ID@TC=100℃ |  |  | 55 | A | TC=100℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 320 | A |  | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 780 | mJ | Test condition per note 1: VDD=35V, VGS=10V, L=1mH, IAS=39.5A | 1 |
| Total Power Dissipation | PD@TC=25℃ |  |  | 160 | W | TC=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient | RθJA |  |  | 54 | ℃/W |  | 1 |
| Thermal Resistance Junction-case | RθJC |  |  | 0.78 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `CMD240A`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `cmd240a-etched.step` / `cmd240a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cmd240a.step` / `cmd240a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Cmos(广东场效应半导体) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758072031055765504) (5 pp, sha256 `ee2e76f6a1713dc8`, retrieved 2026-10-20, 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/cmd240a-datasheet.pdf)