# CMU6780A

**Cmos** · MOSFETs · TO-251

CMU6780A from Cmos, in a TO-251. 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; controls the channel, with VGS rated ±20 V maximum and threshold of 1 V to 3 V at 250 µA. |
| 2 | D | passive | Drain; rated 30 V VDS with 50 A continuous and 150 A pulsed drain current, also connected to the tab. |
| 3 | S | passive | Source; main current return of the N-channel MOSFET, with 50 A continuous source current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Cmos |
| Package | TO-251 |
| Category | Triode/MOS Tube/Transistor |
| 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 | 30 |  |  | V | VGS=0V, ID=250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 9 | mΩ | VGS=10V, ID=20A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 13.5 | mΩ | VGS=4.5V, ID=10A | 2 |
| Gate Threshold Voltage | VGS(th) | 1 |  | 3 | V | VDS=VGS, ID=250μA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 1 | uA | VDS=24V, VGS=0V, TJ=25℃ | 2 |
| Gate-Source Leakage Current | IGSS |  |  | 100 | nA | VGS 20V, VDS=0V | 2 |
| Continuous Source Current | IS |  |  | 50 | A |  | 2 |
| Pulsed Source Current | ISM |  |  | 150 | A | VG=VD=0V, Force Current | 2 |
| Diode Forward Voltage | VSD |  |  | 1.3 | V | VGS=0V, IS=5A, TJ=25℃ | 2 |
| Drain-Source Voltage | VDS |  |  | 30 | V |  | 1 |
| Gate-Source Voltage | VGS |  |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 50 | A | TC=25 | 1 |
| Pulsed Drain Current | IDM |  |  | 150 | A |  | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 780 | mJ |  | 1 |
| Total Power Dissipation | PD |  |  | 55 | W | TC=25 | 1 |
| Storage Temperature Range | TSTG | -55 |  | 175 |  |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 175 |  |  | 1 |
| Thermal Resistance Junction-ambient | R JA |  |  | 75 | /W |  | 1 |
| Thermal Resistance Junction-Case | R JC |  |  | 2.7 | /W |  | 1 |

## CAD (KiCad official)

- Symbol: `CMU6780A`
- Footprint: `Package_TO_SOT_THT:TO-251-3_Vertical`
- 3D model: TO-251 (KiCad packages3D, STEP)
- 3D model files: `cmu6780a-etched.step` / `cmu6780a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cmu6780a.step` / `cmu6780a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Cmos datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590457941574266880) (5 pp, sha256 `bc4f9f3d3bb39b07`, retrieved 2026-11-07, 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/cmu6780a-datasheet.pdf)