# G50N03D5

**GOFORD** · MOSFETs · DFN-8L(5x6)

G50N03D5 from GOFORD, in a DFN-8L(5x6). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | S | passive | Source terminal of the N-channel MOSFET. Pins 1, 2, and 3 are internally tied together as the source connection; typically bonded to the ground/return rail in low-side switching. Body diode anode. |
| 2 | S | passive | Source terminal (parallel connection with pins 1 and 3) to share current and reduce package resistance/inductance. Rated for ID = 50A continuous, IDM = 200A pulsed. |
| 3 | S | passive | Source terminal (parallel connection with pins 1 and 2). Body-diode anode; VSD ≤ 1.2V at ISD = 20A. |
| 4 | G | input | Gate terminal. Controls the channel via VGS; threshold VGS(th) = 1.1-2.4V (typ 1.6V). Absolute maximum VGS = ±20V. Total gate charge Qg ≈ 38.4nC at VGS = 10V. |
| 5 | D | passive | Drain terminal. Pins 5, 6, 7, 8 (and the exposed thermal pad) are internally the drain connection for the N-channel MOSFET. VDS rating = 30V. Body-diode cathode. |
| 6 | D | passive | Drain terminal (parallel with pins 5, 7, 8 and exposed pad). Used to carry drain current and conduct heat to the PCB. |
| 7 | D | passive | Drain terminal (parallel with pins 5, 6, 8 and exposed pad). Continuous drain current ID = 50A at TC = 25°C. |
| 8 | D | passive | Drain terminal (parallel with pins 5, 6, 7 and exposed thermal pad). All drain leads plus the pad should be soldered together to a copper plane to meet the 4.9°C/W junction-to-case thermal spec. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GOFORD |
| Package | DFN-8L(5x6) |
| Category | Transistors/Thyristors |
| Pins | 8 |

## Ordering variants

Same part, different packaging or reel option.

- `G50N03D5`

## 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 Voltage | VDS |  |  | 30 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 50 | A |  | 1 |
| Pulsed Drain Current | IDM |  |  | 200 | A | note 1 | 1 |
| Power Dissipation | PD |  |  | 25.5 | W |  | 1 |
| Single pulse avalanche energy | EAS |  |  | 81 | mJ | note 2 | 1 |
| Operating Junction and Storage Temperature Range | TJ, Tstg | -55 |  | 150 | ºC |  | 1 |
| Thermal Resistance, Junction-to-Ambient | RthJA |  |  | 49.8 | ºC/W |  | 1 |
| Maximum Junction-to-Case | RthJC |  |  | 4.9 | ºC/W |  | 1 |
| Drain-Source Breakdown Voltage | V(BR)DSS | 30 |  |  | V | VGS = 0V, ID = 250µA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | μA | VDS = 30 V, VGS = 0V | 2 |
| Gate-Source Leakage | IGSS | -100 |  | 100 | nA | VGS = ±20V | 2 |
| Gate-Source Threshold Voltage | VGS(th) | 1.1 | 1.6 | 2.4 | V | VDS = VGS, ID = 250µA | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 3.2 | 4 | mΩ | VGS = 10V, ID = 20A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 5.9 | 7 | mΩ | VGS = 4.5V, ID = 20A | 2 |
| Continuous Body Diode Current | IS |  |  | 50 | A | TC = 25ºC | 2 |
| Body Diode Voltage | VSD |  |  | 1.2 | V | TJ = 25ºC, ISD = 20A, VGS = 0V | 2 |

## CAD (KiCad official)

- Symbol: `G50N03D5`
- Footprint: `Package_DFN_QFN:DFN-S-8-1EP_6x5mm_P1.27mm`
- 3D model: DFN-8L(5x6) (KiCad packages3D, STEP)
- 3D model files: `g50n03d5-etched.step` / `g50n03d5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `g50n03d5.step` / `g50n03d5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GOFORD datasheet](https://www.gofordsemi.com/upload/cn/propdf/G50N03D5.pdf) (None pp, sha256 `731b3d4e30fe7344`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/g50n03d5-datasheet.pdf)