# WSD6040DN56

**Winsok Semicon** · MOSFETs · DFN-8-EP(6.1x5.2)

WSD6040DN56 from Winsok Semicon, in a DFN-8-EP(6.1x5.2). 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 | S | passive | Source of the N-channel MOSFET, pins 1, 2 and 3 are tied together; the datasheet shows them as the source terminal. |
| 2 | S | passive | Source of the N-channel MOSFET, pins 1, 2 and 3 are tied together; the datasheet shows them as the source terminal. |
| 3 | S | passive | Source of the N-channel MOSFET, pins 1, 2 and 3 are tied together; the datasheet shows them as the source terminal. |
| 4 | G | input | Gate of the N-channel MOSFET, rated for VGS of ±20 V with a typical threshold of 1.6 V. |
| 5 | D | passive | Drain of the N-channel MOSFET, pins 5 to 8 are tied together; VDS is rated at 60 V. |
| 6 | D | passive | Drain of the N-channel MOSFET, pins 5 to 8 are tied together; VDS is rated at 60 V. |
| 7 | D | passive | Drain of the N-channel MOSFET, pins 5 to 8 are tied together; VDS is rated at 60 V. |
| 8 | D | passive | Drain of the N-channel MOSFET, pins 5 to 8 are tied together; VDS is rated at 60 V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Winsok Semicon |
| Package | DFN-8-EP(6.1x5.2) |
| Category | Transistors/Thyristors |
| Pins | 9 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Gate Threshold Voltage | VGS(TH) | 1 | 1.6 | 2.5 | V | VGS = VDS, IDS = 250µA | 2 |
| Gate Leakage Current | IGSS | -100 |  | 100 | nA | VGS = ±20V, VDS = 0V | 2 |
| Drain-Source Breakdown Voltage | V(BR)DSS | 60 |  |  | V | VGS = 0V, ID = 250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  | 1 |  | µA | VDS = 48 V, VGS = 0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 30 | µA | VDS = 48 V, VGS = 0V, TJ=85°C | 2 |
| Drain-Source On-state Resistance | RDS(on) |  | 14 | 17.5 | mΩ | VGS = 10V, ID = 25A | 2 |
| Drain-Source On-state Resistance | RDS(on) |  | 19 | 22 | mΩ | VGS = 4.5V, ID = 20A | 2 |
| Diode Forward Voltage | VSD |  | 0.8 | 1.3 | V | ISD = 20A, VGS=0V | 2 |
| Drain-Source Voltage | VDS |  |  | 60 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 36 | A | TC=25°C | 1 |
| Continuous Drain Current | ID |  |  | 22 | A | TC=100°C | 1 |
| Continuous Drain Current | ID |  |  | 8.4 | A | TA=25°C | 1 |
| Continuous Drain Current | ID |  |  | 6.8 | A | TA=100°C | 1 |
| Pulsed Drain Current | IDM |  |  | 140 | A |  | 1 |
| Avalanche Current | IAS |  |  | 16 | A | Single pulse L=0.5mH | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 64 | mJ | Single pulse L=0.5mH | 1 |
| Diode Continuous Forward Current | IS |  |  | 18 | A |  | 1 |
| Maximum Power Dissipation | PD |  |  | 37.8 | W | TC=25°C | 1 |
| Maximum Power Dissipation | PD |  |  | 15.1 | W | TC=100°C | 1 |
| Maximum Power Dissipation | PD |  |  | 2.08 | W | TA=25°C | 1 |
| Maximum Power Dissipation | PD |  |  | 1.33 | W | TA=70°C | 1 |
| Maximum Junction Temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction to Ambient | RθJA |  |  | 60 | ℃/W | Steady state; surface mounted on 1in² pad area | 1 |
| Thermal Resistance Junction to Case | RθJC |  |  | 3.3 | ℃/W | Steady state | 1 |

## CAD (KiCad official)

- Symbol: `WSD6040DN56`
- Footprint: `Package_DFN_QFN:DFN-S-8-1EP_6x5mm_P1.27mm`
- 3D model: DFN-8-EP(6.1x5.2) (KiCad packages3D, STEP)
- 3D model files: `wsd6040dn56-etched.step` / `wsd6040dn56-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wsd6040dn56.step` / `wsd6040dn56.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Winsok Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588915914763223040) (6 pp, sha256 `338ffdd02eb6a03e`, retrieved 2026-10-09, 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/wsd6040dn56-datasheet.pdf)