# 2SK2503-VB

**VBsemi Elec** · MOSFETs · TO-252

2SK2503-VB from VBsemi Elec, in a TO-252. 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 | G | input | Gate. Insulated gate control terminal of the N-channel MOSFET; VGS(th) = 1.0 to 3.0 V, VGS(max) = ±20 V. Drives the channel between drain and source. |
| 2 | D | passive | Drain. Power drain terminal of the N-channel MOSFET; VDS(max) = 60 V, ID = 18 A continuous at TC = 25 °C. Electrically connected to the TO-252 tab (heat slug). |
| 3 | S | passive | Source. Power source terminal of the N-channel MOSFET; carries the drain current returned to the circuit reference. Body diode anode is internally tied to source (VSD ≈ 0.8 V typ at IF = 5.2 A). |
| 4 | D | passive | Drain (exposed tab / heat slug). Electrically identical to pin 2; provides the primary thermal path (RthJC = 3 °C/W) for soldering to a PCB copper pour. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | VBsemi Elec |
| Package | TO-252 |
| Category | Transistors/Thyristors |
| Pins | 4 |

## Ordering variants

Same part, different packaging or reel option.

- `2SK2503-VB`

## CAD (KiCad official)

- Symbol: `2SK2503-VB`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `2sk2503-vb-etched.step` / `2sk2503-vb-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sk2503-vb.step` / `2sk2503-vb.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [VBsemi Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603048171308806144) (None pp, sha256 `7b8d6207336b4f54`, 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/2sk2503-vb-datasheet.pdf)