# KCD2908A

**KIA Semicon Tech** · MOSFETs · TO-252

KCD2908A from KIA Semicon Tech, 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 | Gate | input | Gate terminal of the N-channel MOSFET. Controls channel conduction via VGS; threshold voltage VGS(th) = 2.0-4.0 V (typ 3.0 V), absolute maximum VGS = ±20 V. Typical drive is VGS = 10 V for full enhancement (RDS(on) typ 4.3 mΩ). |
| 2 | Drain | passive | Drain terminal of the N-channel MOSFET, also connected to the TO-252 tab. Drain-to-source breakdown voltage BVDSS = 85 V min; continuous ID = 110 A at TC=25 °C (TO-252); pulsed IDP = 480 A. Body diode anode is Source, cathode is Drain (VSD typ 0.85 V @ 40 A). |
| 3 | Source | passive | Source terminal of the N-channel MOSFET and reference for VGS. Carries the drain current back to the load return; also forms the anode of the intrinsic body diode (reverse recovery time trr typ 68 ns, Qrr typ 260 nC). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KIA Semicon Tech |
| Package | TO-252 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `KCD2908A`
- `KCD2908AKCB2908A`

## CAD (KiCad official)

- Symbol: `KCD2908A`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `kcd2908a-etched.step` / `kcd2908a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kcd2908a.step` / `kcd2908a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KIA Semicon Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944474181947392) (None pp, sha256 `120b2a37db0c934e`, 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/kcd2908a-datasheet.pdf)