# KCD3008A

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

KCD3008A from KIA Semicon Tech, in a TO-252. 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 | Gate | input | Gate terminal of the MOSFET; the datasheet limits gate-source voltage VGS to ±20 V. |
| 2 | Drain | passive | Drain terminal; the TO-252 variant is rated VDSS 85 V with continuous drain current of 100 A at TC=25 ºC (silicon limited) and 80 A (package limited). |
| 3 | Source | passive | Source terminal, the reference for the 85 V drain-source voltage rating and the ±20 V gate-source voltage limit. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KIA Semicon Tech |
| Package | TO-252 |
| Category | Transistors/Thyristors |
| 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 | 85 | 90 |  | V | VGS=0V,ID=250μA | 3 |
| Gate threshold voltage | VGS(th) | 2 | 3 | 4 | V | VDS=VGS, ID=250μA, Tj=25 ºC | 3 |
| Gate leakage current | IGSS |  |  | 100 | nA | VGS=20V,VDS=0V | 3 |
| Drain-source on-resistance | RDS(on) |  | 4.5 | 5.5 | mΩ | VGS=10V,ID=50A, Tj=25 ºC | 3 |
| Zero gate voltage drain current | IDSS |  |  | 1 | μA | VDS=85V, VGS=0V, Tj=25 ºC | 3 |
| Diode forward voltage | VSD |  | 0.85 | 1.4 | V | VGS=0V,ISD=50A | 3 |
| Drain-to-source voltage | VDSS |  |  | 85 | V |  | 2 |
| Continuous drain current (silicon limited) | ID |  |  | 100 | A | TC=25 ºC (Silicon limited) | 2 |
| Continuous drain current (package limited) | ID |  |  | 80 | A | TC=25 ºC (Package limited) | 2 |
| Continuous drain current (silicon limited) | ID |  |  | 60 | A | TC=100 ºC (Silicon limited) | 2 |
| Pulsed drain current | IDP |  |  | 480 | A | TC = 25°C, tp limited by Tjmax | 2 |
| Avalanche energy, single pulse | EAS |  |  | 560 | mJ | L=0.5mH, Rg=25Ω | 2 |
| Gate-source voltage | VGS | -20 |  | 20 | V |  | 2 |
| Power dissipation | Ptot |  |  | 85 | W | TC = 25 ºC | 2 |
| Junction and storage temperature range | TJ, TSTG | -55 |  | 175 | ºC |  | 2 |
| Thermal resistance, junction-ambient | RθJA |  | 60 |  | ºC/W |  | 2 |
| Thermal resistance, junction-case | RθJC |  | 1.76 |  | ºC/W |  | 2 |

## CAD (KiCad official)

- Symbol: `KCD3008A`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `kcd3008a-etched.step` / `kcd3008a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kcd3008a.step` / `kcd3008a.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/8588944652556767233) (6 pp, sha256 `037d9b18da007d21`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/kcd3008a-datasheet.pdf)