# SI2129DW-TP

**MCC Micro Commercial Components** · MOSFETs · SOT-363

SI2129DW-TP from MCC Micro Commercial Components, in a SOT-363. 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 | S1 | passive | Source of channel 1 of the dual P-channel MOSFET; the datasheet rates the device at VDS = -20 V and continuous ID = -1 A with pulsed IDM = -4 A. |
| 2 | G1 | input | Gate of channel 1, rated for VGS of ±10 V with gate threshold VGS(th) between -0.4 V and -1 V at ID = -250 µA. |
| 3 | D2 | passive | Drain of channel 2, rated for drain-source voltage VDS = -20 V and continuous drain current ID = -1 A. |
| 4 | S2 | passive | Source of channel 2 of the dual P-channel MOSFET; the body diode forward voltage VSD is -1.2 V maximum at IS = -1 A. |
| 5 | G2 | input | Gate of channel 2, rated for VGS of ±10 V with gate threshold VGS(th) between -0.4 V and -1 V at ID = -250 µA. |
| 6 | D1 | passive | Drain of channel 1, rated for drain-source voltage VDS = -20 V and continuous drain current ID = -1 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC Micro Commercial Components |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SI2129DW-TP`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `si2129dw-tp-etched.step` / `si2129dw-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `si2129dw-tp.step` / `si2129dw-tp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MCC Micro Commercial Components datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602793800079192064) (5 pp, sha256 `8dd5cbcf67a7e7ec`, retrieved 2026-10-10, 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/si2129dw-tp-datasheet.pdf)