# SI3437DV

**TECH PUBLIC** · MOSFETs · SOT-23-6

SI3437DV from TECH PUBLIC, in a SOT-23-6. 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 | D | passive | Drain of the P-channel MOSFET, tied with pins 2, 5 and 6 (BVDSS -150V, continuous ID -0.85A at 25°C). |
| 2 | D | passive | Drain of the P-channel MOSFET, tied with pins 1, 5 and 6 (VDS max -150V). |
| 3 | G | input | Gate of the P-channel MOSFET with VGS limit of ±20V and threshold VGS(th) of -2V to -4V. |
| 4 | S | passive | Source of the P-channel MOSFET; body diode continuous forward current is -0.85A at 25°C. |
| 5 | D | passive | Drain of the P-channel MOSFET, tied with pins 1, 2 and 6 (pulsed drain current -3.4A). |
| 6 | D | passive | Drain of the P-channel MOSFET, tied with pins 1, 2 and 5 (RDS(ON) typ 0.8Ω at VGS=-10V, ID=-0.5A). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-6 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SI3437DV`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `si3437dv-etched.step` / `si3437dv-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `si3437dv.step` / `si3437dv.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590929170933633024) (6 pp, sha256 `06cb8cc5d4f04949`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/si3437dv-datasheet.pdf)