# SSM3K347R

**TOSHIBA** · MOSFETs · SOT-23F

SSM3K347R from TOSHIBA, in a SOT-23F. 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 N-channel MOSFET, driven at 4.0 V to 10 V for the stated RDS(ON) ratings; the datasheet states a built-in 47 kΩ pull-down resistance (Rpd) on this device. |
| 2 | Source | passive | Source terminal of the N-channel MOSFET, serving as the reference for the gate-source voltage (VGSS rated ±20 V on the absolute maximum table). |
| 3 | Drain | passive | Drain terminal of the N-channel MOSFET, rated at a drain-source voltage VDS(DC) of 38 V on the absolute maximum table. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | SOT-23F |
| 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 clamp voltage | V(CL)DSS | 38 | 43 | 48 | V | ID = 1 mA, VGS = 0 V | 3 |
| Drain cut-off current | IDSS |  |  | 10 | µA | VDS = 24 V, VGS = 0 V | 3 |
| Gate threshold voltage | Vth | 1.4 |  | 2.4 | V | VDS = 10 V, ID = 1 mA | 3 |
| Drain-source on-resistance | RDS(ON) |  | 350 | 480 | mΩ | ID = 0.5 A, VGS = 4.0 V | 3 |
| Drain-source on-resistance | RDS(ON) |  | 340 | 410 | mΩ | ID = 1.0 A, VGS = 4.5 V | 3 |
| Drain-source on-resistance | RDS(ON) |  | 280 | 340 | mΩ | ID = 1.0 A, VGS = 10 V | 3 |
| Pull-down resistance | Rpd | 32.9 | 47 | 61.1 | kΩ |  | 3 |
| Diode forward voltage | VDSF |  | -0.87 | -1.2 | V | ID = -2 A, VGS = 0 V | 4 |
| Drain-source voltage (DC) | VDS(DC) |  |  | 38 | V |  | 2 |
| Gate-source voltage | VGSS | -20 |  | 20 | V |  | 2 |
| Single-pulse active clamp capability | EAS |  |  | 2.2 | mJ | VDD = 25 V, Tch = 25 °C (initial state) | 2 |
| Channel temperature | Tch |  |  | 150 | °C | Channel temperature must not exceed 150 °C (Note 1) | 2 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 2 |

## CAD (KiCad official)

- Symbol: `SSM3K347R`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23F (KiCad packages3D, STEP)
- 3D model files: `ssm3k347r-etched.step` / `ssm3k347r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ssm3k347r.step` / `ssm3k347r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8600778836993204224) (9 pp, sha256 `ce9146a3d6d307dc`, retrieved 2026-10-17, 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/ssm3k347r-datasheet.pdf)