# SI3400A-TP

**MCC Micro Commercial Components** · MOSFETs · SOT-23

SI3400A-TP from MCC Micro Commercial Components, in a SOT-23. 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 of the N-channel enhancement MOSFET, rated for a gate-source voltage VGS of ±12 V. |
| 2 | SOURCE | passive | Source of the N-channel enhancement MOSFET; the datasheet gives no separate pin-level electrical limit for this terminal. |
| 3 | DRAIN | passive | Drain of the N-channel enhancement MOSFET, rated for a drain-source voltage VDS of 30 V and a continuous drain current ID of 5.8 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC Micro Commercial Components |
| Package | SOT-23 |
| 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 voltage | VDS |  |  | 30 | V | Maximum Ratings @ 25℃ unless otherwise specified | 1 |
| Continuous drain current | ID |  |  | 5.8 | A | Maximum Ratings @ 25℃ unless otherwise specified | 1 |
| Pulsed drain current | IDM |  |  | 30 | A | Maximum Ratings @ 25℃ unless otherwise specified; repetitive rating, pulse width limited by maximum junction temperature (note 1) | 1 |
| Gate-source voltage | VGS | -12 |  | 12 | V | Maximum Ratings @ 25℃ unless otherwise specified; printed as ±12 V | 1 |
| Total power dissipation | PD |  |  | 0.4 | W | Maximum Ratings @ 25℃ unless otherwise specified | 1 |
| Operating junction temperature | TJ | -55 |  | 150 | ℃ | Maximum Ratings @ 25℃ unless otherwise specified; printed as -55 to +150 | 1 |
| Storage temperature | TSTG | -55 |  | 150 | ℃ | Maximum Ratings @ 25℃ unless otherwise specified; printed as -55 to +150 | 1 |
| Gate-source leakage current | IGSS | -100 |  | 100 | nA | VGS =±12V, VDS = 0V | 2 |
| Drain-source on-resistance | RDS(on) |  | 29 | 32 | mΩ | VGS =10V, ID =5.8A | 2 |
| Drain-source on-resistance | RDS(on) |  | 32 | 38 | mΩ | VGS =4.5V, ID =5A | 2 |
| Drain-source on-resistance | RDS(on) |  | 40 | 45 | mΩ | VGS =2.5V,ID=4A | 2 |
| Gate threshold voltage | VGS(th) |  | 0.7 | 1.4 | V | VDS =VGS, ID =250µA | 2 |
| Drain-source breakdown voltage | V(BR)DSS |  | 30 |  | V | VGS = 0V, ID =250µA | 2 |
| Zero gate voltage drain current | IDSS |  | 1 |  | µA | VDS =24V,VGS = 0V | 2 |
| Forward transconductance | gFS |  | 8 |  | S | VDS =5V, ID =5A | 2 |
| Input capacitance | Ciss |  | 1155 |  | pF | VDS =15V,VGS =0V,f =1MHz | 2 |
| Output capacitance | Coss |  | 108 |  | pF | VDS =15V,VGS =0V,f =1MHz | 2 |
| Reverse transfer capacitance | Crss |  | 84 |  | pF | VDS =15V,VGS =0V,f =1MHz | 2 |
| Gate resistance | Rg |  | 3.6 |  | Ω | VDS =0V,VGS =0V,f =1MHz | 2 |
| Turn-on delay time | td(on) |  | 5 |  | ns | VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω | 2 |
| Turn-on rise time | tr |  | 7 |  | ns | VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω | 2 |
| Turn-off delay time | td(off) |  | 40 |  | ns | VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω | 2 |
| Turn-off fall time | tf |  | 6 |  | ns | VGS=10V,VDS=15V, RL=2.7Ω,RGEN=3Ω | 2 |
| Diode forward voltage | VSD |  | 1 |  | V | IS=1A,VGS=0V | 2 |
| Thermal resistance junction to ambient | RθJA |  | 313 |  | ℃/W | Printed in maximum ratings table; no test conditions printed | 1 |

## CAD (KiCad official)

- Symbol: `SI3400A-TP`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `si3400a-tp-etched.step` / `si3400a-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `si3400a-tp.step` / `si3400a-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/8588901494972698624) (4 pp, sha256 `42cf0d521c78dd49`, retrieved 2026-10-09, 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/si3400a-tp-datasheet.pdf)