# SI2101A-TP

**MCC Micro Commercial Components** · MOSFETs · SOT-323

SI2101A-TP from MCC Micro Commercial Components, in a SOT-323. 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; gate-source voltage is limited to ±10 V (VGS). |
| 2 | SOURCE | passive | Source terminal; continuous body diode current IS is rated -2 A. |
| 3 | DRAIN | passive | Drain terminal; drain-source voltage is rated -20 V with continuous drain current of -2 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC Micro Commercial Components |
| Package | SOT-323 |
| 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 |  |  | -20 | V |  | 1 |
| Gate-Source Voltage | VGS | -10 |  | 10 | V |  | 1 |
| Continuous Drain Current | ID |  |  | -2 | A |  | 1 |
| Pulsed Drain Current | IDM |  |  | -8 | A | Pulse width ≤300µs, duty cycle ≤2% | 1 |
| Total Power Dissipation | PD |  |  | 0.45 | W |  | 1 |
| Operating Junction Temperature Range |  | -55 |  | 150 | °C |  | 1 |
| Storage Temperature Range |  | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance Junction to Ambient |  |  | 278 |  | °C/W | Device mounted on FR-4 PCB, 1 inch x 0.85 inch x 0.062 inch | 1 |
| Drain-Source Breakdown Voltage | V(BR)DSS | -20 |  |  | V | VGS=0V, ID=-250µA | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±10V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | µA | VDS=-20V, VGS=0V | 2 |
| Gate-Threshold Voltage | VGS(th) | -0.4 | -0.62 | -1 | V | VDS=VGS, ID=-250µA | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 100 | 130 | mΩ | VGS=-4.5V, ID=-1.5A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 130 | 170 | mΩ | VGS=-2.5V, ID=-1.2A | 2 |
| Drain-Source On-Resistance | RDS(on) |  | 165 | 250 | mΩ | VGS=-1.8V, ID=-1.0A | 2 |
| Continuous Body Diode Current | IS |  |  | -2 | A |  | 2 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | VGS=0V, IS=-2A | 2 |

## CAD (KiCad official)

- Symbol: `SI2101A-TP`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `si2101a-tp-etched.step` / `si2101a-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `si2101a-tp.step` / `si2101a-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/8603065900136480768) (5 pp, sha256 `b5d2ef5713bacfce`, 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/si2101a-tp-datasheet.pdf)