# SI2300A

**UMW** · MOSFETs · SOT-23

SI2300A from UMW, 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 | G | input | GATE: MOSFET gate terminal; gate-source voltage is rated at ±12 V (VGS) in the absolute maximum ratings. |
| 2 | S | passive | SOURCE: MOSFET source terminal; continuous source-drain (body diode) current is rated at 0.6 A (IS). |
| 3 | D | passive | DRAIN: MOSFET drain terminal; drain-source voltage is rated at 20 V (VDS) and continuous drain current at 6 A (ID). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| 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 breakdown voltage | V(BR)DSS | 20 |  |  | V | VGS=0V, ID=10µA | 2 |
| Gate-threshold voltage | VGS(th) | 0.4 |  | 1 | V | VDS=VGS, ID=50µA | 2 |
| Gate-body leakage | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±8V | 2 |
| Zero gate voltage drain current | IDSS |  |  | 1 | µA | VDS=20V, VGS=0V | 2 |
| Drain-source on-state resistance (VGS=4.5V) | RDS(ON) |  | 21 | 25 | mΩ | VGS=4.5V, ID=6A | 2 |
| Drain-source on-state resistance (VGS=2.5V) | RDS(ON) |  | 28 | 34 | mΩ | VGS=2.5V, ID=5.2A | 2 |
| Diode forward voltage | VSD |  | 0.74 | 1.2 | V | IS=0.94A, VGS=0V | 2 |
| Drain-Source Voltage | VDS |  |  | 20 | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID |  |  | 6 | A |  | 1 |
| Continuous Source-Drain Current (Diode Conduction) | IS |  |  | 0.6 | A |  | 1 |
| Power Dissipation | PD |  |  | 1.25 | W |  | 1 |
| Operating Junction Temperature | TJ |  |  | 150 | °C |  | 1 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 1 |
| Thermal Resistance from Junction to Ambient | RθJA |  |  | 312.5 | °C/W | t≤5s | 1 |

## CAD (KiCad official)

- Symbol: `SI2300A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `si2300a-etched.step` / `si2300a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `si2300a.step` / `si2300a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755881110314332160) (7 pp, sha256 `2cbd35dcd36281a5`, 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/si2300a-datasheet.pdf)